Neighborhood in Manhattan, New York City
Top 10 Harlem related articles
- 1 Geography
- 2 History
- 3 Culture
- 4 Demographics
- 5 Police and crime
- 6 Fire safety
- 7 Health
- 8 Post offices and ZIP Codes
- 9 Education
- 10 Transportation
- 11 See also
- 12 References
- 13 Further reading
- 14 External links
Apartment buildings next to Morningside Park
Location in New York City
|City||New York City|
|Community District||Manhattan 10|
|Founded by||Peter Stuyvesant|
|Named for||Haarlem, Netherlands|
|• Total||1.400 sq mi (3.63 km2)|
|• Density||83,000/sq mi (32,000/km2)|
|• Median income||$29,059|
|Time zone||UTC−5 (Eastern)|
|• Summer (DST)||UTC−4 (EDT)|
10026, 10027, 10030, 10037, 10039
|Area code||212, 332, 646, and 917|
Harlem is a neighborhood in Upper Manhattan, New York City. It is bounded roughly by Frederick Douglass Boulevard, St. Nicholas Avenue, and Morningside Park on the west; the Harlem River and 155th Street on the north; Fifth Avenue on the east; and Central Park North on the south. The greater Harlem area encompasses several other neighborhoods and extends west to the Hudson River, north to 155th Street, east to the East River, and south to Martin Luther King, Jr., Boulevard, Central Park, and East 96th Street.
Originally a Dutch village, formally organized in 1658, it is named after the city of Haarlem in the Netherlands. Harlem's history has been defined by a series of economic boom-and-bust cycles, with significant population shifts accompanying each cycle. Harlem was predominantly occupied by Jewish and Italian Americans in the 19th century, but African-American residents began to arrive in large numbers during the Great Migration in the 20th century. In the 1920s and 1930s, Central and West Harlem were the center of the Harlem Renaissance, a major African-American cultural movement. With job losses during the Great Depression of the 1930s and the deindustrialization of New York City after World War II, rates of crime and poverty increased significantly. In the 21st century, crime rates decreased significantly, and Harlem started to gentrify.
Central Harlem is part of Manhattan Community District 10. It is patrolled by the 28th and 32nd Precincts of the New York City Police Department. The greater Harlem area also includes Manhattan Community Districts 9 and 11, and several additional police precincts. Fire services are provided by four New York City Fire Department companies. Politically, Harlem is represented by the New York City Council's 7th, 8th, and 9th districts. The area is served by the New York City Subway and local bus routes. It contains several public elementary, middle, and high schools, and is close to several colleges including Columbia University and the City College of New York.
Harlem Intro articles: 26
Harlem is located in Upper Manhattan, often referred to as "Uptown" by locals. The three neighborhoods comprising the greater Harlem area—West, Central, and East Harlem—stretch from the Harlem River and East River to the east, to the Hudson River to the west; and between 155th Street in the north, where it meets Washington Heights, and an uneven boundary along the south that runs along 96th Street east of Fifth Avenue, 110th Street between Fifth Avenue to Morningside Park, and 125th Street west of Morningside Park to the Hudson River. Encyclopædia Britannica references these boundaries, though the Encyclopedia of New York City takes a much more conservative view of Harlem's boundaries, regarding only central Harlem as part of Harlem proper.:573
Central Harlem is the name of Harlem proper; it falls under Manhattan Community District 10. This section is bounded by Fifth Avenue on the east; Central Park on the south; Morningside Park, St. Nicholas Avenue and Edgecombe Avenue on the west; and the Harlem River on the north. A chain of three large linear parks—Morningside Park, St. Nicholas Park and Jackie Robinson Park—situated on steeply rising banks, form most of the district's western boundary. Fifth Avenue, as well as Marcus Garvey Park (also known as Mount Morris Park), separate this area from East Harlem to the east. Central Harlem includes the Mount Morris Park Historic District.
West Harlem (Manhattanville and Hamilton Heights) comprises Manhattan Community District 9 and does not form part of Harlem proper. The two neighborhoods' area is bounded by Cathedral Parkway/110th Street on the south; 155th Street on the north; Manhattan/Morningside Ave/St. Nicholas/Bradhurst/Edgecombe Avenues on the east; and Riverside Park/the Hudson River on the west. Manhattanville begins at roughly 123rd Street and extends northward to 135th Street. The northernmost section of West Harlem is Hamilton Heights.
East Harlem, also called Spanish Harlem or El Barrio, is located within Manhattan Community District 11, which is bounded by East 96th Street on the south, East 138th Street on the north, Fifth Avenue on the west, and the Harlem River on the east. It is not part of Harlem proper.
In the 2010s some real estate professionals started rebranding south Harlem and Morningside Heights as "SoHa" (a name standing for "South Harlem" in the style of SoHo or NoHo) in an attempt to accelerate gentrification of the neighborhoods. "SoHa", applied to the area between West 110th and 125th Streets, has become a controversial name. Residents and other critics seeking to prevent this renaming of the area have labelled the SoHa brand as "insulting and another sign of gentrification run amok" and have said that "the rebranding not only places their neighborhood's rich history under erasure but also appears to be intent on attracting new tenants, including students from nearby Columbia University".
Multiple New York City politicians have initiated legislative efforts to curtail this practice of neighborhood rebranding, which when successfully introduced in other New York City neighborhoods, have led to increases in rents and real estate values, as well as "shifting demographics". In 2011, U.S. Representative Hakeem Jeffries attempted but failed to implement legislation "that would punish real estate agents for inventing false neighborhoods and redrawing neighborhood boundaries without city approval." By 2017, New York State Senator Brian Benjamin also worked to render illegal the practice of rebranding historically recognized neighborhoods.
Politically, central Harlem is in New York's 13th congressional district. It is in the New York State Senate's 30th district, the New York State Assembly's 68th and 70th districts, and the New York City Council's 7th, 8th, and 9th districts.
Harlem Geography articles: 22
Before the arrival of European settlers, the area that would become Harlem (originally Haarlem) was inhabited by the Manhattans, a native tribe, who along with other Native Americans, most likely Lenape, occupied the area on a semi-nomadic basis. As many as several hundred farmed the Harlem flatlands. Between 1637 and 1639, a few settlements were established. The settlement of Harlem was formally incorporated in 1660 under the leadership of Peter Stuyvesant. During the American Revolution, the British burned Harlem to the ground. It took a long time to rebuild, as Harlem grew more slowly than the rest of Manhattan during the late 18th century. After the American Civil War, Harlem experienced an economic boom starting in 1868. The neighborhood continued to serve as a refuge for New Yorkers, but increasingly those coming north were poor and Jewish or Italian. The New York and Harlem Railroad, as well as the Interborough Rapid Transit and elevated railway lines, helped Harlem's economic growth, as they connected Harlem to lower and midtown Manhattan.
The Jewish and Italian demographic decreased, while the black and Puerto Rican population increased in this time. The early-20th century Great Migration of black people to northern industrial cities was fueled by their desire to leave behind the Jim Crow South, seek better jobs and education for their children, and escape a culture of lynching violence; during World War I, expanding industries recruited black laborers to fill new jobs, thinly staffed after the draft began to take young men. In 1910, Central Harlem population was about 10% black people. By 1930, it had reached 70%. Starting around the time of the end of World War I, Harlem became associated with the New Negro movement, and then the artistic outpouring known as the Harlem Renaissance, which extended to poetry, novels, theater, and the visual arts. So many black people came that it "threaten[ed] the very existence of some of the leading industries of Georgia, Florida, Tennessee and Alabama." Many settled in Harlem. By 1920, central Harlem was 32.43% black. The 1930 census revealed that 70.18% of central Harlem's residents were black and lived as far south as Central Park, at 110th Street.
However, by the 1930s, the neighborhood was hit hard by job losses in the Great Depression. In the early 1930s, 25% of Harlemites were out of work, and employment prospects for Harlemites stayed bad for decades. Employment among black New Yorkers fell as some traditionally black businesses, including domestic service and some types of manual labor, were taken over by other ethnic groups. Major industries left New York City altogether, especially after 1950. Several riots happened in this period, including in 1935 and 1943.
There were major changes following World War II. In the late 1950s and early 1960s, Harlem was the scene of a series of rent strikes by neighborhood tenants, led by local activist Jesse Gray, together with the Congress of Racial Equality, Harlem Youth Opportunities Unlimited (HARYOU), and other groups. These groups wanted the city to force landlords to improve the quality of housing by bringing them up to code, to take action against rats and roaches, to provide heat during the winter, and to keep prices in line with existing rent control regulations. The largest public works projects in Harlem in these years were public housing, with the largest concentration built in East Harlem. Typically, existing structures were torn down and replaced with city-designed and managed properties that would, in theory, present a safer and more pleasant environment than those available from private landlords. Ultimately, community objections halted the construction of new projects. From the mid-20th century, the low quality of education in Harlem has been a source of distress. In the 1960s, about 75% of Harlem students tested under grade levels in reading skills, and 80% tested under grade level in math. In 1964, residents of Harlem staged two school boycotts to call attention to the problem. In central Harlem, 92% of students stayed home. In the post-World War II era, Harlem ceased to be home to a majority of the city's black people, but it remained the cultural and political capital of black New York, and possibly black America.
By the 1970s, many of those Harlemites who were able to escape from poverty left the neighborhood in search of better schools and homes, and safer streets. Those who remained were the poorest and least skilled, with the fewest opportunities for success. Though the federal government's Model Cities Program spent $100 million on job training, health care, education, public safety, sanitation, housing, and other projects over a ten-year period, Harlem showed no improvement. The city began auctioning its enormous portfolio of Harlem properties to the public in 1985. This was intended to improve the community by placing property in the hands of people who would live in them and maintain them. In many cases, the city would even pay to completely renovate a property before selling it (by lottery) below market value.
After the 1990s, Harlem began to grow again. Between 1990 and 2006 the neighborhood's population grew by 16.9%, with the percentage of black people decreasing from 87.6% to 69.3%, then dropping to 54.4% by 2010, and the percentage of whites increasing from 1.5% to 6.6% by 2006, and to "almost 10%" by 2010. A renovation of 125th Street and new properties along the thoroughfare also helped to revitalize Harlem.
Harlem History articles: 22
In the 1920s and 1930s, Central and West Harlem was the focus of the "Harlem Renaissance", an outpouring of artistic work without precedent in the American Black community. Though Harlem musicians and writers are particularly well remembered, the community has also hosted numerous actors and theater companies, including the New Heritage Repertory Theater, National Black Theater, Lafayette Players, Harlem Suitcase Theater, The Negro Playwrights, American Negro Theater, and the Rose McClendon Players.
The Apollo Theater opened on 125th Street on January 26, 1934, in a former burlesque house. The Savoy Ballroom, on Lenox Avenue, was a renowned venue for swing dancing, and was immortalized in a popular song of the era, "Stompin' At The Savoy". In the 1920s and 1930s, between Lenox and Seventh Avenues in central Harlem, over 125 entertainment venues were in operation, including speakeasies, cellars, lounges, cafes, taverns, supper clubs, rib joints, theaters, dance halls, and bars and grills. 133rd Street, known as "Swing Street", became known for its cabarets, speakeasies and jazz scene during the Prohibition era, and was dubbed "Jungle Alley" because of "inter-racial mingling" on the street. Some jazz venues, including the Cotton Club, where Duke Ellington played, and Connie's Inn, were restricted to whites only. Others were integrated, including the Renaissance Ballroom and the Savoy Ballroom.
In 1936, Orson Welles produced his black Macbeth at the Lafayette Theater in Harlem. Grand theaters from the late 19th and early 20th centuries were torn down or converted to churches. Harlem lacked any permanent performance space until the creation of the Gatehouse Theater in an old Croton aqueduct building on 135th Street in 2006.
From 1965 until 2007, the community was home to the Harlem Boys Choir, a touring choir and education program for young boys, most of whom are black. The Girls Choir of Harlem was founded in 1989, and closed with the Boys Choir.
Harlem is also home to the largest African American Day Parade, which celebrates the culture of African diaspora in America. The parade was started up in the spring of 1969 with Congressman Adam Clayton Powell, Jr. as the Grand Marshal of the first celebration.
Arthur Mitchell, a former dancer with the New York City Ballet, established Dance Theatre of Harlem as a school and company of classical ballet and theater training in the late 1960s. The company has toured nationally and internationally. Generations of theater artists have gotten a start at the school.
By the 2010s, new dining hotspots were opening in Harlem around Frederick Douglass Boulevard. At the same time, some residents fought back against the powerful waves of gentrification the neighborhood is experiencing. In 2013, residents staged a sidewalk sit-in to protest a five-days-a-week farmers market that would shut down Macombs Place at 150th Street.
Many R&B/Soul groups and artists formed in Harlem. The Main Ingredient, Frankie Lymon & The Teenagers, Black Ivory, Cameo, Keith Sweat, Freddie Jackson, Alyson Williams, Johnny Kemp, Teddy Riley and others got their start in Harlem.
Manhattan's contributions to hip-hop stems largely from artists with Harlem roots such as Doug E. Fresh, Big L, Kurtis Blow, The Diplomats, Mase or Immortal Technique. Harlem is also the birthplace of popular hip-hop dances such as the Harlem shake, toe wop, and Chicken Noodle Soup.
In the 1920s, African American pianists who lived in Harlem invented their own style of jazz piano, called stride, which was heavily influenced by ragtime. This style played a very important role in early jazz piano
Religious life has historically had a strong presence in Black Harlem. The area is home to over 400 churches, some of which are official city or national landmarks. Major Christian denominations include Baptists, Pentecostals, Methodists (generally African Methodist Episcopalian, or "AME"), Episcopalians, and Roman Catholic. The Abyssinian Baptist Church has long been influential because of its large congregation. The Church of Jesus Christ of Latter-day Saints built a chapel on 128th Street in 2005.
Many of the area's churches are "storefront churches", which operate in an empty store, or a basement, or a converted brownstone townhouse. These congregations may have fewer than 30–50 members each, but there are hundreds of them. Others are old, large, and designated landmarks. Especially in the years before World War II, Harlem produced popular Christian charismatic "cult" leaders, including George Wilson Becton and Father Divine. Mosques in Harlem include the Masjid Malcolm Shabazz (formerly Mosque No. 7 Nation of Islam, and the location of the 1972 Harlem mosque incident), the Mosque of Islamic Brotherhood and Masjid Aqsa. Judaism, too, maintains a presence in Harlem through the Old Broadway Synagogue. A non-mainstream synagogue of Black Hebrews, known as Commandment Keepers, was based in a synagogue at 1 West 123rd Street until 2008.
Officially designated landmarks
- 12 West 129th Street, a New York City landmark
- 17 East 128th Street, a New York City landmark
- 369th Regiment Armory, a New York City landmark and NRHP-listed site
- Abyssinian Baptist Church, a New York City landmark
- Apollo Theater, a New York City landmark and NRHP-listed site
- Astor Row, a set of New York City landmark houses:207
- Blockhouse No. 1, Fort Clinton, and Nutter's Battery, part of Central Park, a New York City scenic landmark and NRHP-listed site
- Central Harlem West–130–132nd Streets Historic District, a New York City landmark
- Dunbar Apartments, a New York City landmark
- Graham Court Apartments, a New York City landmark
- Hamilton Grange, a New York City landmark and NRHP-listed site
- Harlem River Houses, a New York City landmark
- Harlem YMCA, a New York City landmark
- Hotel Theresa, a New York City landmark
- Jackie Robinson YMCA Youth Center, a New York City landmark
- Langston Hughes House, a New York City landmark and NRHP-listed site
- Macombs Dam Bridge and 155th Street Viaduct, a New York City landmark
- Manhattan Avenue-West 120th-123rd Streets Historic District, a NRHP historic district
- Metropolitan Baptist Church, a New York City landmark and NRHP-listed site
- Minton's Playhouse, a NRHP-listed site
- Morningside Park, a New York City scenic landmark
- Mother African Methodist Episcopal Zion Church, a New York City landmark
- Mount Morris Park Historic District, a New York City landmark district
- Mount Olive Fire Baptized Holiness Church, a New York City landmark
- New York Public Library 115th Street Branch, a New York City landmark and NRHP-listed site
- Regent Theatre, a New York City landmark
- Schomburg Collection for Research in Black Culture, a New York City landmark and NRHP-listed site
- St. Aloysius Roman Catholic Church, a New York City landmark
- St. Andrew's Church, a New York City landmark and NRHP-listed site
- St. Philip's Protestant Episcopal Church, a New York City landmark
- St. Martin's Episcopal Church (formerly Trinity Church), a New York City landmark
- St. Nicholas Historic District, a New York City landmark district
- St. Paul's German Evangelical Lutheran Church, a New York City landmark
- Wadleigh High School for Girls, a New York City landmark
- Washington Apartments, a New York City landmark
Other points of interest
Other prominent points of interest include:
- Adam Clayton Powell Jr. State Office Building
- All Saints Church
- ATLAH World Missionary Church
- Bushman Steps, stairway that led baseball fans from the subway to The Polo Grounds ticket booth.
- Cotton Club
- Duke Ellington Circle
- Frederick Douglass Circle
- Harbor Conservatory for the Performing Arts
- Harlem Children's Zone
- Harlem Hospital Center
- The Harlem School of the Arts
- Lenox Lounge
- Marcus Garvey Park
- Morningside Park
- National Black Theatre
- New York College of Podiatric Medicine
- Red Rooster
- Rucker Park
- Savoy Ballroom
- St. Nicholas Houses
- Studio Museum in Harlem
- Sylvia's Soul Food
- Touro College of Osteopathic Medicine
- New York Amsterdam News
Harlem Culture articles: 111
The demographics of Harlem's communities have changed throughout its history. In 1910, 10% of Harlem's population was black but by 1930, they had become a 70% majority. The period between 1910 and 1930 marked a huge point in the great migration of African Americans from the South to New York. It also marked an influx from downtown Manhattan neighborhoods where blacks were feeling less welcome, to the Harlem area. The black population in Harlem peaked in 1950, with a 98% share of the population (population 233,000). As of 2000, central Harlem's black population comprised 77% of the total population of that area; however, the black population is declining as many African Americans move out and more immigrants move in.
Harlem suffers from unemployment rates generally more than twice the citywide average, as well as high poverty rates. and the numbers for men have been consistently worse than the numbers for women. Private and governmental initiatives to ameliorate unemployment and poverty have not been successful. During the Great Depression, unemployment in Harlem went past 20% and people were being evicted from their homes. At the same time, the federal government developed and instituted the redlining policy. This policy rated neighborhoods, such as Central Harlem, as unappealing based on the race, ethnicity, and national origins of the residents. Central Harlem was deemed 'hazardous' and residents living in Central Harlem were refused home loans or other investments. Comparably, wealthy and white residents in New York City neighborhoods were approved more often for housing loans and investment applications. Overall, they were given preferential treatment by city and state institutions.
In the 1960s, uneducated blacks could find jobs more easily than educated ones could, confounding efforts to improve the lives of people who lived in the neighborhood through education. Land owners took advantage of the neighborhood and offered apartments to the lower-class families for cheaper rent but in lower-class conditions. By 1999 there were 179,000 housing units available in Harlem. Housing activists in Harlem state that, even after residents were given vouchers for the Section 8 housing that was being placed, many were not able to live there and had to find homes elsewhere or become homeless. These policies are examples of societal racism, also known as structural racism. As public health leaders have named structural racism as a key social determinant of health disparities between racial and ethnic minorities, these 20th century policies have contributed to the current population health disparities between Central Harlem and other New York City neighborhoods.
For census purposes, the New York City government classifies Central Harlem into two neighborhood tabulation areas: Central Harlem North and Central Harlem South, divided by 126th street. Based on data from the 2010 United States Census, the population of Central Harlem was 118,665, a change of 9,574 (8.1%) from the 109,091 counted in 2000. Covering an area of 926.05 acres (374.76 ha), the neighborhood had a population density of 128.1 inhabitants per acre (82,000/sq mi; 31,700/km2). The racial makeup of the neighborhood was 9.5% (11,322) White, 63% (74,735) African American, 0.3% (367) Native American, 2.4% (2,839) Asian, 0% (46) Pacific Islander, 0.3% (372) from other races, and 2.2% (2,651) from two or more races. Hispanic or Latino of any race were 22.2% (26,333) of the population. Harlem's Black population was more concentrated in Central Harlem North, and its White population more concentrated in Central Harlem South, while the Hispanic / Latino population was evenly split.
The most significant shifts in the racial composition of Central Harlem between 2000 and 2010 were the White population's increase by 402% (9,067), the Hispanic / Latino population's increase by 43% (7,982), and the Black population's decrease by 11% (9,544). While the growth of the Hispanic / Latino was predominantly in Central Harlem North, the decrease in the Black population was slightly greater in Central Harlem South, and the drastic increase in the White population was split evenly across the two census tabulation areas. Meanwhile, the Asian population grew by 211% (1,927) but remained a small minority, and the small population of all other races increased by 4% (142).
The entirety of Community District 10, which comprises Central Harlem, had 116,345 inhabitants as of NYC Health's 2018 Community Health Profile, with an average life expectancy of 76.2 years.:2, 20 This is lower than the median life expectancy of 81.2 for all New York City neighborhoods.:53 (PDF p. 84) Most inhabitants are children and middle-aged adults: 21% are between the ages of 0–17, while 35% are between 25–44, and 24% between 45–64. The ratio of college-aged and elderly residents was lower, at 10% and 11% respectively.:2
As of 2017, the median household income in Community District 10 was $49,059. In 2018, an estimated 21% of Community District 10 residents lived in poverty, compared to 14% in all of Manhattan and 20% in all of New York City. Around 12% of residents were unemployed, compared to 7% in Manhattan and 9% in New York City. Rent burden, or the percentage of residents who have difficulty paying their rent, is 48% in Community District 10, compared to the boroughwide and citywide rates of 45% and 51% respectively. Based on this calculation, as of 2018[update], Community District 10 is considered to be gentrifying: according to the Community Health Profile, the district was low-income in 1990 and has seen above-median rent growth up to 2010.:7
In 2010, the population of West Harlem was 110,193. West Harlem, consisting of Manhattanville and Hamilton Heights, is predominately Hispanic / Latino, while African Americans make up about a quarter of the West Harlem population.
In 2010, the population of East Harlem was 120,000. East Harlem originally formed as a predominantly Italian American neighborhood. The area began its transition from Italian Harlem to Spanish Harlem when Puerto Rican migration began after World War II, though in recent decades, many Dominican, Mexican and Salvadorean immigrants have also settled in East Harlem. East Harlem is now predominantly Hispanic / Latino, with a significant African-American presence.
Harlem Demographics articles: 23
Police and crime
Central Harlem is patrolled by two precincts of the New York City Police Department (NYPD). Central Harlem North is covered by the 32nd Precinct, located at 250 West 135th Street, while Central Harlem South is patrolled by the 28th Precinct, located at 2271–2289 Eighth Avenue.
The 28th Precinct has a lower crime rate than it did in the 1990s, with crimes across all categories having decreased by 76.0% between 1990 and 2019. The precinct reported 5 murders, 11 rapes, 163 robberies, 235 felony assaults, 90 burglaries, 348 grand larcenies, and 28 grand larcenies auto in 2019. Of the five major violent felonies (murder, rape, felony assault, robbery, and burglary), the 28th Precinct had a rate of 1,125 crimes per 100,000 residents in 2019, compared to the boroughwide average of 632 crimes per 100,000 and the citywide average of 572 crimes per 100,000.
The crime rate in the 32nd Precinct has also decreased since the 1990s, with crimes across all categories having decreased by 75.7% between 1990 and 2019. The precinct reported 10 murders, 25 rapes, 219 robberies, 375 felony assaults, 110 burglaries, 315 grand larcenies, and 34 grand larcenies auto in 2019. Of the five major violent felonies (murder, rape, felony assault, robbery, and burglary), the 32nd Precinct had a rate of 1,042 crimes per 100,000 residents in 2019, compared to the boroughwide average of 632 crimes per 100,000 and the citywide average of 572 crimes per 100,000.
As of 2018[update], Community District 10 has a non-fatal assault hospitalization rate of 116 per 100,000 people, compared to the boroughwide rate of 49 per 100,000 and the citywide rate of 59 per 100,000. Its incarceration rate is 1,347 per 100,000 people, the second-highest in the city, compared to the boroughwide rate of 407 per 100,000 and the citywide rate of 425 per 100,000.:8
In 2019, the highest concentration of both felony assaults in Central Harlem was around the intersection of 125th Street and Malcolm X Boulevard, where there were 25 felony assaults and 18 robberies. The Harlem River Drive by the Ralph J. Rangel Houses was also a hotspot, with 23 felony assaults and 10 robberies.
In the early 20th century, Harlem was a stronghold of the Sicilian Mafia, other Italian organized crime groups, and later the Italian-American Mafia. As the ethnic composition of the neighborhood changed, black criminals began to organize themselves similarly. However, rather than compete with the established mobs, gangs concentrated on the "policy racket", also called the numbers game, or bolita in East Harlem. This was a gambling scheme similar to a lottery that could be played, illegally, from countless locations around Harlem. According to Francis Ianni, "By 1925 there were thirty black policy banks in Harlem, several of them large enough to collect bets in an area of twenty city blocks and across three or four avenues."
By the early 1950s, the total money at play amounted to billions of dollars, and the police force had been thoroughly corrupted by bribes from numbers bosses. These bosses became financial powerhouses, providing capital for loans for those who could not qualify for them from traditional financial institutions, and investing in legitimate businesses and real estate. One of the powerful early numbers bosses was a woman, Madame Stephanie St. Clair, who fought gun battles with mobster Dutch Schultz over control of the lucrative trade.
The popularity of playing the numbers waned with the introduction of the state lottery, which is legal but has lower payouts and has taxes collected on winnings. The practice continues on a smaller scale among those who prefer the numbers tradition or who prefer to trust their local numbers bank to the state.
Statistics from 1940 show about 100 murders per year in Harlem, "but rape is very rare". By 1950, many whites had left Harlem and by 1960, much of the black middle class had departed. At the same time, control of organized crime shifted from Italian syndicates to local black, Puerto Rican, and Cuban groups that were somewhat less formally organized. At the time of the 1964 riots, the drug addiction rate in Harlem was ten times higher than the New York City average, and twelve times higher than the United States as a whole. Of the 30,000 drug addicts then estimated to live in New York City, 15,000 to 20,000 lived in Harlem. Property crime was pervasive, and the murder rate was six times higher than New York's average. Half of the children in Harlem grew up with one parent, or none, and lack of supervision contributed to juvenile delinquency; between 1953 and 1962, the crime rate among young people increased throughout New York City, but was consistently 50% higher in Harlem than in New York City as a whole.
Injecting heroin grew in popularity in Harlem through the 1950s and 1960s, though the use of this drug then leveled off. In the 1980s, use of crack cocaine became widespread, which produced collateral crime as addicts stole to finance their purchasing of additional drugs, and as dealers fought for the right to sell in particular regions, or over deals gone bad.
With the end of the "crack wars" in the mid-1990s, and with the initiation of aggressive policing under mayors David Dinkins and his successor Rudy Giuliani, crime in Harlem plummeted. Compared to in 1981, when 6,500 robberies were reported in Harlem, reports of robberies dropped to 4,800 in 1990; to 1,700 in 2000; and to 1,100 in 2010. Within the 28th and 32nd precincts, there have been similar changes in all categories of crimes tracked by the NYPD.
There are many gangs in Harlem, often based in housing projects; when one gang member is killed by another gang, revenge violence erupts which can last for years. In addition, the East Harlem Purple Gang of the 1970s, which operated in East Harlem and surroundings, was an Italian American group of hitmen and heroin dealers.
Harlem and its gangsters have a strong link to hip hop, rap and R&B culture in the United States, and many successful rappers in the music industry came from gangs in Harlem. Gangster rap, which has its origins in the late 1980s, often has lyrics that are "misogynistic or that glamorize violence", glamorizing guns, drugs and easy women in Harlem and New York City.