1967 SPECIAL REPORT: "HARLEM SUMMER YOUTH PROGRAM"

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.[6] The period between 1910 and 1930 marks a huge point in the great migration of African Americans from the South to New York. This point also marks 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.