In 1712, enslaved Black and Indigenous people constituted approximately 18% of New York City's population.
This demographic reality fueled the 1712 New York Slave Revolt (April 6), where 20+ enslaved Africans set fire to a building, killed 9 whites, injured 6. Brutal suppression followed: 21 executed (burned, broken on wheel, hanged), 6 suicides, dozens transported. Laws tightened further (1713).
By 1741, enslaved population reached ~20%—precipitating the "Great Negro Plot" hysteria.
NYC was the largest urban enslaved population in the North throughout the colonial era.