The percentage of adults in Central Islip who are college-educated is close to the national average for all communities of 21.84%: 18.61% of the adults in Central Islip have a bachelor's degree or advanced degree.
The per capita income in Central Islip in 2022 was $33,138, which is lower middle income relative to New York, and middle income relative to the rest of the US. This equates to an annual income of $132,552 for a family of four. However, Central Islip contains both very wealthy and poor people as well.
Central Islip is an extremely ethnically-diverse town. The people who call Central Islip home describe themselves as belonging to a variety of racial and ethnic groups. People of Hispanic or Latino origin are the most prevalent group in Central Islip, accounting for 59.64% of the town’s residents (people of Hispanic or Latino origin can be of any race). The greatest number of Central Islip residents report their race to be Black or African-American, followed by White. Important ancestries of people in Central Islip include Italian, Irish, German, Haitian, and Jamaican.
Foreign born people are also an important part of Central Islip's cultural character, accounting for 35.03% of the town’s population.
The most common language spoken in Central Islip is Spanish. Other important languages spoken here include English and French Creole.
