8.96% of the population for whom poverty status is determined in Central Islip Union Free School District, NY (3.71k out of 41.4k people) live below the poverty line, a number that is lower than the national average of 12.5%. The largest demographic living in poverty are Females 55 - 64, followed by Males 25 - 34 and then Females 18 - 24.

The most common racial or ethnic group living below the poverty line in Central Islip Union Free School District, NY is Hispanic, followed by Other and White.

The Census Bureau uses a set of money income thresholds that vary by family size and composition to determine who classifies as impoverished. If a family's total income is less than the family's threshold than that family and every individual in it is considered to be living in poverty.