
Mastic
- County:
- Suffolk County
- County Seat:
- No
- Area (mi²):
- 3.861
- State:
- New York
Mastic is a CDP located in Suffolk County, New York. Mastic has a 2025 population of 14,840. Mastic is currently declining at a rate of -0.28% annually and its population has decreased by -1.51% since the most recent census, which recorded a population of 15,068 in 2020.
The average household income in Mastic is $134,465 with a poverty rate of 7%. The median age in Mastic is 31.9 years: 31 years for males, and 32.4 years for females.