
Mamaroneck
- County:
- Westchester County
- County Seat:
- No
- Area (mi²):
- 3.209
- State:
- New York
Mamaroneck is a village located in Westchester County, New York. Mamaroneck has a 2025 population of 19,171. Mamaroneck is currently declining at a rate of -0.94% annually and its population has decreased by -4.5% since the most recent census, which recorded a population of 20,075 in 2020.
The average household income in Mamaroneck is $184,151 with a poverty rate of 7.71%. The median age in Mamaroneck is 40.7 years: 40.2 years for males, and 42.1 years for females.