
Fairmount
- County:
- Onondaga County
- County Seat:
- No
- Area (mi²):
- 3.365
- State:
- New York
Fairmount is a CDP located in Onondaga County, New York. Fairmount has a 2025 population of 9,916. Fairmount is currently declining at a rate of -0.21% annually but its population has increased by 1.01% since the most recent census, which recorded a population of 9,817 in 2020.
The average household income in Fairmount is $98,039 with a poverty rate of 7.33%. The median age in Fairmount is 40.7 years: 38.2 years for males, and 42.6 years for females.