
Rensselaer
- County:
- Rensselaer County
- County Seat:
- No
- Area (mi²):
- 3.179
- State:
- New York
Rensselaer is a city located in Rensselaer County, New York. Rensselaer has a 2025 population of 9,375. Rensselaer is currently growing at a rate of 0.35% annually and its population has increased by 1.77% since the most recent census, which recorded a population of 9,212 in 2020.
The average household income in Rensselaer is $76,721 with a poverty rate of 19.58%. The median age in Rensselaer is 38.9 years: 37.1 years for males, and 39.6 years for females.