
Brunswick
- County:
- Rensselaer County
- County Seat:
- No
- Area (mi²):
- 44.353
- State:
- New York
Brunswick is located in Rensselaer County, New York. Brunswick has a 2025 population of 12,403. Brunswick is currently declining at a rate of -0.13% annually and its population has decreased by -1.41% since the most recent census, which recorded a population of 12,580 in 2020.
The average household income in Brunswick is $123,049 with a poverty rate of 2.31%. The median age in Brunswick is 44.8 years: 43.4 years for males, and 47 years for females.