Cities, Towns, Neighborhoods & Other Populated Places in Rensselaer County.
| City Name | Title | County | Population |
|---|---|---|---|
| Troy | County seat of Rensselaer County, New York, United States | 49,154 | |
| East Greenbush | Town in New York state | 16,221 | |
| Stony Point | Town in Rockland County, New York, United States | 15,313 | |
| Brunswick | Town in New York | 13,046 | |
| Rensselaer | City in Indiana | 9,171 | |
| Sand Lake | Town in Rensselaer County, New York, United States | 8,425 | |
| Hoosick | Town in New York, United States | 6,728 | |
| Pittstown | Town in New York | 5,563 | |
| Poestenkill | Town in New York, USA | 4,499 | |
| Hoosick Falls | Town | 3,347 | |
| Stephentown | City in Rensselaer County, New York, United States of America | 2,868 | |
| Grafton | Town in New York, United States | 2,156 | |
| Berlin | Town in New York | 1,803 | |
| Castleton-on-Hudson | City in Rensselaer County, New York, United States of America | 1,462 | |
| Nassau | Town in Rensselaer County, New York, United States | 1,098 | |
| Schaghticoke | Village in New York, USA | 576 | |
| East Nassau | Village in the Town of Nassau, New York, United States | 569 | |
| Valley Falls | Human settlement in Rensselaer County, New York, United States of America | 455 |