There are 26 zip codes in Rensselaer County, New York. The most populated is 12180, located in Troy. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
1218053,807Troy
1214421,808Rensselaer
1218214,790Troy
1206110,179East Greenbush
120337,640Castleton On Hudson
120187,300Averill Park
121987,150Wynantskill
120905,782Hoosick Falls
121234,938Nassau
121963,954West Sand Lake
121382,922Petersburg
121542,820Schaghticoke
120942,676Johnsonville
121212,358Melrose
120521,974Cropseyville
121851,785Valley Falls
121681,749Stephentown
120621,662East Nassau
121401,412Poestenkill
120221,038Berlin
12156831Schodack Landing
12153703Sand Lake
12063609East Schodack
12169379Stephentown
1204028Cherry Plain
120822Grafton
showing: 26 rows

Zip Codes in Rensselaer County, New York by Population (2024)