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
City
Population
12180Troy53,807
12144Rensselaer21,808
12182Troy14,790
12061East Greenbush10,179
12033Castleton On Hudson7,640
12018Averill Park7,300
12198Wynantskill7,150
12090Hoosick Falls5,782
12123Nassau4,938
12196West Sand Lake3,954
12138Petersburg2,922
12154Schaghticoke2,820
12094Johnsonville2,676
12121Melrose2,358
12052Cropseyville1,974
12185Valley Falls1,785
12168Stephentown1,749
12062East Nassau1,662
12140Poestenkill1,412
12022Berlin1,038
12156Schodack Landing831
12153Sand Lake703
12063East Schodack609
12169Stephentown379
12040Cherry Plain28
12082Grafton2
showing: 26 rows

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