County ZIP codes · New York · FIPS 36083
Rensselaer County, NY ZIP Codes
Rensselaer County, New York has 33 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026): 30 residential and 3 for PO boxes or a single organization. 26 of the residential ones lie mainly in Rensselaer County and 4 mainly in a neighboring county; 10 cross the county line. Median household income ranges from $56,984 in 12182 (Troy) to $126,620 in 12018 (Averill Park) (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
Where are the ZIP codes of Rensselaer County?
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).
How different are its ZIP codes?
The middle half of its ranked ZIP codes (1,000+ people living in households) report median household incomes between $88,830 and $108,878.
They carry 28 postal town names.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).
All 30 residential ZIP codes in Rensselaer County
26 ZIP codes lie mainly in Rensselaer County; 4 more reach into it from a neighboring county and follow the first table.
| In this county | ||||||
|---|---|---|---|---|---|---|
| 12180 | Troy | 53,479 | 951 | $76k | $244k | 100% |
| 12144 | Rensselaer | 22,111 | 1,207 | $91k | $250k | 100% |
| 12182 | Troy | 14,867 | 1,089 | $57k | $213k | 100% |
| 12061 | East Greenbush | 9,854 | 491 | $111k | $344k | 100% |
| 12033 | Castleton On Hudson | 7,932 | 278 | $99k | $289k | 100% |
| 12018 | Averill Park | 7,422 | 161 | $127k | $345k | 100% |
| 12198 | Wynantskill | 6,796 | 513 | $113k | $285k | 100% |
| 12090 | Hoosick Falls | 5,482 | 95 | $68k | $174k | 100% |
| 12123 | Nassau | 4,457 | 140 | $109k | $297k | 98% |
| 12196 | West Sand Lake | 3,880 | 433 | $111k | $317k | 100% |
| 12154 | Schaghticoke | 2,777 | 65 | $106k | $251k | 55% |
| 12138 | Petersburg | 2,695 | 30 | $76k | $192k | 100% |
| 12094 | Johnsonville | 2,656 | 84 | $92k | $261k | 85% |
| 12121 | Melrose | 2,280 | 118 | $101k | $297k | 100% |
| 12052 | Cropseyville | 1,915 | 64 | $118k | $244k | 100% |
| 12168 | Stephentown | 1,752 | 57 | $89k | $204k | 100% |
| 12185 | Valley Falls | 1,709 | 75 | $111k | $211k | 74% |
| 12062 | East Nassau | 1,650 | 50 | $88k | $250k | 90% |
| 12140 | Poestenkill | 1,512 | 211 | $138k | $302k | 100% |
| 12022 | Berlin | 1,120 | 47 | $97k | $208k | 100% |
| 12156 | Schodack Landing | 808 | 56 | $108k | $242k | 71% |
| 12153 | Sand Lake | 669 | 39 | $90k | $292k | 100% |
| 12063 | East Schodack | 665 | 520 | $91k | $299k | 100% |
| 12169 | Stephentown | 417 | 36 | $44k | $210k | 100% |
| 12040 | Cherry Plain | 27 | 450 | $58k | $309k | 100% |
| 12082 | Grafton | 2 | 105 | – | – | 100% |
Partly in Rensselaer County
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; county shares by land area (Census 2020 ZCTA-county relationship file).
Which ZIP codes cross the county line?
10 ZIP codes of Rensselaer County extend into another county. A ZIP code follows mail routes, not county borders.
| ZIP | In Rensselaer | Elsewhere |
|---|---|---|
| 12118 | 3% | Saratoga County 97% |
| 12184 | 2% | Columbia County 98% |
| 12123 | 98% | Columbia County 2% |
| 12154 | 55% | Washington County 45% |
| 12094 | 85% | Washington County 15% |
| 12057 | 18% | Washington County 82% |
| 12185 | 74% | Washington County 26% |
| 12062 | 90% | Columbia County 10% |
| 12028 | 47% | Washington County 53% |
| 12156 | 71% | Columbia County 29% |
Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).
PO Box and single-organization ZIP codes
| ZIP | Postal name |
|---|---|
| 12089 | Hoosick |
| 12133 | North Hoosick |
| 12181 | Troy |
Source: GeoNames postal codes (CC BY 4.0).
Which first three digits do Rensselaer County's ZIP codes use?
The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Rensselaer County's ZIP codes use 2 prefixes: 120 and 121.
Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.