| ZIP Codes: | 31 ZIP Codes (26 Standard, 5 PO Box, 0 Unique) [See All] |
| Area Codes: | 518 / 838 |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 2:13:16 PM |
| Population: | 160,801 [See All] |
| FIPS: | 36083 |
| CBSA: | Albany-Schenectady-Troy, NY |
| Land Area: | 725 sq mi |
| Water Area: | 13 sq mi |
| Coordinates: | 42.7044, -73.5262 |
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160,801 residents live across 31 ZIPs covering 725 sq mi, served by 28 distinct USPS-recognized cities.
Population moved from 161,451 to 160,799 from 2014 to 2024 — a -0.4% change. 12 ZIPs gained residents, 15 lost.
The county's wealthiest ZIP 12140 (Poestenkill, $138,393 median) and poorest ZIP 12182 (Troy, $56,984) are 8.6 miles apart — a 2.4× income gap across local geography.
Median home values vary 2.0× across this county — from $173,800 in 12090 (Hoosick Falls) to $345,200 in 12018 (Averill Park).
Density varies 41× across the county — from 30 people/sq mi in 12138 (Petersburg) to 1,224 in 12144 (Rensselaer).
Educational attainment ranges from 19.2% bachelor's+ in 12121 (Melrose) to 53.1% in 12061 (East Greenbush) — the breadth of educational profiles across the area.
Within New York, this is the #22 most populous of 62 counties and ranks #13 for median household income .
Weighted by population, the typical household earns about $87,974 across the county — reflecting what a typical resident sees, not a simple ZIP average.
37.5% of adults age 25+ hold a bachelor's degree or higher (42,920 of 114,336 reporting).
26 Standard delivery, 5 PO Box only, 0 single-entity Unique ZIPs serve this county.
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 12180 | Troy | Standard | 53,479 | $75,851 | 57.9 | 0.5% |
| 12144 | Rensselaer | Standard | 22,111 | $90,738 | 18.1 | 9.2% |
| 12182 | Troy | Standard | 14,867 | $56,984 | 13.9 | -0.5% |
| 12061 | East Greenbush | Standard | 9,854 | $110,962 | 20.3 | 1.1% |
| 12033 | Castleton On Hudson | Standard | 7,932 | $98,569 | 28.1 | 0.6% |
| 12018 | Averill Park | Standard | 7,422 | $126,620 | 47.5 | -6.3% |
| 12198 | Wynantskill | Standard | 6,796 | $113,083 | 13.5 | -12.0% |
| 12090 | Hoosick Falls | Standard | 5,482 | $68,056 | 52.8 | -11.2% |
| 12123 | Nassau | Standard | 4,457 | $108,878 | 33.1 | -15.8% |
| 12196 | West Sand Lake | Standard | 3,880 | $110,889 | 9.0 | 20.7% |
| 12154 | Schaghticoke | Standard | 2,777 | $106,136 | 44.4 | -6.2% |
| 12138 | Petersburg | Standard | 2,695 | $75,833 | 89.3 | -17.0% |
| 12094 | Johnsonville | Standard | 2,656 | $92,266 | 32.3 | 4.2% |
| 12121 | Melrose | Standard | 2,280 | $100,461 | 22.2 | 31.1% |
| 12052 | Cropseyville | Standard | 1,915 | $118,424 | 31.1 | 29.7% |
| 12057 | Eagle Bridge | Standard | 1,789 | $68,306 | 37.2 | -16.0% |
| 12168 | Stephentown | Standard | 1,752 | $88,830 | 31.7 | -9.6% |
| 12185 | Valley Falls | Standard | 1,709 | $110,625 | 22.7 | -21.6% |
| 12062 | East Nassau | Standard | 1,650 | $87,679 | 32.8 | -1.6% |
| 12140 | Poestenkill | Standard | 1,512 | $138,393 | 7.1 | 3.5% |
| 12022 | Berlin | Standard | 1,120 | $96,875 | 27.0 | 18.6% |
| 12156 | Schodack Landing | Standard | 808 | $108,274 | 17.2 | -15.4% |
| 12153 | Sand Lake | Standard | 669 | $89,861 | 16.9 | -14.9% |
| 12063 | East Schodack | Standard | 665 | $90,855 | 1.3 | 38.8% |
| 12169 | Stephentown | Standard | 417 | $43,936 | 12.1 | 20.5% |
| 12024 | Brainard | Standard | 78 | — | 3.0 | -17.0% |
| 12040 | Cherry Plain | PO Box | 27 | $57,955 | 0.0 | -79.5% |
| 12082 | Grafton | PO Box | 2 | — | 0.0 | — |
| 12181 | Troy | PO Box | — | — | 0.0 | — |
| 12089 | Hoosick | PO Box | — | — | 2.8 | — |
| 12133 | North Hoosick | PO Box | — | — | 0.0 | — |