| ZIP Codes: | 17 ZIP Codes (13 Standard, 3 PO Box, 1 Unique) [See All] |
| Area Codes: | 518 / 838 |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 2:13:17 PM |
| Population: | 180,276 [See All] |
| FIPS: | 36093 |
| CBSA: | Albany-Schenectady-Troy, NY |
| Land Area: | 238 sq mi |
| Water Area: | 5 sq mi |
| Coordinates: | 42.8119, -73.9931 |
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180,276 residents live across 17 ZIPs covering 238 sq mi, served by 7 distinct USPS-recognized cities.
Population moved from 172,946 to 180,276 from 2014 to 2024 — a +4.2% change. 7 ZIPs gained residents, 6 lost.
The county's wealthiest ZIP 12056 (Duanesburg, $132,150 median) and poorest ZIP 12307 (Schenectady, $24,758) are 8.0 miles apart — a 5.3× income gap across local geography.
Median home values vary 3.6× across this county — from $104,600 in 12307 (Schenectady) to $374,500 in 12056 (Duanesburg).
Density varies 114× across the county — from 79 people/sq mi in 12053 (Delanson) to 9,080 in 12307 (Schenectady).
Most of the decade's growth concentrated around Schenectady — top growth ZIPs averaged +23.2% over the past ten years ( 12305 , 12309 and 12306 ).
Educational attainment ranges from 8.9% bachelor's+ in 12307 (Schenectady) to 61.1% in 12309 (Schenectady) — the breadth of educational profiles across the area.
Within New York, this is the #21 most populous of 62 counties and ranks #18 for median household income .
Hosts 1 single-entity Unique ZIP: 12345General Electric .
Weighted by population, the typical household earns about $87,313 across the county — reflecting what a typical resident sees, not a simple ZIP average.
37.9% of adults age 25+ hold a bachelor's degree or higher (47,104 of 124,432 reporting). The most-educated ZIPs cluster around Schenectady.
13 Standard delivery, 3 PO Box only, 1 single-entity Unique ZIPs serve this county.
1 ZIP in this county where more than 60% of adults 25+ hold a bachelor's degree — typically college campuses, research enclaves, or tech corridors.
Median household income spans 5.3× between the wealthiest and poorest ZIPs — a sign of significant intra-county inequality.
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 12309 | Schenectady | Standard | 33,246 | $125,274 | 18.1 | 10.8% |
| 12303 | Schenectady | Standard | 29,360 | $84,375 | 15.6 | -1.8% |
| 12302 | Schenectady | Standard | 28,031 | $98,163 | 45.3 | 0.8% |
| 12306 | Schenectady | Standard | 27,865 | $83,202 | 46.7 | 9.3% |
| 12304 | Schenectady | Standard | 22,403 | $69,235 | 6.8 | -0.6% |
| 12308 | Schenectady | Standard | 15,511 | $63,434 | 2.4 | 2.1% |
| 12305 | Schenectady | Standard | 7,356 | $53,326 | 1.2 | 49.4% |
| 12307 | Schenectady | Standard | 7,050 | $24,758 | 0.8 | 1.4% |
| 12053 | Delanson | Standard | 4,550 | $91,991 | 57.2 | -1.2% |
| 12137 | Pattersonville | Standard | 2,077 | $83,879 | 22.6 | 9.3% |
| 12056 | Duanesburg | Standard | 1,695 | $132,150 | 19.3 | -26.9% |
| 12150 | Rotterdam Junction | Standard | 710 | $79,776 | 1.5 | -15.7% |
| 12008 | Alplaus | Standard | 422 | $125,859 | 0.8 | -12.1% |
| 12325 | Schenectady | PO Box | — | — | 0.0 | — |
| 12141 | Quaker Street | PO Box | — | — | 0.0 | — |
| 12345 | Schenectady | Unique | — | — | 0.2 | — |
| 12301 | Schenectady | PO Box | — | — | 0.0 | — |