County ZIP codes · New York · FIPS 36093
Schenectady County, NY ZIP Codes
Schenectady County, New York has 21 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026): 17 residential and 4 for PO boxes or a single organization. 12 of the residential ones lie mainly in Schenectady County and 5 mainly in a neighboring county; 11 cross the county line. Median household income ranges from $53,326 in 12305 to $125,274 in 12309 (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
Where are the ZIP codes of Schenectady 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 $63,696 and $98,163.
They carry 10 postal town names.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).
All 17 residential ZIP codes in Schenectady County
12 ZIP codes lie mainly in Schenectady County; 5 more reach into it from a neighboring county and follow the first table.
| In this county | ||||||
|---|---|---|---|---|---|---|
| 12309 | Schenectady | 33,246 | 1,893 | $125k | $331k | 82% |
| 12302 | Schenectady | 28,031 | 646 | $98k | $256k | 91% |
| 12306 | Schenectady | 27,865 | 634 | $83k | $223k | 96% |
| 12304 | Schenectady | 22,403 | 3,362 | $69k | $179k | 66% |
| 12308 | Schenectady | 15,511 | 6,765 | $63k | $212k | 100% |
| 12305 | Schenectady | 7,356 | 4,950 | $53k | $218k | 100% |
| 12307 | Schenectady | 7,050 | 9,888 | $25k | $105k | 100% |
| 12053 | Delanson | 4,550 | 81 | $92k | $267k | 68% |
| 12137 | Pattersonville | 2,077 | 89 | $84k | $272k | 82% |
| 12056 | Duanesburg | 1,695 | 90 | $132k | $375k | 100% |
| 12150 | Rotterdam Junction | 710 | 597 | $80k | $232k | 100% |
| 12008 | Alplaus | 422 | 631 | $126k | $304k | 100% |
Partly in Schenectady County
| In this county | ||||||
|---|---|---|---|---|---|---|
| 12303 | Schenectady | 29,360 | 1,886 | $84k | $238k | 29% |
| 12066 | Esperance | 1,863 | 57 | $79k | $198k | 23% |
| 12027 | Burnt Hills | 4,693 | 629 | $120k | $344k | 12% |
| 12010 | Amsterdam | 27,750 | 216 | $64k | $180k | 6% |
| 12019 | Ballston Lake | 15,555 | 547 | $112k | $400k | 2% |
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?
11 ZIP codes of Schenectady County extend into another county. A ZIP code follows mail routes, not county borders.
| ZIP | In Schenectady | Elsewhere |
|---|---|---|
| 12309 | 82% | Albany County 19% |
| 12303 | 29% | Albany County 71% |
| 12302 | 91% | Saratoga County 9% |
| 12306 | 96% | Albany County 4% |
| 12010 | 6% | Montgomery County 64%; Fulton County 19%; Saratoga County 12% |
| 12304 | 66% | Albany County 34% |
| 12019 | 2% | Saratoga County 98% |
| 12027 | 12% | Saratoga County 88% |
| 12053 | 68% | Albany County 17%; Schoharie County 13%; Montgomery County 2% |
| 12137 | 82% | Montgomery County 18% |
| 12066 | 23% | Montgomery County 47%; Schoharie County 30% |
Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).
PO Box and single-organization ZIP codes
Source: GeoNames postal codes (CC BY 4.0).
Which first three digits do Schenectady County's ZIP codes use?
The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Schenectady County's ZIP codes use 3 prefixes: 120, 121 and 123.
| Prefix | Sectional center | Here | All codes |
|---|---|---|---|
| 120 | Albany, NY (SCF 120) | 7 | 71 |
| 121 | Albany, NY (SCF 120) | 3 | 73 |
| 123 | Albany, NY (SCF 120) | 11 | 11 |
Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.