ZIP codes starting with 123
- ZIP codes
- 11
- States
- NY
- Largest city
- Schenectady, NY
- Population
- 170,822
The first three digits of a ZIP code identify a sectional center facility — the postal processing plant that sorts mail for the area. It is a mail-routing grouping, not an administrative boundary.
Every ZIP code in 123xx
| ZIP | City | Type | Population | Median income | Median home |
|---|---|---|---|---|---|
12301 | Schenectady , NY | No street area | — | — | — |
12302 | Schenectady , NY | Standard | 28,031 | $98,163 | $255,700 |
12303 | Schenectady , NY | Standard | 29,360 | $84,375 | $238,100 |
12304 | Schenectady , NY | Standard | 22,403 | $69,235 | $179,200 |
12305 | Schenectady , NY | Standard | 7,356 | $53,326 | $217,500 |
12306 | Schenectady , NY | Standard | 27,865 | $83,202 | $222,500 |
12307 | Schenectady , NY | Standard | 7,050 | $24,758 | $104,600 |
12308 | Schenectady , NY | Standard | 15,511 | $63,434 | $211,900 |
12309 | Schenectady , NY | Standard | 33,246 | $125,274 | $330,700 |
12325 | Schenectady , NY | No street area | — | — | — |
12345 | Schenectady , NY | No street area | — | — | — |
Cite this page
zipcodes.pro. “ZIP codes starting with 123.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/prefix/123
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