Herkimer County ZIP Codes
Herkimer County is a county of New York.
- ZIP codes
- 17
- Cities & towns
- 17
- Area codes
- 2
- Land area
- 1,411 sq mi
Every ZIP code in Herkimer County
| ZIP code | City |
|---|---|
| 13324 | Cold Brook |
| 13329 | Dolgeville |
| 13331 | Eagle Bay |
| 13340 | Frankfort |
| 13350 | Herkimer |
| 13357 | Ilion |
| 13361 | Jordanville |
| 13365 | Little Falls |
| 13406 | Middleville |
| 13407 | Mohawk |
| 13416 | Newport |
| 13420 | Old Forge |
| 13431 | Poland |
| 13454 | Salisbury Center |
| 13472 | Thendara |
| 13475 | Van Hornesville |
| 13491 | West Winfield |
We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP. USPS delivery-type products are licensed, and no clean-rights source maps ZIP codes to neighbourhoods — so the Herkimer County codes above are listed without a column we would have to invent.
Cities and towns in Herkimer County
A further 6 places in Herkimer County appear in the postal source without a page of its own; their codes are in the table above and each one links to its own page.
Area codes covering Herkimer County
Telephone and postal boundaries are drawn by different bodies, so these codes overlap the county without matching its edges.
Where Herkimer County's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Scope every ZIP code recorded in Herkimer County. Source GeoNames US postal codes (2026-07 postal dump), Census 2024 county Gazetteer (2024 Gazetteer) and geoinfo-dataset (full_dataset) ZIP→NPA (2018 snapshot). Updated . The outline is a convex envelope of ZIP reference points, not a jurisdiction boundary.