Herkimer County, New York
County seat: Herkimer · Population 59,219 (2025) · 1,411 sq mi
Herkimer County is the 43rd most populous of New York's 62 counties, with 59,219 people (2025 estimate). Its county seat is Herkimer. The map shows its 11 cities and towns and the 7 neighboring counties.
Herkimer County facts
- County seat
- Herkimer
- Population (2025 estimate)
- 59,219 −1.6% since 2020
- Land area
- 1,411 sq mi 6th largest of 62
- Water area
- 47 sq mi
- Population density
- 42 per sq mi
- Established
- 1791
- Named after
- Nicholas Herkimer American general
- Largest city
- German Flatts 11,969
- Median household income
- $68,515
- Cities and towns
- 11 plus 7 CDPs
- ZIP codes
- 29
- Time zone
- Eastern
- FIPS code
- 36043
Cities and towns in Herkimer County
Herkimer County has 11 incorporated cities, towns and villages. Populations count the people living inside Herkimer County; cities that cross a county line also list the other counties.
| Name | Type | Population 2025 | Also in |
|---|---|---|---|
| Ilion | Village | 7,488 | |
| Herkimer (county seat) | Village | 7,195 | |
| Little Falls | City | 4,481 | |
| Mohawk | Village | 2,350 | |
| Frankfort | Village | 2,275 | |
| Dolgeville | Village | 1,877 | Fulton County |
| West Winfield | Village | 724 | |
| Newport | Village | 550 | |
| Poland | Village | 474 | |
| Middleville | Village | 426 | |
| Cold Brook | Village | 255 |
Unincorporated communities (CDPs)
Census-designated places are communities without their own city government; the county provides their services.
| Community | Population | Also in |
|---|---|---|
| East Herkimer | 659 | |
| Old Forge | 574 | |
| East Frankfort | 571 | |
| Salisbury Center | 207 | |
| South Ilion | 195 | |
| Eagle Bay | 90 | |
| Thendara | 64 |
ZIP codes in Herkimer County
29 ZIP codes reach into Herkimer County. ZIP codes ignore county lines, so some also cover a neighboring county.
- 13304 also Oneida County
- 13322 also Oneida County
- 13324
- 13329 also Fulton County
- 13331 also Hamilton County
- 13338 also Oneida County
- 13339 also Montgomery and Fulton counties
- 13340
- 13350
- 13357
- 13361 also Otsego County
- 13365
- 13367 also Lewis County
- 13406
- 13407
- 13413 also Oneida County
- 13416
- 13420
- 13431 also Oneida County
- 13438 also Oneida County
- 13439 also Otsego County
- 13454
- 13456 also Oneida County
- 13470 also Fulton County
- 13472
- 13475
- 13491 also Otsego, Madison and Oneida counties
- 13501 also Oneida County
- 13502 also Oneida County
Population of Herkimer County, 2020–2025
Herkimer County shrank by 936 people (−1.6%) between April 2020 and July 2025: 1,089 more deaths than births and a net gain of 150 people from migration.
| Year (July 1) | Population |
|---|---|
| 2020 | 60,043 |
| 2021 | 60,036 |
| 2022 | 59,581 |
| 2023 | 59,551 |
| 2024 | 59,368 |
| 2025 | 59,219 |
Neighboring counties
- Oneida County southwest · 226,392 people
- Hamilton County east · 5,006 people
- Lewis County northwest · 26,479 people
- Otsego County south · 60,589 people
- Fulton County southeast · 52,216 people
- St. Lawrence County north · 105,488 people
- Montgomery County southeast · 50,046 people
Printable Herkimer County map
The PDF is a vector file with real text: it prints sharp on Letter paper and you can search it for a town. The PNG is 2400 pixels wide for slides and documents. Both are free to use with a credit to WhichCounty.
- PDF (Letter) (165 KB)
- PNG (2400 px) (137 KB)
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Sources
- Boundaries: U.S. Census Bureau, 2025 Cartographic Boundary Files (1:500,000).
- Population: Census Bureau county and city estimates, Vintage 2025. CDP populations: American Community Survey 2020–2024.
- Places and ZIP codes: Census Bureau 2026 Gazetteer and 2020 ZIP Code Tabulation Area relationship files.
- County seat, founding year and name origin: Wikidata (CC0), checked against state sources.
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