Hunterdon County, New Jersey
County seat: Flemington · Population 131,781 (2025) · 428 sq mi
Hunterdon County is the 18th most populous of New Jersey's 21 counties, with 131,781 people (2025 estimate). Its county seat is Flemington. The map shows its 12 cities and towns and the 5 neighboring counties.
Hunterdon County facts
- County seat
- Flemington
- Population (2025 estimate)
- 131,781 +2.2% since 2020
- Land area
- 428 sq mi 8th largest of 21
- Water area
- 10 sq mi
- Population density
- 308 per sq mi
- Established
- 1714
- Named after
- Robert Hunter British military officer, governor of Virginia, New York, New Jersey, Jamaica
- Largest city
- Raritan 25,281
- Median household income
- $141,715
- Cities and towns
- 12 plus 7 CDPs
- ZIP codes
- 26
- Time zone
- Eastern
- FIPS code
- 34019
Cities and towns in Hunterdon County
Hunterdon County has 12 incorporated cities, towns and villages. Populations count the people living inside Hunterdon County; cities that cross a county line also list the other counties.
| Name | Type | Population 2025 | Also in |
|---|---|---|---|
| Flemington (county seat) | Borough | 4,856 | |
| Lambertville | City | 4,198 | |
| High Bridge | Borough | 3,603 | |
| Clinton | Town | 2,794 | |
| Glen Gardner | Borough | 1,690 | |
| Lebanon | Borough | 1,676 | |
| Frenchtown | Borough | 1,500 | |
| Hampton | Borough | 1,443 | |
| Milford | Borough | 1,224 | |
| Califon | Borough | 1,034 | |
| Bloomsbury | Borough | 802 | |
| Stockton | Borough | 497 |
Unincorporated communities (CDPs)
Census-designated places are communities without their own city government; the county provides their services.
| Community | Population | Also in |
|---|---|---|
| White House Station | 3,963 | |
| Annandale | 1,568 | |
| Ringoes | 934 | |
| Three Bridges | 630 | |
| Oldwick | 462 | |
| Neshanic Station | 202 | Somerset County |
| Pottersville | 178 | Somerset County |
ZIP codes in Hunterdon County
26 ZIP codes reach into Hunterdon County. ZIP codes ignore county lines, so some also cover a neighboring county.
- 07830 also Morris County
- 07865 also Warren and Morris counties
- 07882 also Warren County
- 07979 also Somerset County
- 08525 also Mercer and Somerset counties
- 08530 also Mercer County
- 08551
- 08559
- 08560 also Mercer County
- 08801
- 08802 also Warren County
- 08804 also Warren County
- 08809
- 08822
- 08825
- 08826
- 08827 also Warren County
- 08829
- 08833
- 08848
- 08853 also Somerset County
- 08858
- 08867
- 08876 also Somerset County
- 08887
- 08889
Population of Hunterdon County, 2020–2025
Hunterdon County grew by 2,827 people (+2.2%) between April 2020 and July 2025: 45 more deaths than births and a net gain of 2,880 people from migration.
| Year (July 1) | Population |
|---|---|
| 2020 | 128,773 |
| 2021 | 129,700 |
| 2022 | 129,859 |
| 2023 | 130,313 |
| 2024 | 131,097 |
| 2025 | 131,781 |
Neighboring counties
- Somerset County east · 356,486 people
- Bucks County, Pennsylvania southwest · 647,828 people
- Warren County north · 112,953 people
- Mercer County southeast · 399,289 people
- Morris County northeast · 524,251 people
Printable Hunterdon 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) (104 KB)
- PNG (2400 px) (109 KB)
Paste this code to embed the map on your site:
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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