Hunterdon County vs. Warren County
Two neighboring New Jersey counties, side by side, from county seats and rail lines to parks and trails.
Side by side
Facts from official county, state and federal sources and other published sources. Each county’s guide has more.
| Fact | Hunterdon County | Warren County |
|---|---|---|
| County seat | Flemington | Belvidere |
| Municipalities | 26 municipalities 14 townships, 10 boroughs, one town (Clinton) and one city (Lambertville) make up Hunterdon County. | 22 municipalities Three towns, two boroughs and 17 townships make up Warren County. |
| Land area | 427.8 square miles | 356.5 square miles |
| Landscape | Rolling farmland and wooded ridges, crossed by the South Branch of the Raritan and bounded on the west by the Delaware River. | Ridges and valleys running northeast to southwest, from Kittatinny Mountain to Pohatcong Mountain, drained by the Musconetcong, Pequest and Paulinskill into the Delaware. |
| Downtowns | Flemington’s Main Street, Clinton’s mill-town center on the South Branch, and the Delaware River towns of Lambertville, Stockton, Frenchtown and Milford. | Hackettstown’s Main Street, Washington Borough’s crossroads downtown, Phillipsburg’s Union Square and historic district, and Belvidere’s courthouse square. |
| Rail | Raritan Valley Line, weekdays only, at High Bridge, Annandale, Lebanon and White House. Flemington and the river towns have no NJ Transit rail. | Hackettstown station, the western end of NJ Transit’s Montclair-Boonton Line and Morris & Essex Lines, with weekday trains toward Hoboken and New York. |
| Highways | I-78 and US 22 at Clinton; US 202 and Routes 31 and 12 at the Flemington Circle; Route 29 along the Delaware. | I-78 and I-80, US 22 and US 46, and Routes 31, 57 and 94. |
| Outdoors | Round Valley and Spruce Run reservoirs, the Columbia Trail’s seven Hunterdon miles above the South Branch, and the D&R Canal towpath along the Delaware. | Delaware Water Gap National Recreation Area, Stephens State Park, and six county parks along the Morris Canal Greenway. |
| Featured towns | Flemington, Raritan Township, Clinton, and LambertvilleMore town guides coming soon | Hackettstown, Washington Borough, and PhillipsburgTown guides coming soon |
| Full guide | Read the Hunterdon County guide | Read the Warren County guide |
Land area and municipalities: U.S. Census Bureau. The other rows: county, municipal, NJ Transit, NJDOT, other state and federal sources, and local organizations, checked in October 2026.
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Read the full guides
Each guide maps every municipality in the county, with its featured towns and facts at a glance.
More comparisons: Hunterdon vs. Morris, Hunterdon vs. Somerset, Morris vs. Warren, and Somerset vs. Warren
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