Somerset County, New Jersey

Historic downtowns, Revolutionary War landmarks, Raritan River parks and NJ Transit rail service in Central New Jersey.

Somerset County sits in Central New Jersey, where the North and South Branches of the Raritan River meet to form the Raritan. Somerville, the county seat, keeps its white marble 1909 courthouse at the center of a walkable downtown, and Washington’s army spent the winter of 1778 to 1779 at Middlebrook nearby. NJ Transit’s Raritan Valley Line and Gladstone Branch, I-78, I-287, US 22, US 202 and US 206 link the county to the rest of the region.

Somerset at a Glance

21 Municipalities

Twelve boroughs and nine townships make up Somerset County.
Downtowns & Shopping

From Somerville’s historic downtown to Bridgewater Commons, with Bloomingdale’s, Macy’s and more than 130 shops and restaurants.
Central NJ Connections

NJ Transit’s Raritan Valley Line and Gladstone Branch, plus I-78, I-287, US 22, US 202 and US 206, connect Somerset with the surrounding region.

Explore Somerset County

See all 21 municipalities on the map, then explore the highlighted towns, whose in-depth guides are coming soon.

Tap the map to see a municipality’s name.

Featured towns

Map data: U.S. Census Bureau

Somerville

Historic downtown, local shops and restaurants, community events and an NJ Transit station on the Raritan Valley Line.

Town guide coming soon
Hillsborough

Duke Farms, Sourland Mountain trails, township parks and historic villages along the South Branch of the Raritan and the Millstone River.

Town guide coming soon
Bridgewater

Shopping and dining at Bridgewater Commons, Somerset Patriots baseball, and I-287, I-78, US 22 and US 202 crossing the township.

Town guide coming soon