Somerset County GIS Maps

Somerset County Maps

The maps below show a few of the county map styles included in our downloads. County packages include map exports in JPEG, PNG, SVG, PDF and GeoTIFF formats plus more than 20 GIS layers for mapping, research and analysis. Available layers include zip codes, area codes, subdivisions, school districts, political boundaries, roads, water features, points of interest and more.

County packages also include historical county demographics, business intelligence, analytical dashboards, AI-ready prompts, markdown files and related reference data. Everything is organized to save hours of manual work collecting current data, cleaning it and joining it together. That makes it easier to move faster on analytics, due diligence, business planning and location research. Paid packages are built for commercial use, but some package contents include source-specific attribution or notice guidance. Review Licensing & Data Source Notices.

Somerset County Parcels

Somerset County has 132,708 mapped parcels covering 180,915 acres. The median assessed value is $509,800. The median lot size is 0.46 acres. 2,261 parcels are 10 acres or larger. Of the parcels with a recorded build year, half were built in 1982 or earlier. About 2% of parcels list an owner mailing address outside New Jersey. Mailing addresses reach 88.5%. Site addresses reach 88.5%. Browse the interactive Somerset County Parcel viewer here.

Somerset County Parcel Data Coverage

Field coverage measured across all Somerset County parcel records. Download free sample data here.

Somerset County Population

Somerset County had 345,361 residents in 2020. That was 6.8% higher than in 2010. Somerset County added 47,871 people between 2000 and 2020, which points to steady long-term growth. The county is fairly spread out, with about 1,144 people per square mile. Some of the county's most populated postal areas include Somerset, Hillsborough and Bridgewater.

Population Trend in Somerset County NJ

Somerset County Population per 2000, 2010 and 2020 census counts with a baseline 2030 projection.

Somerset County Zip Codes

Somerset County has 27 zip codes. Some of the county's most populated zip codes include Somerset (08873), Hillsborough (08844) and Bridgewater (08807). Somerset is the largest zip by population, with about 55,500 residents or 16% of the county total. Together, the three largest zips account for about 40% of all county residents based on 2020 population estimates.

Most Populated Zip Codes in Somerset County NJ

Somerset County Zip Code populations and trends per most recent census data.

Somerset County Demographics

Somerset County has a median age of 41.9, which makes the county a little older than New Jersey overall. About 21.4% of residents are under 18, while 16.6% are 65 or older. That gives the county a fairly even mix of younger families and older adults. The largest age group is 25 to 44 at about 31.4% of the population, which points to a solid working-age base. About 57.4% of adults have a bachelor's degree or higher, above the statewide figure of 42.9%. The county has a more diverse population mix, with no single race or ethnicity accounting for all of the local story.

Key Demographics for Somerset County NJ

Somerset County School Districts

Somerset County is served by 14 public school districts with 44,727 students enrolled in 2024. The largest districts on the county map are Bridgewater-Raritan Regional, Hillsborough Township and Franklin Township. Those three districts account for about 49% of public school enrollment in the map area. Total enrollment has stayed fairly steady in recent years, but it is slightly lower than it was in 2017.

Largest School Districts by Enrollment in Somerset County NJ

Somerset County school district enrollment and trends per most recent NCES reporting data.

Somerset County Housing & Real Estate

Somerset County has a median home value of $523,900 and a median gross rent of $1,921. About 74% of occupied homes in the county are owner-occupied, so the local housing market leans heavily toward ownership. Home values run above the New Jersey median, while rents come in above the state average. In March 2026, the median listing price was $634,225 and homes spent about 25 days on the market.

Businesses in Somerset County, NJ

Somerset County has 13,375 business listings across 937 categories. The largest categories in Somerset County business listings are Real Estate Agents (284, 2.1%), Medical Offices (228, 1.7%), and Churches & Religious Organizations (187, 1.4%). The full Somerset County business listings dataset includes names, categories, addresses and contact details where available. Somerset County packages also include U.S. Census County Business Patterns data with establishment counts, employment and payroll by industry sector.

Top Business Categories in Somerset County, NJ

Somerset County Business Listings

Somerset County business listings sourced from Overture Maps. Includes locations with a high level of confidence.

Somerset County Basemaps

Somerset County map and data packages include a set of useful basemaps to help you get started quickly. These include a custom light grey canvas, USGS topo, imagery and other reference layers that make it easier to build clear, meaningful county maps using the included GIS layers, your own data or both. Pre-rendered map tiles for the light grey basemap are included so you can use them offline or host them on your own CDN.

Preview a Live Package Demo

See exactly what is included in a county data package. Inspect how files are organized, the interactive data explorer and how maps and analytics are laid out. The demo loads a real sample package from New Jersey — explore the full structure before you buy.