Warren County GIS Maps

Warren 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.

Warren County Parcels

Warren County has 48,866 mapped parcels covering 223,749 acres. The median assessed value is $184,000. The median lot size is 0.50 acres. 3,403 parcels are 10 acres or larger. Of the parcels with a recorded build year, half were built in 1970 or earlier. About 5% of parcels list an owner mailing address outside New Jersey. Mailing addresses reach 96.0%. Site addresses reach 96.0%. Browse the interactive Warren County Parcel viewer here.

Warren County Parcel Data Coverage

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

Warren County Population

Warren County had 109,632 residents in 2020. That was 0.9% higher than in 2010. Warren County added 7,195 people between 2000 and 2020, which points to steady long-term growth. Phillipsburg is the largest city in the county, but it accounts for only about 14% of the total population. The county is fairly spread out, with about 307 people per square mile. Some of the county's most populated postal areas include Hackettstown, Phillipsburg and Washington.

Population Trend in Warren County NJ

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

Warren County Zip Codes

Warren County has 16 zip codes. Some of the county's most populated zip codes include Hackettstown (07840), Phillipsburg (08865) and Washington (07882). Hackettstown is the largest zip by population, with about 31,255 residents or 29% of the county total. Together, the three largest zips account for about 70% of all county residents based on 2020 population estimates.

Most Populated Zip Codes in Warren County NJ

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

Warren County Demographics

Warren County has a median age of 43.9, which makes the county a little older than New Jersey overall. About 19.4% of residents are under 18, while 19% 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 29.6% of the population, which points to a solid working-age base. About 36.4% of adults have a bachelor's degree or higher, above the statewide figure of 42.9%. The county is majority White by population, with Hispanic, Asian, Black and multiracial residents making up a meaningful share of the local mix.

Key Demographics for Warren County NJ

Warren County School Districts

Warren County is served by 13 public school districts with 10,281 students enrolled in 2024. The largest districts on the county map are Phillipsburg Town, Hackettstown Town and Lopatcong Township. Those three districts account for about 64% of public school enrollment in the map area. Total enrollment has stayed fairly steady in recent years, based on district totals from 2017 to 2024.

Largest School Districts by Enrollment in Warren County NJ

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

Warren County Housing & Real Estate

Warren County has a median home value of $323,100 and a median gross rent of $1,368. About 74% of occupied homes in the county are owner-occupied, so the local housing market leans heavily toward ownership. Home values run below the New Jersey median, while rents come in below the state average. In March 2026, the median listing price was $421,950 and homes spent about 30 days on the market.

Businesses in Warren County, NJ

Warren County has 4,462 business listings across 653 categories. The largest categories in Warren County business listings are Churches & Religious Organizations (98, 2.2%), Farm (91, 2.0%), and Auto Repair (84, 1.9%). The full Warren County business listings dataset includes names, categories, addresses and contact details where available. Warren County packages also include U.S. Census County Business Patterns data with establishment counts, employment and payroll by industry sector.

Top Business Categories in Warren County, NJ

Warren County Business Listings

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

Warren County Basemaps

Warren 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.