Williams County GIS Maps

Williams 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.

Williams County Parcels

Williams County has 34,075 mapped parcels covering 1,362,228 acres. The median assessed value is $80,240. The median lot size is 2.00 acres. 13,172 parcels are 10 acres or larger. Agricultural accounts for 42.0% of parcels. Residential follows at 28.4% and commercial at 17.8%. The records carry 13,445 distinct owner names. About 24% of parcels list an owner mailing address outside North Dakota. Owner names, assessed values and lot sizes are on nearly every parcel. Mailing addresses reach 97.6%. Browse the interactive Williams County Parcel viewer here.

Williams County Parcel Data Coverage

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

Williams County Population

Williams County had 40,950 residents in 2020. That was 82.8% higher than in 2010. Williams County added 21,189 people between 2000 and 2020, which points to steady long-term growth. The county is fairly spread out, with about 20 people per square mile. Some of the county's most populated postal areas include Williston, Tioga and Ray.

Population Trend in Williams County ND

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

Williams County Zip Codes

Williams County has 9 zip codes. Some of the county's most populated zip codes include Williston (58801), Tioga (58852) and Ray (58849). Williston is the largest zip by population, with about 34,921 residents or 85% of the county total. Together, the three largest zips account for about 95% of all county residents based on 2020 population estimates.

Most Populated Zip Codes in Williams County ND

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

Williams County Demographics

Williams County has a median age of 32.3, which makes the county a little younger than North Dakota overall. About 30% of residents are under 18, while 9.9% 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 38.2% of the population, which points to a solid working-age base. About 23.7% of adults have a bachelor's degree or higher, above the statewide figure of 32.3%. 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 Williams County ND

Williams County School Districts

Williams County is served by 6 public school districts with 7,267 students enrolled in 2024. The largest districts on the county map are Williston Basin Public 7, Tioga Public 15 and Nesson Public 2. Those three districts account for about 88% of public school enrollment in the map area. Total enrollment has grown modestly since 2017 across the districts shown on the county map.

Largest School Districts by Enrollment in Williams County ND

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

Williams County Housing & Real Estate

Williams County has a median home value of $267,800 and a median gross rent of $1,108. About 57% of occupied homes in the county are owner-occupied, so the local housing market leans heavily toward ownership. Home values run above the North Dakota median, while rents come in above the state average. In March 2026, the median listing price was $438,750 and homes spent about 64 days on the market.

Businesses in Williams County, ND

Williams County has 1,988 business listings across 478 categories. The largest categories in Williams County business listings are Landmark And Historical Building (44, 2.2%), Churches & Religious Organizations (42, 2.1%), and Auto Repair (38, 1.9%). The full Williams County business listings dataset includes names, categories, addresses and contact details where available. Williams County packages also include U.S. Census County Business Patterns data with establishment counts, employment and payroll by industry sector.

Top Business Categories in Williams County, ND

Williams County Business Listings

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

Williams County Basemaps

Williams 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 North Dakota — explore the full structure before you buy.