Williams County, North Dakota Demographics 2026

Name: Williams County, North Dakota Demographics
Creator: U.S. Census Bureau
License: https://www.census.gov/data/developers/about/terms-of-service.html

Williams County, North Dakota has a population of 39,555, the 5th most populous county in North Dakota. The median household income is $85,595 and the median home value is $284,800. The poverty rate is 8.6%.

Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes

Williams County Quick Facts

Population 39,555

Median Household Income $85,595

Median Home Value $284,800

Poverty Rate 8.6%

Unemployment Rate 4.4%

Median Age 31.8 years

Homeownership Rate 53.0%

Affordability Ratio 3.3x

Bachelor's Degree+ 24.4%

High School Graduation 93.0%

Cities/Places 12

Population 39,555 5th of 53

Median Income $85,595 12% higher than state

Poverty Rate 8.6%

Unemployment 4.4%

How Williams County Changed

Change from the 2019–2023 ACS period to 2020–2024. These are rolling five-year estimates, not year-over-year measurements.

Metric	2019–2023	2020–2024	Change
Population	39,368	39,555	+0.5%
Median household income	$90,224	$85,595	-5.1%
Median home value	$267,800	$284,800	+6.3%

Median Household Income

Williams

$85,595

$76,657

National

$80,734

Median Home Value

Williams

$284,800

$249,900

National

$332,700

Economy & Housing

Household Income Distribution

Under $25K 9.3%

$25K-$50K 18.4%

$50K-$100K 31.0%

$100K+ 41.2%

Detailed income brackets

Under $10K

3.2%

$10K-$15K

2.9%

$15K-$20K

1.6%

$20K-$25K

1.6%

$25K-$30K

5.3%

$30K-$35K

2.3%

$35K-$40K

4.1%

$40K-$45K

3.9%

$45K-$50K

2.9%

$50K-$60K

9.2%

$60K-$75K

7.3%

$75K-$100K

14.5%

$100K-$125K

8.5%

$125K-$150K

7.4%

$150K-$200K

11.3%

$200K+

14.0%

Employment

4.4% Unemployment Rate State: 2.8%|National: 5.2%

73.4% Labor Force Participation

Housing Overview

Owner 53.0%

Renter 47.0%

Affordability Index Affordable

3.3x home value to income ratio

Median gross rent $1,123/mo 15.7% of median household income annually

People & Demographics

Age Distribution

Under 18

30.2%

18-34

24.6%

35-54

26.6%

55-74

14.9%

75+

3.7%

Race & Ethnicity

Diversity Index

Moderate Diversity

Moderate diversity with one or two groups making up the majority.

State average: 32 | National average: 61

Education

Educational Attainment (Adults 25+)

Cities & Places in Williams County

City	Population	Median Income	Poverty	Home Value
Williston	28,056	$79,381	8.1%	$286,200
Tioga	1,657	$66,181	8.0%	$199,600
Ray	714	$72,031	12.3%	$227,600
Grenora	408	N/A	16.2%	$97,200
Trenton	406	$107,417	1.7%	$305,400
Wildrose	260	$95,536	19.6%	$113,800
Epping	124	$67,174	1.7%	$209,000
McGregor	108	N/A	0.0%	N/A
Blacktail	93	N/A	0.0%	N/A
Alamo	47	$58,333	6.4%	$108,300
Long Creek	38	N/A	0.0%	N/A
Springbrook	27	N/A	48.1%	N/A

Explore North Dakota Rankings

Cities by Population All cities ranked by size Richest Cities Ranked by median income Most Educated By bachelor's degree rate Most Affordable By housing affordability

Population Overview

Williams County is located in North Dakota with a total population of 39,555. It is the 5th most populous county out of 53 in North Dakota. The county encompasses 12 Census-designated places.

Age Demographics

The median age in Williams County is 31.8 years. This is 11% lower than the state median of 35.9 years. With 30.2% of the population under 18, Williams County has a notably young demographic profile, suggesting a family-oriented community.

Economy, Income & Housing

The median household income in Williams County is $85,595. This is 12% higher than the state median of $76,657. It is also 6% higher than the national median of $80,734. The poverty rate stands at 8.6%. This is 20% lower than the state poverty rate of 10.8%. The unemployment rate is 4.4%. This is 58% higher than the state rate of 2.8%. The median home value is $284,800. Housing costs are 14% higher than the state median of $249,900. The home-value-to-income ratio is 3.3x. 53.0% of occupied housing units are owner-occupied. This homeownership rate is 16% lower than the state average of 62.8%.

Race & Ethnicity

The largest racial or ethnic group in Williams County is White (non-Hispanic), making up 75.7% of the population. Hispanic or Latino residents account for 10.2%. The Hispanic or Latino population is significantly higher than the state average (10.2% vs 4.7%).

Education

24.4% of residents aged 25 and older hold a bachelor's degree or higher. This is 25% lower than the state rate of 32.7%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 93.0%.

Data Sources & Methodology

All figures for Williams County come from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates, with comparisons drawn against North Dakota and national averages from the same dataset. See our methodology page for how each metric is defined, or data.census.gov for official tables with margins of error.

Frequently Asked Questions

What is the population of Williams County, North Dakota?

Williams County has a population of 39,555, making it the 5th most populous county in North Dakota.

What is the median income in Williams County?

The median household income in Williams County is $85,595 with a poverty rate of 8.6%.

How many cities are in Williams County, North Dakota?

Williams County contains 12 Census-designated places.