County · North Dakota
Williams County, North Dakota
Williams County, North Dakota. Williams County had 41,767 residents in 2025 by the Census Bureau's estimate, up 2.0% since 2020, slower than North Dakota (+2.6%). It holds 63 places (8 cities, villages and boroughs, 51 towns and townships and 4 census-designated) and 8 census tracts. GEOID 38105.
Williams County is the county of the Williston, ND micropolitan statistical area (the Census Bureau's July 2023 delineation).
Residents, July 2025 estimate
41,767
Census Bureau estimate (no margin published)
2020 Census count: 40,950 · ACS 2020-2024: 39,555
Median household income
$85,595
±$6,424 (90% margin)
North Dakota: $76,657
Median home value
$284,800
±$24,004 (90% margin)
North Dakota: $249,900
Median gross rent
$1,123
±$56 (90% margin)
North Dakota: $954
How many people live in Williams County, and is it growing?
The 2020 Census counted 40,950 residents in Williams County. The Census Bureau estimates 41,767 for July 1, 2025, up 2.0% since 2020, slower than North Dakota (+2.6%). The 2020-2024 American Community Survey puts the population at 39,555 over 2,078 square miles of land.
| Measure | Williams County | North Dakota | Change since 2015-2019 |
|---|---|---|---|
| Total population | 39,555 | 784,841 | +4,347 |
| Households | 15,154±764 | 331,063 | no clear change |
| Average household size | 2.57±0.13 | 2.28 | no clear change |
| Housing units | 20,376±57 | 377,281 | +1,054 |
Williams County's population since 2000
From 19,761 in 2000 to 41,767 in 2025: up 111.4%. The 2000, 2010 and 2020 figures are census counts. The 2005 figure is the Census Bureau's intercensal estimate, revised to fit the 2000 and 2010 counts and drawn on 2010 boundaries; 2015 and 2025 are July 1 estimates made from the census before them.
Source: The 2000, 2010 and 2020 Census counts and the Census Bureau's population estimates (intercensal 2000-2010, Vintage 2020, Vintage 2025) · Census population estimates
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); PEP Vintage 2025 (CO-EST2025); 2020 Census · Check it at data.census.gov
What cities and towns are in Williams County?
Williams County holds 63 places: 8 cities, villages and boroughs (incorporated places), 51 towns and townships (county subdivisions with their own government) and 4 census-designated places. The largest is Williston with 29,522 residents (2025 estimate). Places that cross a county line are listed with the share of their 2020 residents who live in this county.
| Williston | 29,160 | $79,381 |
|---|---|---|
| Tioga | 2,202 | $66,181 |
| Missouri Ridge TownshipGEOID 3810553660 | 1,504 | $124,864 |
| Williston TownshipGEOID 3810586260 | 1,086 | $250,000 or more |
| Pherrin TownshipGEOID 3810562140 | 825 | $117,339 |
| Stony Creek TownshipGEOID 3810576340 | 761 | $100,192 |
| Ray | 740 | $72,031 |
| Trenton Township | 648 | $108,281 |
| TrentonGEOID 3879460 | 488 | $107,417 |
| Round Prairie TownshipGEOID 3810568700 | 431 | $168,000 |
| Judson TownshipGEOID 3810541260 | 333 | not published |
| Truax TownshipGEOID 3810579740 | 243 | $137,115 |
| GrenoraGEOID 3833500 | 221 | not published |
| Springbrook TownshipGEOID 3810574820 | 212 | $182,143 |
| Pleasant Valley TownshipGEOID 3810563260 | 180 | $100,250 |
| Twelve Mile TownshipGEOID 3810580220 | 117 | $119,485 |
| Buford TownshipGEOID 3810510540 | 116 | $149,375 |
| WildroseGEOID 3886020 | 115 | $95,536 |
| Long CreekGEOID 3847796 | 104 | not published |
| Hardscrabble TownshipGEOID 3810535340 | 100 | $71,250 |
| Mont TownshipGEOID 3810553940 | 98 | not published |
| Blacktail TownshipGEOID 3810507460 | 87 | not published |
| Tioga TownshipGEOID 3810578980 | 87 | $66,406 |
| EppingGEOID 3824540 | 84 | $67,174 |
| Equality TownshipGEOID 3810524580 | 83 | not published |
| West Bank TownshipGEOID 3810584580 | 81 | $132,813 |
| Sauk Valley TownshipGEOID 3810570900 | 77 | $138,683 |
| BlacktailGEOID 3807456 | 61 | not published |
| Scorio TownshipGEOID 3810571300 | 61 | $103,594 |
| Marshall TownshipGEOID 3810550980 | 59 | not published |
| AlamoGEOID 3800940 | 53 | $58,333 |
| Tyrone TownshipGEOID 3810580620 | 53 | not published |
| Wheelock TownshipGEOID 3810585340 | 51 | not published |
| Dry Fork TownshipGEOID 3810520580 | 50 | not published |
| Athens TownshipGEOID 3810503620 | 48 | not published |
| McGregorGEOID 3849220 | 47 | not published |
| Hazel TownshipGEOID 3810536620 | 47 | not published |
| Hebron TownshipGEOID 3810536900 | 45 | not published |
| Lindahl TownshipGEOID 3810546900 | 43 | not published |
| Good Luck TownshipGEOID 3810531460 | 40 | not published |
| Bonetraill TownshipGEOID 3810508260 | 40 | not published |
| Ellisville TownshipGEOID 3810523420 | 40 | not published |
| Champion TownshipGEOID 3810513460 | 38 | not published |
| SpringbrookGEOID 3874780 | 37 | not published |
| View TownshipGEOID 3810582100 | 36 | not published |
| Brooklyn TownshipGEOID 3810509820 | 35 | not published |
| South Meadow TownshipGEOID 3810574260 | 35 | not published |
| Strandahl TownshipGEOID 3810576460 | 31 | not published |
| Blue Ridge TownshipGEOID 3810508100 | 31 | not published |
| Barr Butte TownshipGEOID 3810505020 | 29 | not published |
| Big Stone TownshipGEOID 3810506900 | 28 | not published |
| Farmvale TownshipGEOID 3810525900 | 27 | $250,000 or more |
| Winner TownshipGEOID 3810586860 | 25 | not published |
| East Fork Township, Williams CountyGEOID 3810521660 | 25 | not published |
| Grenora TownshipGEOID 3810533540 | 22 | not published |
| Big Meadow TownshipGEOID 3810506860 | 16 | not published |
| Orthell TownshipGEOID 3810559860 | 16 | not published |
| Dublin TownshipGEOID 3810520660 | 13 | not published |
| Bull Butte TownshipGEOID 3810510620 | 11 | not published |
| Oliver TownshipGEOID 3810559260 | 10 | not published |
| Climax TownshipGEOID 3810514860 | 9 | $103,602 |
| Rainbow TownshipGEOID 3810565020 | 8 | not published |
| Rock Island TownshipGEOID 3810567460 | 8 | not published |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 place-by-county parts · Check it at data.census.gov
Who lives in Williams County?
The median resident of Williams County is 31.8 years old; 30.2% are under 18 and 9.9% are 65 or older. The largest group is non-Hispanic white residents at 75.7%, then Hispanic or Latino residents (of any race) at 10.2%. 8.5% of residents were born outside the United States.
| Measure | Williams County | North Dakota | Change since 2015-2019 |
|---|---|---|---|
| Median age | 31.8±0.5 | 35.9 | no clear change |
| Under 18 years | 30.2%±0.1 pts | 23.5% | – |
| 65 years and over | 9.9%±0.8 pts | 16.5% | – |
| Hispanic or Latino (any race) | 10.2% | 4.7% | +2.5 pts |
| White alone, not Hispanic | 75.7%±0.4 pts | 81.7% | −3.8 pts |
| Black or African American alone, not Hispanic | 4.7%±0.7 pts | 3.3% | no clear change |
| Asian alone, not Hispanic | 1.2%±0.4 pts | 1.6% | no clear change |
| American Indian and Alaska Native alone, not Hispanic | 2.6%±0.8 pts | 4.2% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.1%±0.1 pts | 0.1% | – |
| Two or more races, not Hispanic | 5.2%±1.1 pts | 4.0% | – |
| Some other race alone, not Hispanic | 0.3%±0.2 pts | 0.3% | – |
| Born outside the United States | 8.5%±1.7 pts | 4.7% | +2.4 pts |
| Speak a language other than English at home (age 5+) | 11.5%±2.3 pts | 6.7% | – |
| Civilian veterans (age 18+) | 8.0%±2.0 pts | 7.1% | – |
| With a disability | 11.1%±2.2 pts | 12.0% | – |
| No health insurance coverage | 11.5%±2.7 pts | 6.5% | no clear change |
| High school graduate or higher (age 25+) | 93.1%±2.5 pts | 94.0% | – |
| Bachelor's degree or higher (age 25+) | 24.4%±2.8 pts | 32.7% | no clear change |
| Graduate or professional degree (age 25+) | 7.1%±1.4 pts | 9.7% | – |
| Moved from another state in the past year | 4.7%±2.0 pts | 4.2% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profiles DP02, DP05) · Check it at data.census.gov
What do households in Williams County earn?
Half of Williams County's 15,154 households earn less than $85,595 a year (±$6,424), against $76,657 in North Dakota. In 2015-2019 the median was $107,269 in 2024 dollars, so it fell by $21,674 after inflation. 8.6% of residents live below the poverty line.
| Measure | Williams County | North Dakota | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $85,595±$6,424 | $76,657 | −$21,674 |
| Mean household income | $117,741±$7,252 | $101,793 | – |
| Per capita income | $44,320±$2,818 | $43,389 | −$10,120 |
| People below the poverty line | 8.6%±2.3 pts | 10.8% | no clear change |
| Children under 18 below the poverty line | 10.2%±4.7 pts | 11.1% | no clear change |
| Households receiving SNAP | 6.0%±2.0 pts | 6.6% | – |
| Households with a broadband subscription | 92.3%±2.1 pts | 88.7% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What does housing cost in Williams County?
Owners occupy 53.0% of Williams County's occupied homes and renters 47.0%. The median owner-occupied home is valued at $284,800 by its owner (±$24,004). The median renter pays $1,123 a month including utilities, and 19.0% of renters pay 35% or more of their income on rent.
| Measure | Williams County | North Dakota | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $284,800±$24,004 | $249,900 | no clear change |
| Median gross rent | $1,123±$56 | $954 | no clear change |
| Renters paying 35% or more of income on rent | 19.0%±6.3 pts | 31.1% | no clear change |
| Median monthly owner costs, with a mortgage | $2,008±$180 | $1,762 | – |
| Owner-occupied homes | 53.0%±4.0 pts | 62.9% | no clear change |
| Housing units | 20,376±57 | 377,281 | +1,054 |
| Homeowner vacancy rate | 2.5%±1.6 pts | 1.2% | – |
| Rental vacancy rate | 25.3%±6.8 pts | 8.3% | – |
| Single-family detached homes | 43.2%±2.8 pts | 56.7% | – |
| Mobile homes | 8.6%±2.0 pts | 6.6% | – |
| Built 2020 or later | 1.4%±0.9 pts | 1.8% | – |
| Built 1939 or earlier | 8.3%±2.3 pts | 11.5% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP04) · Check it at data.census.gov
How many new homes is Williams County building?
Builders took permits for 145 new housing units across Williams County in 2025 (145 single-family), 3.5 per 1,000 residents.
Source: Building Permits Survey, annual county files 2019-2025, U.S. Census Bureau · Census Building Permits Survey
How do people in Williams County get to work?
81.7% of Williams County's workers drive alone and 4.0% work from home. The average trip to work takes 18.7 minutes. The unemployment rate in 2020-2024 averaged 4.4%.
| Measure | Williams County | North Dakota | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 73.4%±2.5 pts | 68.6% | – |
| Unemployment rate | 4.4%±1.6 pts | 2.8% | +2.2 pts |
| Drove alone to work | 81.7%±3.6 pts | 77.9% | – |
| Carpooled | 9.9%±2.7 pts | 8.8% | – |
| Public transportation | 0.3%±0.4 pts | 0.3% | – |
| Walked | 3.7%±2.3 pts | 3.2% | – |
| Worked from home | 4.0%±1.6 pts | 8.1% | no clear change |
| Mean travel time to work | 18.7 min±1.6 | 17.9 min | no clear change |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What are Williams County's census tracts?
Williams County is divided into 8 census tracts. Among those with a reliable estimate, median household income runs from $73,727 (Tract 9537.01) to $119,783 (Tract 9539).
| Tract 953438105953400 | 2,417±477 | $81,250 |
|---|---|---|
| Tract 953538105953500 | 3,373±711 | $101,729 |
| Tract 953638105953600 | 3,206±634 | $100,564 |
| Tract 9537.0138105953701 | 11,668±1,192 | $73,727 |
| Tract 9537.0238105953702 | 6,923±1,479 | $94,511 |
| Tract 953838105953800 | 2,410±512 | $82,303 |
| Tract 953938105953900 | 3,843±603 | $119,783 |
| Tract 954138105954100 | 5,715±977 | $83,155 |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) · Check it at data.census.gov
How does Williams County compare with North Dakota's other counties?
| Measure | Rank |
|---|---|
| Population | 5th of 53 |
| Growth 2020-2025 | 10th of 53 |
| Residents per square mile | 6th of 53 |
| Median household income | 9th of 53 |
| Median home value | 5th of 53 |
| Median gross rent | 2nd of 53 |
| Poverty rate | 41st of 53 |
| Bachelor's degree or higher | 30th of 53 |
| Median age | 50th of 53 |
Source: PlainCities ranks from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) and PEP Vintage 2025 · How ranks are computed
How these figures are made: methodology and release checks · reading a margin of error · every state · corrections
Not on this page: crime, weather and schools for Williams County are other agencies' records. Crime: the FBI's Crime Data Explorer · climate: NOAA's U.S. Climate Normals · schools: the National Center for Education Statistics' school search.