Williams County, ND demographics:
population, income, and more

Total population
39,555
0.5% year-over-year change
Median household income
$85,595/yr
-5.1% year-over-year change
Housing units
20,376
0.4% year-over-year change

Williams County population

How many people live in Williams County

Williams County is home to 39,555 residents, according to the most recent Census data. Gender-wise, 52.9% of Williams County locals are male, and 47.1% are female.

Total population
39,555
0.5% year-over-year change
Gender ratio
Male
52.9%
20,908
Female
47.1%
18,647
Value Percent YoY change
Male 20,908 52.9% 0.1%
Female 18,647 47.1% 0.9%
A higher population often means more rental variety and livelier areas. The gender balance—how many men live here compared to women—can reveal a lot about the community and the lifestyles of its residents. Use this info to get a sense of the area's pace and personality.

Age demographics

The median age in Williams County is 32, with the population distributed as follows: about 26.3% are children under 15, then 11.7% are in the 15 to 24 age group. Adults between 25 and 44 make up 34.1% of the population, while another 18% fall into the 45 to 64 bracket. Finally, around 10% are 65 or older.

Median age
31.8
Age breakdown
Under 15
26.3%
15 to 24
11.7%
25 to 44
34.1%
45 to 64
18%
Over 65
10%
Value Percent YoY change
Under 15 10,387 26.3% 0.2%
15 to 24 4,627 11.7% 6.3%
25 to 44 13,471 34.1% 2.0%
45 to 64 7,136 18% -5.6%
Over 65 3,934 10% 1.2%
The age composition helps you get insight into who lives in the area. A younger population might mean a more active, fast-paced vibe, while an older one could suggest a quieter, slower lifestyle. If there's a balanced makeup, you’re likely to find a variety of services, housing types, and community spaces that cater to different life stages.

Racial makeup

In Williams County, 90% of the population are US-born citizens, while 4.9% have gained naturalized citizenship. At the same time, 5% of residents are non-citizens. As for race, 79.9% of locals are Caucasian, 4.7% are African American and 1.2% have Asian roots. Another 3.1% are Indigenous American, 0.1% are Pacific Islanders, while 3.2% identify as another race. There’s also a share of 7.8% that includes residents with two or more races.

Citizenship
U.S.-born citizens
90%
Non-U.S.-born citizens
4.9%
Non-citizens
5%
Value Percent YoY change
U.S.-born citizens 35,619 90% -1.1%
Non-U.S.-born citizens 1,938 4.9% 13.3%
Non-citizens 1,998 5% 22.0%
Racial breakdown
White
79.9%
Black or African American
4.7%
American Indian and Alaska Native
3.1%
Asian
1.2%
Native Hawaiian and other Pacific Islander
0.1%
Two or more races
7.8%
Other
3.2%
Value Percent
White 31,591 79.9%
Black or African American 1,858 4.7%
American Indian and Alaska Native 1,218 3.1%
Asian 481 1.2%
Native Hawaiian and other Pacific Islander 50 0.1%
Two or more races 3,078 7.8%
Other 1,279 3.2%

Households in Williams County

A peek inside Williams County households

Williams County has 15,154 households, with an average of 3 members in each. Of these, 63.3% are families, while the remaining 36.7% are made up of individuals living alone or with non-relatives, such as roommates.

Households stats

Total households
15,154
-1.0% year-over-year change
Average people per household
3
Non-family households
5,557
Family households
9,597
Value Percent YoY change
Non-family households 5,557 36.7% -5.1%
Family households 9,597 63.3% 1.5%
The mix between family and non-family households gives a glimpse into daily life. A higher percentage of families might mean more parks and schools, while more non-family setups can mean flexible housing and diverse living styles. For renters, this can signal what kinds of homes are common and can help you figure out if the area matches your lifestyle.

Housing in Williams County

The housing landscape of Williams County

Williams County's housing consists of 20,376 units, with 43.2% being detached single-family homes ideal for those wanting space. Attached options, including duplexes and townhouses, make up 5.4% and offer a more compact, shared living style. Then there are the multifamily buildings in the area, and for those seeking flexibility, non-traditional options like mobile homes account for 8.6% of the housing landscape.

Housing units
20,376
0.4% year-over-year change
Housing types
Value Percent
1 unit, detached 8,810 43.2%
1 unit, attached 1,106 5.4%
2 units 305 1.5%
3 or 4 units 635 3.1%
5 to 9 units 522 2.6%
10 to 19 units 1,170 5.7%
20 to 49 units 4,957 24.3%
50 or more units 1,067 5.2%
Mobile home 1,748 8.6%
Boat, RV, van, etc. 56 0.3%
Homes built since 2020
282
62.1% year-over-year change

The age of buildings in Williams County

In Williams County, the median construction year is 2001. About 8.3% of homes were built before the 1940s, with another 2.4% going up by 1949. Most development happened in the second half of the 20th century. Then, 10.2% of homes were added from 2000 to 2009, 39.3% between 2010 and 2019, and 1.4% are part of the newest wave of development.

Construction year breakdown by decade
Value Percent YoY change
Built in 1939 or earlier 1,694 8.3% -7.8%
Built between 1940 and 1949 499 2.4% -18.2%
Built between 1950 and 1959 2,246 11% 1.9%
Built between 1960 and 1969 1,182 5.8% 0.2%
Built between 1970 and 1979 1,920 9.4% -7.4%
Built between 1980 and 1989 1,846 9.1% -9.2%
Built between 1990 and 1999 618 3% -17.5%
Built between 2000 and 2009 2,085 10.2% 25.5%
Built between 2010 and 2019 8,004 39.3% 3.0%
Built in 2020 or later 282 1.4% 62.1%
As a renter, knowing when homes were built helps you understand the potential condition and design of rental units. Newer builds may have more contemporary layouts, while older homes can offer character or larger lots, depending on the area.

Williams County occupancy rates

Out of the 15,154 occupied housing units in Williams County, 53% are owner-occupied, while 47% are lived in by tenants. Meanwhile, 25.6% of all homes on the local market sit vacant.

Occupied housing units
15,154
-1.0% year-over-year change
Occupancy breakdown
Renter occupied
7,125
Owner occupied
8,029
Value Percent YoY
change
Renter occupied 7,125 47% 8.8%
Owner occupied 8,029 53% -8.4%
Unoccupied housing units
25.6%
Unoccupied housing units refer to homes that are currently without residents—whether they're waiting for renters or owners, used seasonally, or simply unclaimed. A higher share of empty homes may mean more housing availability, while a low number can reflect a tighter market with more competition. This, along with the renter-vs.-owner mix, helps paint a clearer picture of what types of housing and services are likely to be available in the area.

Williams County housing costs

Housing costs in Williams County come to a median of $1,081 per month, while tenants specifically pay a median gross rent of $1,123.

Median housing costs per month
$1,081/month
This figure sums up typical monthly housing costs for all households in the area. If you own, it includes mortgage payments in addition to property taxes, insurance and HOA fees. If you rent, it accounts for rent plus extras like utilities. It’s useful for seeing how local living expenses stack up compared to other places.
Median gross rent in Williams County
$1,123/month
Gross rent gives a more complete look at what renters actually pay, including not just base rent, but also utilities and fees. It’s a key number for evaluating rental affordability in your area of interest and understanding how it compares to nearby locations.

Education in Williams County

Williams County education at a glance

About 40.9% of the population in Williams County went to high school, while 20.2% pursued college studies. Another 14.7% earned an associate degree and 16.2% hold a bachelor’s. Meanwhile, 6.3% went even further, earning a master’s or doctorate.

Education level
Value Percent YoY change
No high school 498 1.8% -18.2%
High school diploma 11,295 40.9% -2.6%
College diploma 5,565 20.2% 5.4%
Associate degree 4,053 14.7% -1.9%
Bachelor's degree 4,477 16.2% 16.3%
Graduate degree 1,733 6.3% -17.0%
A community’s education mix can offer insights into the local economy and housing market. Higher levels of education often align with more job opportunities and stable incomes, which can increase demand for homes and influence both rent prices and rental availability.

Income in Williams County

How much people earn in Williams County

The average annual household income in Williams County was $117,741 in 2024, the most recent annual data available, according to the U.S. Census Bureau. This marked a -1.6% change from the previous year. At the same time, the median income stood at $85,595, reflecting a -5.1% shift over the same period.

Average household income in Williams County
$117,741/year
-1.6% year-over-year change
Median household income in Williams County
$85,595/year
-5.1% year-over-year change

Williams County income by age

In Williams County, households led by residents aged 25 to 44 — usually in the early to mid stages of their careers — have a median income of $84,572. Those with someone between 45 and 64 in charge, often well established professionally, earn $108,098 overall. Younger households, where the main provider is under 25 and just starting out, report a median income of $82,891, while those led by someone over 65, many of whom may be retired, have about $65,263 in earnings. Overall, 91.4% of the locals in this community live above the poverty line.

Income breakdown by age
Value YoY change
Under 25 $82,891 -9.6%
25 - 44 $84,572 -6.3%
45 - 64 $108,098 2.5%
Over 65 $65,263 40.3%
Above poverty level
35,480
Below poverty level
3,358
Value Percent YoY
change
Above poverty level 35,480 91.4% 0.9%
Below poverty level 3,358 8.6% -1.1%

Employment in Williams County

Workforce and job types in Williams County

The job market in Williams County is powered by 19,960 working residents, spread across a range of industries and roles. 71.7% of the working population are employed in professional or administrative positions, while 28.3% are in hands-on or service-based jobs. Also, 12% run their own businesses, 67.6% are employed by private companies, and 14.8% work in the public sector.

Workforce demographics

Working population
19,960
-0.8% year-over-year change
White collar
14,318
Blue collar
5,642
Value Percent YoY change
White collar 14,318 71.7% 7.9%
Blue collar 5,642 28.3% -17.7%
Employer type
Self employees
12%
Private companies
67.6%
Governmental workers
14.8%
Not for profit companies
5.6%
Value Percent YoY change
Self employees 2,405 12% 12.2%
Private companies 13,485 67.6% -2.2%
Governmental workers 2,959 14.8% 3.5%
Not for profit companies 1,111 5.6% -16.3%
Unemployment rate
4.4%
73.0% year-over-year change

Available workforce

The unemployment rate in Williams County stands at 4.4%, representing the share of the workforce currently without a job and actively looking for one.

For renters, the unemployment rate helps paint a picture of job security and financial stability in the area. Rates around 4% to 5% are considered typical. A lower-than-average rate might suggest strong job prospects and a thriving local economy, while a higher rate could hint at fewer opportunities—both useful to consider when planning a move.

Transportation in Williams County

How people get around in Williams County

Commuting methods vary: 91.5% of residents travel by personal vehicle and 3.7% prefer to walk, while the remaining share relies on public transit or on two wheelers to get from A to B.

Means of transportation
Value Percent YoY change
Car 18,081 91.5% -1.3%
Subway or elevated 32 0.2% N/A
Ferryboat 21 0.1% 23.5%
Bicycle 6 0% 100.0%
Walk 732 3.7% 8.6%
Understanding how locals get to work can help you plan your own routine. High car usage might mean you’ll need a vehicle, while strong public transit or walkability could save you the hassle. Commute times also play a big role in quality of life—shorter trips can give you more time for the things you enjoy.

What is the median and average household income in Williams County by zipcode?

Zipcode Population Number of households Median income Average income
58755 133 76 $138,705 $141,458
58795 414 123 $117,344 $157,622
58801 34,277 12,983 $84,702 $118,034
58830 66 37 $54,063 $107,086
58843 676 229 $118,750 $174,752
58845 584 269 $91,806 $78,192
58849 1,101 473 $82,250 $122,998
58852 2,087 870 $80,595 $122,764
58853 354 131 $107,969 $133,889
58856 211 82 $104,688 $113,840

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FAQs about Williams County demographics 

What is the total population of Williams County?

Williams County has a total population of 39,555 residents, according to the latest release from the U.S. Census Bureau: the 2019-2023 American Community Survey (ACS) 5-year estimates. This figure changed by +0.5% compared to a year ago.

What is the gender ratio in Williams County?

The gender ratio in Williams County is as follows:
  • 52.9% males (20,908 residents)
  • 47.1% females (18,647 residents)

What is the median age in Williams County?

The median age in Williams County is 31.8.

What is the age distribution of the population in Williams County?

The age distribution in Williams County is as follows:
  • Under 15: 26.3% (10,387 residents)
  • Ages 15-24: 11.7% (4,627 residents)
  • Ages 25-44: 34.1% (13,471 residents)
  • Ages 45-64: 18% (7,136 residents)
  • Over 65: 10% (3,934 residents)

What is the racial and ethnic makeup of Williams County?

The racial and ethnic makeup of Williams County is as follows:
  • White: 79.9% (31,591 residents)
  • Black or African American: 4.7% (1,858 residents)
  • American Indian and Alaska Native: 3.1% (1,218 residents)
  • Asian: 1.2% (481 residents)
  • Native Hawaiian and Other Pacific Islander: 0.1% (50 residents)
  • Two or More Races: 7.8% (3,078 residents)
  • Other: 3.2% (1,279 residents)

What percentage of the population in Williams County are U.S.-born citizens?

U.S.-born citizens represent 90% of the population in Williams County.

How many housing units are there in Williams County?

There are 20,376 housing units in Williams County, reflecting a +0.4% change compared to the previous year, according to the latest data from the U.S. Census Bureau.

How many households are in Williams County and what is the average household size?

Williams County has a total of 15,154 households, with an average of 3 people in each.

What is the median household income in Williams County?

Williams County has a median household income of $85,595, representing a -5.1% shift from the previous year, according to the U.S. Census Bureau.

What is the employment rate and job market overview for Williams County?

The employment rate is 95.6% in Williams County, with a workforce of 19,960 residents. Here’s a detailed breakdown of the local job market:

Job types:
  • White-collar workers: 71.7% (14,318 residents)
  • Blue-collar workers: 28.3% (5,642 residents)

Places of employment:
  • Self-employed: 12% (2,405 residents)
  • Private companies: 67.6% (13,485 residents)
  • Governmental workers: 14.8% (2,959 residents)
  • Not-for-profit companies: 5.6% (1,111 residents)

Data source & methodology

The demographic data on this page was sourced from the latest U.S. Census Bureau release—the 2019–2023 American Community Survey (ACS) 5-year estimates.

The information, issued annually, is compiled and published by the Point2Homes Research Team as soon as new data becomes available.

No representation, guarantee, or warranty is made concerning the accuracy or completeness of modified or aggregated information for particular areas.

Page last updated: September 2025