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

Total population
3,358
-0.4% year-over-year change
Median household income
$87,831/yr
5.3% year-over-year change
Housing units
1,775
-0.4% year-over-year change

Foster County population

How many people live in Foster County

Foster County is home to 3,358 residents, according to the most recent Census data. Gender-wise, 51.9% of Foster County locals are male, and 48.1% are female.

Total population
3,358
-0.4% year-over-year change
Gender ratio
Male
51.9%
1,742
Female
48.1%
1,616
Value Percent YoY change
Male 1,742 51.9% 1.0%
Female 1,616 48.1% -1.9%
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 Foster County is 43, with the population distributed as follows: about 17.6% are children under 15, then 7.8% are in the 15 to 24 age group. Adults between 25 and 44 make up 25.2% of the population, while another 25.3% fall into the 45 to 64 bracket. Finally, around 24.1% are 65 or older.

Median age
43.4
Age breakdown
Under 15
17.6%
15 to 24
7.8%
25 to 44
25.2%
45 to 64
25.3%
Over 65
24.1%
Value Percent YoY change
Under 15 590 17.6% -0.5%
15 to 24 262 7.8% -9.0%
25 to 44 846 25.2% 3.7%
45 to 64 850 25.3% -5.2%
Over 65 810 24.1% 4.1%
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 Foster County, 97.4% of the population are US-born citizens, while 1.1% have gained naturalized citizenship. At the same time, 1.5% of residents are non-citizens. As for race, 94.2% of locals are Caucasian, 0.3% are African American and 1.8% have Asian roots. There’s also a share of 2.9% that includes residents with two or more races.

Citizenship
U.S.-born citizens
97.4%
Non-U.S.-born citizens
1.1%
Non-citizens
1.5%
Value Percent YoY change
U.S.-born citizens 3,271 97.4% -1.6%
Non-U.S.-born citizens 36 1.1% 800.0%
Non-citizens 51 1.5% 13.3%
Racial breakdown
White
94.2%
Black or African American
0.3%
American Indian and Alaska Native
0.2%
Asian
1.8%
Native Hawaiian and other Pacific Islander
0%
Two or more races
2.9%
Other
0.6%
Value Percent
White 3,165 94.2%
Black or African American 10 0.3%
American Indian and Alaska Native 5 0.2%
Asian 61 1.8%
Two or more races 96 2.9%
Other 21 0.6%

Households in Foster County

A peek inside Foster County households

Foster County has 1,531 households, with an average of 2 members in each. Of these, 61.5% are families, while the remaining 38.5% are made up of individuals living alone or with non-relatives, such as roommates.

Households stats

Total households
1,531
1.1% year-over-year change
Average people per household
2
Non-family households
590
Family households
941
Value Percent YoY change
Non-family households 590 38.5% -1.8%
Family households 941 61.5% 3.0%
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 Foster County

The housing landscape of Foster County

Foster County's housing consists of 1,775 units, with 79.4% being detached single-family homes ideal for those wanting space. Attached options, including duplexes and townhouses, make up 1.1% 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 5% of the housing landscape.

Housing units
1,775
-0.4% year-over-year change
Housing types
Value Percent
1 unit, detached 1,410 79.4%
1 unit, attached 19 1.1%
2 units 36 2%
3 or 4 units 66 3.7%
5 to 9 units 75 4.2%
10 to 19 units 81 4.6%
Mobile home 88 5%
Homes built since 2020
0
% year-over-year change

The age of buildings in Foster County

In Foster County, the median construction year is 1973. About 17.2% of homes were built before the 1940s, with another 5.9% going up by 1949. Most development happened in the second half of the 20th century.

Construction year breakdown by decade
Value Percent YoY change
Built in 1939 or earlier 305 17.2% 4.1%
Built between 1940 and 1949 105 5.9% -11.0%
Built between 1950 and 1959 148 8.3% -19.1%
Built between 1960 and 1969 215 12.1% -18.9%
Built between 1970 and 1979 407 22.9% 0.5%
Built between 1980 and 1989 143 8.1% 76.5%
Built between 1990 and 1999 102 5.8% 8.5%
Built between 2000 and 2009 170 9.6% 29.8%
Built between 2010 and 2019 180 10.1% -15.1%
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.

Foster County occupancy rates

Out of the 1,531 occupied housing units in Foster County, 79.7% are owner-occupied, while 20.3% are lived in by tenants. Meanwhile, 13.7% of all homes on the local market sit vacant.

Occupied housing units
1,531
1.1% year-over-year change
Occupancy breakdown
Renter occupied
311
Owner occupied
1,220
Value Percent YoY
change
Renter occupied 311 20.3% -9.1%
Owner occupied 1,220 79.7% 4.0%
Unoccupied housing units
13.7%
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.

Foster County housing costs

Housing costs in Foster County come to a median of $754 per month, while tenants specifically pay a median gross rent of $780.

Median housing costs per month
$754/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 Foster County
$780/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 Foster County

Foster County education at a glance

About 29.1% of the population in Foster County went to high school, while 24.3% pursued college studies. Another 16.6% earned an associate degree and 22.5% hold a bachelor’s. Meanwhile, 5.3% went even further, earning a master’s or doctorate.

Education level
Value Percent YoY change
No high school 56 2.1% -6.7%
High school diploma 764 29.1% 4.2%
College diploma 639 24.3% 0.9%
Associate degree 437 16.6% -12.1%
Bachelor's degree 592 22.5% -1.2%
Graduate degree 139 5.3% 23.0%
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 Foster County

How much people earn in Foster County

The average annual household income in Foster County was $103,534 in 2024, the most recent annual data available, according to the U.S. Census Bureau. This marked a +9.4% change from the previous year. At the same time, the median income stood at $87,831, reflecting a +5.3% shift over the same period.

Average household income in Foster County
$103,534/year
9.4% year-over-year change
Median household income in Foster County
$87,831/year
5.3% year-over-year change

Foster County income by age

In Foster County, households led by residents aged 25 to 44 — usually in the early to mid stages of their careers — have a median income of $115,179. Those with someone between 45 and 64 in charge, often well established professionally, earn $90,625 overall. Younger households, where the main provider is under 25 and just starting out, report a median income of $68,774, while those led by someone over 65, many of whom may be retired, have about $72,083 in earnings. Overall, 91.2% of the locals in this community live above the poverty line.

Income breakdown by age
Value YoY change
Under 25 $68,774 4.6%
25 - 44 $115,179 7.7%
45 - 64 $90,625 -6.5%
Over 65 $72,083 13.9%
Above poverty level
2,951
Below poverty level
286
Value Percent YoY
change
Above poverty level 2,951 91.2% 0.0%
Below poverty level 286 8.8% -4.3%

Employment in Foster County

Workforce and job types in Foster County

The job market in Foster County is powered by 1,835 working residents, spread across a range of industries and roles. 77% of the working population are employed in professional or administrative positions, while 23% are in hands-on or service-based jobs. Also, 21% run their own businesses, 50.5% are employed by private companies, and 16% work in the public sector.

Workforce demographics

Working population
1,835
-0.7% year-over-year change
White collar
1,413
Blue collar
422
Value Percent YoY change
White collar 1,413 77% 1.4%
Blue collar 422 23% -7.2%
Employer type
Self employees
21%
Private companies
50.5%
Governmental workers
16%
Not for profit companies
12.4%
Value Percent YoY change
Self employees 386 21% 10.9%
Private companies 927 50.5% -7.7%
Governmental workers 294 16% 14.8%
Not for profit companies 228 12.4% -5.0%
Unemployment rate
1.0%
800.0% year-over-year change

Available workforce

The unemployment rate in Foster County stands at 1%, 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 Foster County

How people get around in Foster County

In Foster County, the average commute time is 13 minutes. Commuting methods vary: 88% of residents travel by personal vehicle and 2.3% prefer to walk, while the remaining share relies on public transit or on two wheelers to get from A to B.

Commute time
13 min
-6.5% year-over-year change
Means of transportation
Value Percent YoY change
Car 1,604 88% -0.9%
Walk 42 2.3% 20.0%
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 Foster County by zipcode?

Zipcode Population Number of households Median income Average income
58443 152 78 $73,500 $166,194
58445 145 57 $72,250 $78,254
58455 336 110 $76,500 $94,526
58464 270 123 $55,938 $70,798
58484 93 44 $170,500 $185,391
58421 2,969 1,353 $89,097 $100,198

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FAQs about Foster County demographics 

What is the total population of Foster County?

Foster County has a total population of 3,358 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 -0.4% compared to a year ago.

What is the gender ratio in Foster County?

The gender ratio in Foster County is as follows:
  • 51.9% males (1,742 residents)
  • 48.1% females (1,616 residents)

What is the median age in Foster County?

The median age in Foster County is 43.4.

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

The age distribution in Foster County is as follows:
  • Under 15: 17.6% (590 residents)
  • Ages 15-24: 7.8% (262 residents)
  • Ages 25-44: 25.2% (846 residents)
  • Ages 45-64: 25.3% (850 residents)
  • Over 65: 24.1% (810 residents)

What is the racial and ethnic makeup of Foster County?

The racial and ethnic makeup of Foster County is as follows:
  • White: 94.2% (3,165 residents)
  • Black or African American: 0.3% (10 residents)
  • American Indian and Alaska Native: 0.2% (5 residents)
  • Asian: 1.8% (61 residents)
  • Native Hawaiian and Other Pacific Islander: 0% (0 residents)
  • Two or More Races: 2.9% (96 residents)
  • Other: 0.6% (21 residents)

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

U.S.-born citizens represent 97.4% of the population in Foster County.

How many housing units are there in Foster County?

There are 1,775 housing units in Foster 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 Foster County and what is the average household size?

Foster County has a total of 1,531 households, with an average of 2 people in each.

What is the median household income in Foster County?

Foster County has a median household income of $87,831, representing a +5.3% shift from the previous year, according to the U.S. Census Bureau.

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

The employment rate is 99% in Foster County, with a workforce of 1,835 residents. Here’s a detailed breakdown of the local job market:

Job types:
  • White-collar workers: 77% (1,413 residents)
  • Blue-collar workers: 23% (422 residents)

Places of employment:
  • Self-employed: 21% (386 residents)
  • Private companies: 50.5% (927 residents)
  • Governmental workers: 16% (294 residents)
  • Not-for-profit companies: 12.4% (228 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