Foster County

Foster County has 3,358 residents across 3 ZIP codes with their own report. Median household income is $87,831, 15% above the North Dakota figure. The typical owner-occupied home is valued at $167,500, and 29% of adults 25 and over hold a bachelor’s degree or higher.

County · ACS 2020–2024 · Updated October 24, 2026

3,358residentsACS 2020–2024

$87,831median household incomeNorth Dakota: $77K

$167,500median home valueowner-occupied homes

93%of households have broadbandhome internet subscription

Foster County in North DakotaZIP codes in Foster County highlighted; the rest of North Dakota in grey

Map of North Dakota with Foster County highlighted

Sources: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates · U.S. Census Bureau, 2024 Gazetteer and 2020 ZCTA relationship files

All 3 ZIP codes.

Colour shows where each zip code sits among the others in the table, from lowest to highest.

ZIP code	Residents	Household income	Home value	Owners	Bachelor's+	Broadband	Commute
58421	2,969	$89K	$171K	79%	30%	93%	14 min
58443	152	$74K	$121K	89%	12%	89%	20 min
58445	145	$72K	$109K	98%	25%	100%	29 min

Source: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates

People.

3,358 residents in 1,531 households, next to the North Dakota figure.

22%

under 18

17%

aged 18–34

24%

aged 65 and over

33%

of households are people living alone

54%

of households are married couples

Source: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates

Homes.

1,775 housing units; the median owner-occupied home is valued at $167,500 (±$27,475).

80%

of households own their home

79%

of homes are detached single-family houses

are in buildings with 5 or more units

are mobile homes

14%

of housing units are vacant

$780

median gross rent a month

When homes were built

2020 or later0%

2010–201910%

2000–200910%

1990–19996%

1980–19898%

1970–197923%

1960–196912%

1950–19598%

1940–19496%

1939 or earlier17%

Source: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates

Income and work.

Household income and work, in 2024 dollars; median household income ±$10,924.

$87,831

median household income

8.8%

of people live below the poverty line

1.0%

unemployment rate

29%

of adults 25+ hold a bachelor’s degree or higher

The poverty rate uses the federal poverty thresholds, which vary with family size. It says nothing on its own about what a neighborhood is like to live in.

Source: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates

Getting around.

How workers aged 16 and over get to work, and how long it takes.

15 min

average commute to work

of commuters travel 45 minutes or more

88%

of workers drive or carpool

take public transportation

walk or bike

work from home

of households have no car

Source: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates

Internet.

Home internet subscriptions.

93%

of households have a broadband subscription

have no internet access at home

American Community Survey figures are estimates from a rolling sample, averaged over 2020–2024. Each comes with a margin of error, which is wider in places with fewer people.

Source: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates