Property tax in Foster County, North Dakota

By Brent Chudoba, editor Updated September 23, 2026

The median property tax bill in Foster County, North Dakota is $1,991 a year, which is about 1.19% of the county's median home value of $167,500. That effective rate is higher than the typical North Dakota county (0.92%) and higher than the national median (0.81%). These are American Community Survey 5-year estimates (2024); your own bill depends on your home's assessed value and any exemptions.

Estimate the property tax on a home in Foster County

Enter a home's market value for a ballpark at Foster County's average effective rate of 1.19% (Census). The real bill depends on the home's assessed value, the millage where it sits and any exemptions.

Home market value

Estimated property tax: $1,993 / year

Property tax in Foster County at a glance

Foster County, North Dakota property tax (Census ACS, reviewed September 23, 2026)
Measure	Value
Median annual property tax	$1,991
Median home value	$167,500
Effective tax rate	1.19%
Typical North Dakota county rate	0.92%
National median county rate	0.81%

Effective rate = median real estate taxes paid divided by median home value. Source: U.S. Census Bureau, American Community Survey 5-year estimates.

How does Foster County compare in North Dakota?

Among North Dakota's 53 counties, Foster County has the 3rd highest effective property-tax rate: 2 rank higher and 50 rank lower. That places it among the most heavily taxed counties in the state. Nationally, it ranks 746th of 3135 US counties by effective rate. See every North Dakota county ranked.

How much do homeowners in Foster County actually pay?

The median is only the middle bill. Across Foster County's 1,220 owner-occupied homes, 19.7% pay $3,000 or more a year in property tax, 45.7% pay at least $2,000, and 23.5% pay under $800. Another 8.3% report paying no property tax at all, which usually means an exemption covers the whole bill.

Annual property tax paid by Foster County homeowners (Census ACS 2020-2024)
Annual bill	Homes	Share
Under $800	287	23.5%
$800 to $1,499	143	11.7%
$1,500 to $1,999	132	10.8%
$2,000 to $2,999	317	26%
$3,000 or more	240	19.7%
No property tax paid	101	8.3%

Owners with a mortgage pay a median of $2,011 and owners without one pay $1,977. That is within 10% either way, so in Foster County paying off the house does not go with a noticeably different bill. Census table B25103.

How does the Foster County property tax bill compare with local incomes?

The median property tax bill of $1,991 is about 2% of the median income of Foster County homeowner households, $100,878 a year. That compares two middles, so a retiree in a long-held home can pay a far larger share. 79.7% of Foster County's occupied homes are lived in by their owners; renters pay property tax too, just folded into rent.

Have property taxes gone up in Foster County?

Yes. The median bill went from $1,519 in 2015-2019 to $1,991 in 2020-2024, a 31.1% rise. Over the same span the median home value moved 16.7%, from $143,500 to $167,500. Bills rose faster than values, which usually means local rates went up or an exemption shrank.

Two Census ACS 5-year periods with no survey years in common, in each period's own dollars. A change counts only if it exceeds the combined 90% margin of error.

Property tax in counties next to Foster County

Foster County borders 4 counties.

Foster County and its neighbors, highest effective rate first (Census ACS 2020-2024)
County	Effective rate	Median bill	Median home value
Foster County, ND (this county)	1.19%	$1,991	$167,500
Stutsman County, ND	1.1%	$2,289	$208,400
Eddy County, ND	1%	$1,237	$124,000
Wells County, ND	0.98%	$1,119	$114,500
Griggs County, ND	0.91%	$1,084	$119,300

How is a home assessed in Foster County?

North Dakota assesses homes at 4.5% of market value in every county, Foster County included. How North Dakota assesses and reappraises homes.

Is there a homestead exemption in Foster County?

Not as an exemption. North Dakota's Primary Residence Credit takes up to $1,600 off the tax bill; apply online with the Tax Commissioner between January 1 and April 1 each year. That is the North Dakota rule, and it applies in Foster County. North Dakota's exemptions and relief programs in full.

When are property taxes due in Foster County?

North Dakota bills once a year and lets you split it in half. The whole year's tax becomes due January 1 following the year it was levied, the first half goes delinquent after March 1 and the second after October 15, with penalties added at each missed date. If you pay the full year on or before February 15 the county treasurer takes 5% off the general real estate taxes, and that discount is calculated before the Primary Residence Credit is subtracted.

North Dakota splits the bill into 2 installments. That is the North Dakota rule. Foster County issues and collects the bill, so the dates printed on your statement are the ones that bind you.

How to appeal your Foster County property assessment

You contest the assessed value with the your local board of equalization, then the county board, then the State Board of Equalization. The filing deadline is typically April for the local board, then the first 10 days of June for the county board. That is the North Dakota rule; Foster County sets the exact dates and forms. The North Dakota appeal process step by step.

North Dakota rules from primary state sources, reviewed September 7, 2026; sources on the North Dakota page.

Work out your own numbers

Sources

Median real estate taxes paid and median home value for Foster County, North Dakota: U.S. Census Bureau, American Community Survey 5-year estimates (2020-2024), tables B25103, B25077, B25102, B25119 and B25003; the five-year comparison uses the 2015-2019 estimates. Neighboring counties: Census county adjacency file.