Oliver County, North Dakota Property Taxes

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Property Taxes in Oliver County, North Dakota

Median Oliver County effective property tax rate: 0.77%, significantly lower than the national median of 1.02%.
Median Oliver County home value: $154,817
Median annual Oliver County tax bill: $1,145, $1,255 lower than the national median property tax bill of $2,400.

How are property taxes in Oliver County calculated?

Property taxes in Oliver County are calculated based on the tax assessed value, which is often lower than the actual market value due to property tax exemptions such as the homestead or senior exemption.

Why is the Oliver County property tax rate important? Because a lower effective rate can mean a smaller annual tax bill for homeowners and investors. How does Oliver County compare with North Dakota? The county’s 0.77% effective property tax rate is lower than the state median rate of 1.20%.

Understanding your county's property tax system, exemptions, and reduction opportunities can lead to significant savings. Whether you live in a city in Oliver County or another part of Oliver County, knowing local tax details benefits homeowners and investors.

Last Updated April 13, 2026

Oliver County, North Dakota Property Tax Bill Calculator

Property Assessed Value

$100,000

$1,500,000

$3,000,000

Median Effective Tax Rate

0.77%

Estimate Property Tax Bill

$1,192

$1,106

How Does the Oliver County Property Tax Calculator Work?

Use this Oliver County property tax calculator to estimate your annual property tax bill. Enter your property's assessed value and our calculator applies Oliver County's median effective tax rate of 0.77% to generate your estimate.

Enter your property's estimated assessed value — the figure the assessment office assigns for tax purposes, which is typically lower than market value after applicable exemptions. Our calculator uses the median effective rate for a more accurate estimate than the statutory millage rate alone.

Your actual bill may vary based on your specific exemptions, local school district levies, and any special assessment districts that apply to your property. Oliver County's median effective tax rate is lower than North Dakota's 1.20% state median tax rate and lower than the national median property tax rate of 1.02%.

For a more precise estimate, scroll down to explore city and ZIP code-level tax rate trends across Oliver County.

Property Tax Rates Across Oliver County, North Dakota

What Are Effective Property Tax Rates Across Oliver County?

Local government entities set tax rates, which vary widely across Oliver County. Each year, the county estimates its budget for public services and divides that total by the assessed value of all taxable property within its jurisdiction.

Below, compare Oliver County's effective property tax rate to other counties in North Dakota or the U.S. median of 1.02%.

Oliver County's median effective rate stands at 0.77%, which is lower than the national median of 1.02%. Within Oliver County, the highest rate is found in Hensler at 0.95%, while Hazen has the lowest at 0.71%.

These variations reflect differences in local school district levies, special assessment districts assessments, and special district bonds — which compound the base county rate.

Property Tax Rates Across Oliver County, North Dakota

Source: Ownwell

0.71%

0.83%

0.95%

Our median effective property tax rate (tax bill ÷ assessor's market value) accounts for exemptions and deductions, making it more accurate than the general median tax rate, which is the midpoint of statutory rates before adjustments.

Median Effective Oliver County Tax Rate

0.77%

Median Effective North Dakota Tax Rate

1.20%

Median Effective United States Tax Rate

1.02%

Property Tax Rates Across Oliver County, North Dakota

City	10th Percentile	25th Percentile	Median Tax Rate	75th Percentile	90th Percentile
Beulah	0.71%	0.71%	0.76%	0.76%	0.76%
Center	0.77%	0.77%	0.77%	0.77%	0.77%
Hazen	0.71%	0.71%	0.71%	0.71%	0.77%
Hensler	0.77%	0.77%	0.95%	0.95%	0.95%
New Salem	0.72%	0.72%	0.73%	0.76%	0.77%
Hannover	N/A	N/A	N/A	N/A	N/A
Stanton	N/A	N/A	N/A	N/A	N/A

Source: Ownwell

Property Tax Assessment Values Across Oliver County, North Dakota

When examining property taxes in Oliver County, understanding the distinction between "market value" and "assessed value" is crucial.

The market value is what a willing buyer would pay to a willing seller in an open and competitive market, often influenced by location, property condition, and economic market trends. The Oliver County tax authority estimates the market value for tax purposes.

The assessed value is the market value minus any applicable exemptions or limits determined by local laws and offerings. The tax assessed value is the figure used to calculate your property taxes or the amount multiplied by your tax rate to get your tax bill.

Assessment notices:

In Oliver County, assessment notices are sent in the spring each year. They'll typically reach your mailbox by the middle of March.

Each property owner receives an assessment notice that contains both the market value and assessed value, along with an estimate of your property tax bill. By providing insights into how assessed and market values are determined, this section helps property owners navigate their tax responsibilities and understand the valuation processes affecting their property taxes in Oliver County.

For example, the median tax bill in Oliver County is $1,145, with tax bills ranging significantly across the county. Hensler has the highest median home price at $199,393.

Property Tax Assessment Values Across Oliver County, North Dakota

Source: Ownwell

$103,838

$151,616

$199,393

Median Oliver County Market Value

$154,817

Median North Dakota Market Value

$244,000

Median United States Market Value

$235,294

Property Tax Assessment Values Across Oliver County, North Dakota

City	10th Percentile	25th Percentile	Median Home Price	75th Percentile	90th Percentile
Beulah	$76,187	$129,925	$159,506	$239,096	$313,997
Center	$40,297	$93,339	$167,769	$252,161	$325,566
Hazen	$25,379	$55,704	$103,838	$199,178	$270,289
Hensler	$64,960	$157,699	$199,393	$292,268	$311,826
New Salem	$49,846	$65,634	$126,050	$203,758	$271,276
Hannover	N/A	N/A	N/A	N/A	N/A
Stanton	N/A	N/A	N/A	N/A	N/A

Source: Ownwell

Property Tax Bills Across Oliver County, North Dakota

Property tax bills in Oliver County are based on a home’s assessed value, which is the value used by local taxing authorities to calculate taxes. That assessed value is then multiplied by the local tax rate, so two homes with different market values can receive very different bills. Factors such as the home’s location, property characteristics, and local levy rates all play a role in the final amount.

For homeowners, this means a higher assessed value generally leads to a higher tax bill, while a lower assessed value can reduce what is owed. In Oliver County, the median home price is $154,817, and tax bills vary widely across the county. The 25th percentile tax bill is $639, while the 75th percentile is $1,851 and the 90th percentile reaches $2,466. Median tax bills also differ by city, from $631 in Hazen to $1,717 in Hensler.

Property Tax Bills Across Oliver County, North Dakota

Source: Ownwell

$631

$1,174

$1,717

Median Oliver County Tax Bill

$1,145

Median North Dakota Tax Bill

$2,769

Median United States Tax Bill

$2,400

Property Tax Bills Across Oliver County, North Dakota

City	10th Percentile	25th Percentile	Median Tax Bill	75th Percentile	90th Percentile
Beulah	$349	$826	$1,133	$1,600	$2,291
Center	$337	$703	$1,316	$1,949	$2,551
Hazen	$194	$398	$631	$1,497	$1,929
Hensler	$598	$1,019	$1,717	$2,332	$2,757
New Salem	$358	$474	$946	$1,514	$1,979
Hannover	N/A	N/A	N/A	N/A	N/A
Stanton	N/A	N/A	N/A	N/A	N/A

Source: Ownwell

Don't miss the deadline to appeal!

Dates
Appeal Deadline	April 13

Links
Oliver Tax Assessor
Website	oliver.northdakotaassessors.com

Frequently Asked Property Tax Questions in Oliver County, North Dakota

How are property taxes calculated in Oliver County, North Dakota?

Property taxes in Oliver County, North Dakota are calculated by multiplying your property's assessed value by the applicable tax rate set by local taxing authorities. The assessed value is determined by the county assessor and may differ from your property's market value depending on local assessment ratios and exemptions.

How do I appeal my property taxes in Oliver County, North Dakota?

To appeal your property taxes in Oliver County, North Dakota, you typically need to file a formal protest or appeal with your local appraisal district or assessor's office by the stated deadline. You'll need evidence such as comparable sales, a recent independent appraisal, or documentation of property condition issues. Ownwell can handle this entire process for you.

What property tax exemptions are available in Oliver County, North Dakota?

Common property tax exemptions in Oliver County, North Dakota include homestead exemptions for primary residences, senior citizen exemptions, veteran exemptions, and disability exemptions. Exemption amounts and eligibility requirements vary by county. Contact your local appraisal district or check Ownwell for details specific to your property.

When are property taxes due in Oliver County, North Dakota?

Property tax deadlines in Oliver County, North Dakota vary by county but typically include an assessment notice period in spring or early summer, followed by an appeal deadline, and a tax payment due date in the fall or winter. Check with your county assessor's office for specific dates in your area.

How can Ownwell help reduce my property taxes in Oliver County, North Dakota?

Ownwell provides professional property tax appeal services in Oliver County, North Dakota. Our team analyzes your assessment, gathers evidence, files all paperwork, and represents you at hearings — all with no upfront cost. You only pay a percentage of your savings if we successfully lower your tax bill.