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County tax profile · 2026 · Census ACS + IRS data

Property Tax & Income in Sioux County, North Dakota

Sioux County has an effective property tax rate of 0.49%. On the median home value of $85,400, that's roughly $420 per year. Median household income is $42,083.

Effective Property Tax Rate1
0.49%
median tax $420 ÷ median home $85,400
Median Home Value1
$85,400
owner-occupied
Median Household Income1
$42,083
per-capita $21,541
Est. Annual Tax on Median Home1
$420
at 0.49% effective rate

What you'll pay, at a glance

Property taxes are the largest local tax most homeowners pay. The effective rate measures the real tax bill as a share of home value — a more useful number than the nominal “mill rate,” because assessment practices vary county to county.

MetricSioux CountyNorth Dakota (state context)
Effective property tax rate10.49%0.92%
Median home value1$85,400—
State income tax3top rate 2.50%top rate 2.50%
State sales tax37.09% combined7.09% combined

How this is calculated

The effective property tax rate is the median real-estate tax bill divided by the median home value — both for owner-occupied homes, from the U.S. Census Bureau's American Community Survey (ACS 5-year estimates)1. Median income is also from the ACS1. Federal and state income-tax figures use IRS2 and Tax Foundation3 data.

About Sioux County, ND

Sioux County offers one of North Dakota's most affordable entry points into homeownership. With a median home value of $85,400, buyers here face prices far below what many markets demand, and the property tax side reinforces that advantage: the county's effective rate of 0.492% ranks 50th out of 53 counties statewide and sits well under North Dakota's 0.916% median. That combination yields a median annual tax bill of just $420. Households earning the county median of $42,083 can absorb that sum without much strain, and per-capita income stands at $21,541. Communities like Fort Yates anchor the county, which remains notably cheaper than the nation overall, where the median effective rate is 0.794%. For anyone weighing a purchase, the arithmetic favors Sioux County: low purchase prices paired with low ongoing taxes.

Frequently asked questions

What is the property tax rate in Sioux County, ND?
The effective rate is 0.49% — meaning the median tax bill equals about 0.49% of the median home value.
How much are property taxes on a median home?
On the median home ($85,400), the estimated annual bill is about $420.
Is Sioux County's rate high or low?
Compare it to the state median of 0.92% and the national average near 1.1%.
How does the effective rate differ from my mill rate?
A mill rate is the nominal levy per $1,000 of assessed value. The effective rate reflects what you actually pay after exemptions and assessments — it's the median tax bill as a share of median home value, so it better predicts your real cost.
Will a reassessment raise my tax bill?
Not necessarily. If your home's assessed value rises, your bill can go up, but only if the mill rate and exemptions stay flat. Contact the Sioux County assessor's office to review your current assessment.
Can I appeal my property tax assessment?
Yes. Most counties allow an appeal when you believe the assessed value exceeds the market value. File with the Sioux County assessor within the local deadline, typically with comparable sales as evidence.
Sources
[1] U.S. Census Bureau — ACS 5-Year (2023) — Median home value (B25077), median real-estate taxes (B25103), median household income (B19013), per-capita income (B19301).
[2] IRS — Statistics of Income — County income, AGI, and real-estate taxes paid.
[3] Tax Foundation — State income, sales, corporate, and estate/inheritance tax rates.