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County tax profile · 2026 · Census ACS + IRS data

Property Tax & Income in Grant County, Wisconsin

Grant County has an effective property tax rate of 1.36%. On the median home value of $200,700, that's roughly $2,729 per year. Median household income is $66,858.

Effective Property Tax Rate1
1.36%
median tax $2,729 ÷ median home $200,700
Median Home Value1
$200,700
owner-occupied
Median Household Income1
$66,858
per-capita $34,411
Est. Annual Tax on Median Home1
$2,729
at 1.36% 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.

MetricGrant CountyWisconsin (state context)
Effective property tax rate11.36%1.36%
Median home value1$200,700—
State income tax3top rate 7.65%top rate 7.65%
State sales tax35.72% combined5.72% 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 Grant County, WI

Grant County’s effective property tax rate of 1.360% lands just a hair under Wisconsin’s statewide median of 1.362%, placing it 38th among the state’s 72 counties — essentially the middle of the pack, though technically on the lower half of the ranking. Against the national median of 0.794%, however, the gap is stark: homeowners here pay a noticeably higher share of their property’s value than the average American. On a median home value of $200,700, that rate produces an annual tax bill of $2,729. With median household income at $66,858 and per-capita income at $34,411, the tax consumes a meaningful slice of earnings. Communities such as Muscoda, Livingston, and Montfort reflect the county’s mix of small towns, where local levies and school funding needs help keep rates near the state average rather than the lower national one.

Frequently asked questions

What is the property tax rate in Grant County, WI?
The effective rate is 1.36% — meaning the median tax bill equals about 1.36% of the median home value.
How much are property taxes on a median home?
On the median home ($200,700), the estimated annual bill is about $2,729.
Is Grant County's rate high or low?
Compare it to the state median of 1.36% 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 Grant 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 Grant 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.