Iowa estimator · ACS 2024 · 99 counties
Iowa Property Tax Calculator
Iowa taxes property harder than most states. Enter your home value, choose your county, and benchmark your estimate against the 1.39% state average.
- 1.39%
- IA avg eff. rate
- $2,897
- state median bill
- 0.92%
- U.S. avg rate
County effective rates from the U.S. Census Bureau ACS 2024. See our methodology.
Rate-band peers for the Iowa estimator
Before treating Iowa's 1.39% average as typical, open these nearest-rate jurisdictions (Wisconsin and Ohio).
- Wisconsin calculator Wisconsin nearly matches Iowa · 1.42%
- Ohio calculator Ohio runs 0.08 pts below Iowa · 1.31%
- Pennsylvania calculator Pennsylvania runs 0.09 pts below Iowa · 1.30%
- Kansas calculator Kansas runs 0.10 pts below Iowa · 1.29%
- Nebraska calculator Nebraska runs 0.10 pts above Iowa · 1.49%
Estimated Property Tax
vs State and National Averages
Highest effective rates among Iowa counties
| # | County | Eff. rate | Median tax |
|---|---|---|---|
| 1 | Union County | 1.80% | $2,197/yr |
| 2 | Polk County | 1.68% | $4,396/yr |
| 3 | Linn County | 1.66% | $3,547/yr |
| 4 | Montgomery County | 1.65% | $2,007/yr |
| 5 | Decatur County | 1.61% | $1,831/yr |
| 6 | Clarke County | 1.60% | $2,578/yr |
| 7 | Wapello County | 1.58% | $1,974/yr |
| 8 | Pottawattamie County | 1.57% | $3,067/yr |
| 9 | Henry County | 1.56% | $2,559/yr |
| 10 | Clinton County | 1.53% | $2,461/yr |
Top 10 of 99 Iowa counties by effective rate (median tax ÷ median home value), ACS 2024. Each county links to its full profile.
What the data shows for Iowa
Primary signal
More counties sit above the national rate than below
Of the 99 Iowa counties with measured ACS 2024 data, 97 carry an effective rate above the 0.92% national average while 1 sit below it.
Decision signal 2
The median annual bill has a monthly reading
At the median, a Iowa homeowner's $2,897 annual bill works out to about $241 a month on top of mortgage, insurance, and utilities, one reason the effective rate matters as much as the sticker price when comparing locations.
Decision signal 3
The statewide rate sits in the high-burden group
Iowa ranks in the top third of states for effective property tax rates (10 of 51), averaging 1.39% against the national 0.92%.
Decision signal 4
A median-home worked example anchors the scale
A home at Iowa's median value of $208,000 pays roughly $2,891 a year at the 1.39% state average rate, but about $3,744 at Union County's 1.80% rate versus $1,810 at Lyon County's 0.87%.
Decision signal 5
County rates diverge enough to change the estimate
Rates roughly double from Iowa's cheapest county (0.87%) to its most expensive (1.80%).
Reading these numbers correctly matters. An effective rate is a measured outcome, not a posted tax rate: it captures what typical homeowners actually paid after exemptions, assessment ratios, and every overlapping levy settled out. That makes it the most comparable single figure across county lines, where statutory mill rates are defined against different assessment bases and cannot be compared directly. Two counties with identical posted rates can produce very different real bills, and the reverse is just as common. Lenders use a similar logic when they estimate escrow: a percentage of value, calibrated to the taxing jurisdiction. Treat the figures here the same way, as a calibrated starting point that tells you which jurisdictions are expensive relative to home value, and confirm the exact bill with the assessor before you commit.
How This Calculator Works
The estimate multiplies your entered home value by a measured effective property tax rate: median taxes paid divided by median home value from Census Bureau ACS 2024 data, either for your selected Iowa county or for the state as a whole.
This is a representative estimate, not your bill: actual Iowa taxes depend on your assessed value, exemptions you qualify for, and municipal levies. Verify with your county assessor before making financial decisions.
Explore Iowa
Frequently Asked Questions
How does Iowa compare to the national average?
What is the typical property tax bill in Iowa?
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Does this estimate include exemptions?
PlainPropertyTax is rendered directly from the U.S. Census Bureau's American Community Survey (ACS) 5-year estimates, no number is typed in by an editor. Estimates multiply your input by Iowa county or state effective rates (median taxes paid ÷ median home value), ACS 2024 5-Year Estimates. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2026-08-09.