Mills County, IA property tax rate
Mills County · Iowa · #19 of 99 in the state
Median annual property tax $3,494 · median home value $237,800
$3,494 a year · $291 a month using the area benchmark. Enter a value such as 350,000 or 350,000.00.
A rough planning estimate, not a tax quote.
Above the U.S. benchmark 0.94% (1.57×), above the Iowa benchmark 1.39%.
Ranked among 99 Iowa counties with available benchmarks.
What this benchmark means
Median real estate taxes paid ÷ median owner-occupied home value, ACS 2020–2024 — a ratio of two medians, not a statutory rate, not the median of individual bills and not your property's rate. Exemptions people already claim are reflected in the survey; your bill depends on taxable value, local districts, exemptions and reassessment after a sale.
Census figures behind this page
| Median real estate taxes paid | $3,494 |
|---|---|
| With a mortgage / without | $3,589 / $3,312 |
| Median home value | $237,800 |
| Median household income | $90,753 · tax is 3.9% of it |
| Median gross rent | $959 / mo |
| Owner-occupied | 84% of 5,394 homes |
| Population | 14,568 |
When it's due in Iowa
All states| First half | Due Sep 30 Late after Oct 1 under state law — the exact cutoff time, weekend/holiday carry-over and this year's date are on your bill. |
|---|---|
| Second half | Due Mar 31 Late after Apr 1 under state law — the exact cutoff time, weekend/holiday carry-over and this year's date are on your bill. |
| Late penalty | 1.5% per month interest (18% annually) calculated to the nearest whole dollar (Iowa Code § 445.39) |
| Appeal window | April 2 to April 30 to local Board of Review (Iowa Code § 441.37) |
Taxes payable in 2 equal installments: 1st half due September 30 (delinquent Oct 1), 2nd half due March 31 (delinquent Apr 1). Regular annual schedule; tax year: fiscal year July 1 - June 30, bills mailed August. Source: Iowa Code § 445.36, § 445.37, § 445.39, rules checked 2026-09-19. Confirm the amount and deadline on your official tax bill.
Iowa counties with a similar rate
All 99How this benchmark was computed
Median real estate taxes paid by owner-occupied households in Mills County ($3,494) divided by the median value of those homes ($237,800), both from the Census Bureau's American Community Survey 2020–2024 5-year estimates. It is a ratio of two medians — a reasonable area benchmark, not the assessor's mill rate and not any one household's rate. Newly purchased homes are often reassessed to sale price, so a buyer's first bill can run above it. Data & method