Mills County, IA Property Tax Rate
Homeowners in Mills County pay an effective 1.46% of home value in property tax — about $3,339 a year on the median $228,700 home, above the Iowa county median of 1.34%.
Mills County, IA: 1.46% effective property tax — ~$3,339/yr on the median home.
- Effective rate1.46%
- Median home value$228,700
- Median annual bill$3,339
- IA county median1.34%
- U.S. county median0.84%
Source: U.S. Census ACS 2023 5-year (median taxes paid ÷ median value), compiled June 2026.
Mills County vs. Iowa and the U.S.
| Effective rate | On the county's $228,700 median home | |
|---|---|---|
| Mills County | 1.46% | $3,339 |
| Iowa county median | 1.34% | $3,065 |
| U.S. county median | 0.84% | $1,921 |
Median household income here is $87,810, putting the median tax bill at about 3.8% of income. Effective rates fold in homestead exemptions and assessment practice — they're what owners actually pay, which is why they beat statutory rates for comparison.
Highest & lowest rates in Iowa
| County | Effective rate | Median bill |
|---|---|---|
| Union County | 1.79% | $2,109 |
| Montgomery County | 1.79% | $1,967 |
| Polk County | 1.76% | $4,372 |
| Decatur County | 1.69% | $1,851 |
| Lyon County | 0.92% | $1,984 |
| Dickinson County | 0.98% | $2,466 |
| O'Brien County | 0.99% | $1,573 |
| Sac County | 1.03% | $1,426 |
Full picture: Iowa property tax calculator · interactive county atlas · all county pages.
Frequently asked questions
What is the property tax rate in Mills County, IA?
The effective rate is about 1.46% of home value — the median homeowner pays roughly $3,339 a year on a $228,700 median home (ACS 2023 five-year data).
Is Mills County's property tax high?
It's above the Iowa county median (1.34%) and above the U.S. county median (0.84%).
How is the effective rate calculated?
Median real-estate taxes paid ÷ median home value, from the Census American Community Survey — what owners actually pay, after exemptions, rather than the statutory millage.
Sources & methodology
Sources: Census ACS 2023 5-year tables B25103/B25077.
Effective rate = median real-estate taxes ÷ median home value (owner-occupied). Individual bills vary with exemptions, assessment timing and local levies — verify with the county assessor.