Property Tax in Polk County, Iowa
Homeowners in Polk County, Iowa pay a median of $4,364 a year in real estate taxes, on a median home value of $248,400. Those are the Census Bureau's published medians for the county (US Census Bureau, American Community Survey (ACS) 5-year estimates, 2023) — the typical bill and the typical home value for owner-occupied households.
What the Polk County numbers mean
A median is the middle household: half of owner-occupied households in Polk County pay more than $4,364, and half pay less. Your own bill is set by your home's assessed value, the exemptions you qualify for, and the local taxing districts your property sits in — so individual bills vary widely around the median.
Dividing the median tax by the median home value gives a derived effective rate of 1.76% for Polk County. It is an estimate built from two survey medians, not the county's official rate, but it is a fair way to compare the local tax burden with other counties where home values are very different.
The key figures for Polk County
| Measure | Polk County |
|---|---|
| Median real estate taxes paid per year | $4,364 |
| Median home value | $248,400 |
| Derived effective rate* | 1.76% |
| Equivalent monthly tax | $364 |
| Tax per $100,000 of value (derived) | $1,757 |
| Illustrative tax on a $400,000 home (derived rate) | $7,028 |
For context, the Iowa medians are $2,795 of tax on $195,900 of value, and the US medians are $2,969 on $303,400. *Derived figures are estimates from Census medians, not official rates.
Polk County at a glance
- Median tax rank in Iowa: #3 of 99 counties
- Median home value rank in Iowa: #5 of 99
- Population rank in Iowa: #1 of 99 (497,441 residents)
- Population density rank: #1 of 99 (869 people per square mile)
- Land area rank in Iowa: #41 of 99 (572 sq mi, 1.0% of the combined county land area)
- Median tax as a monthly figure: $364; per $1,000 of home value: $1.76
How Polk County compares
Set against its state, Polk County's median bill of $4,364 is about 56% higher than the Iowa median ($2,795). Against the country as a whole it is about 47% higher than the US median ($2,969). That places the county #3 of 99 Iowa counties ranked by median taxes paid.
Remember what drives the ranking: bills follow home values as much as rates. Polk County's median home, at $248,400, ranks #5 by value in Iowa, while its derived rate of 1.76% compares with a derived US figure of 0.98%.
Some extra context for Polk County: the median bill works out to about $364 a month, and the derived rate equals roughly $1,757 of tax per $100,000 of home value. The county is home to 497,441 people — the #1 most populous county in Iowa, spread over 572 square miles, a density of about 869 people per square mile. Its median home value, $248,400, ranks #5 among the state's 99 counties with data.
Nationally, Polk County's median bill of $4,364 ranks #182 of 3133 counties with published data — inside the top 6% of counties by tax paid. The county accounts for about 15.6% of Iowa's population, its median home value is about 27% above the state median, and at the derived rate the median home would hand over roughly 17.57% of its value in tax across a decade. Within the state, the distance from Polk County to the most expensive county, Dallas County ($4,849), is $485 a year.
Counties nearest Polk County in the Iowa ranking
| County | Median tax paid | Median home value | Derived rate* |
|---|---|---|---|
| Dallas County, IA | $4,849 | $333,400 | 1.45% |
| Johnson County, IA | $4,587 | $293,100 | 1.56% |
| Warren County, IA | $3,797 | $252,800 | 1.50% |
| Madison County, IA | $3,681 | $236,900 | 1.55% |
How the tax is worked out
The bill is built in stages. First the assessor puts a market value on the property. Exemptions — a homestead exemption above all — then reduce the taxable amount. Finally the combined local rate is applied. To see the scale: at the county's derived rate of 1.76%, each $100,000 of value corresponds to about $1,757 of tax a year, and a $400,000 home to roughly $7,028. Real bills use the official assessment and district rates, not this derived figure, so treat the example as a sense of scale only.
Checking your assessment in Polk County
Most successful appeals are won on facts, not arguments. Start with the property record card held by the Polk County assessor: wrong square footage, an extra room, or a missing homestead exemption are common and fixable. Next, line your assessed value up against recent sales of genuinely similar homes nearby. Many disputes end at an informal conversation with the assessor's office; if yours does not, file the formal appeal with the review board named on your notice before its deadline, evidence attached, and keep paying the bill in the meantime so penalties do not build up.
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Frequently asked questions
What is the median property tax in Polk County, Iowa?
The median real estate tax paid in Polk County, Iowa is $4,364 per year, on a median home value of $248,400 (US Census Bureau, American Community Survey (ACS) 5-year estimates, 2023).
What is the effective property tax rate in Polk County, Iowa?
The derived effective rate is 1.76% — the median bill ($4,364) expressed as a share of the median home value ($248,400). No authority sets a rate this way; it exists to make counties with different home prices comparable.
How does Polk County compare with the rest of Iowa?
Polk County ranks #3 of 99 Iowa counties with published data by median taxes paid. Its median bill of $4,364 is about 56% higher than the Iowa median of $2,795.
How are property taxes calculated in Polk County, Iowa?
Three steps produce the bill: an assessment of market value by the local assessor, a reduction for exemptions you qualify for (a homestead exemption is the common one), and multiplication by the combined rates of the county, municipality, school district and any special districts covering the property. The median result in Polk County is $4,364 of tax on a $248,400 median home value.
Can I appeal my property tax assessment in Polk County, Iowa?
Yes — appeals are handled locally. Start with the Polk County assessor's property record card for your home, correct any factual errors, and back your case with comparable recent sales. Formal appeals go to the review board named on your assessment notice and must be filed by its deadline, typically within 30 to 90 days.