Property tax in Clinton County, Iowa

By Brent Chudoba, editor Updated September 23, 2026

The median property tax bill in Clinton County, Iowa is $2,461 a year, which is about 1.53% of the county's median home value of $160,600. That effective rate is higher than the typical Iowa county (1.32%) and higher than the national median (0.81%). These are American Community Survey 5-year estimates (2024); your own bill depends on your home's assessed value and any exemptions.

Estimate the property tax on a home in Clinton County

Enter a home's market value for a ballpark at Clinton County's average effective rate of 1.53% (Census). The real bill depends on the home's assessed value, the millage where it sits and any exemptions.

Home market value

Estimated property tax: $2,457 / year

Property tax in Clinton County at a glance

Clinton County, Iowa property tax (Census ACS, reviewed September 23, 2026)
Measure	Value
Median annual property tax	$2,461
Median home value	$160,600
Effective tax rate	1.53%
Typical Iowa county rate	1.32%
National median county rate	0.81%

Effective rate = median real estate taxes paid divided by median home value. Source: U.S. Census Bureau, American Community Survey 5-year estimates.

How does Clinton County compare in Iowa?

Among Iowa's 99 counties, Clinton County has the 10th highest effective property-tax rate: 9 rank higher and 89 rank lower. That places it among the most heavily taxed counties in the state. Nationally, it ranks 309th of 3135 US counties by effective rate. See every Iowa county ranked.

How much do homeowners in Clinton County actually pay?

The median is only the middle bill. Across Clinton County's 14,541 owner-occupied homes, 35.8% pay $3,000 or more a year in property tax, 59.8% pay at least $2,000, and 6.1% pay under $800. Another 2.6% report paying no property tax at all, which usually means an exemption covers the whole bill.

Annual property tax paid by Clinton County homeowners (Census ACS 2020-2024)
Annual bill	Homes	Share
Under $800	886	6.1%
$800 to $1,499	2,714	18.7%
$1,500 to $1,999	1,871	12.9%
$2,000 to $2,999	3,494	24%
$3,000 or more	5,201	35.8%
No property tax paid	375	2.6%

Owners with a mortgage pay a median of $2,503 and owners without one pay $2,402. That is within 10% either way, so in Clinton County paying off the house does not go with a noticeably different bill. Census table B25103.

How does the Clinton County property tax bill compare with local incomes?

The median property tax bill of $2,461 is about 3% of the median income of Clinton County homeowner households, $81,453 a year. That compares two middles, so a retiree in a long-held home can pay a far larger share. 74.5% of Clinton County's occupied homes are lived in by their owners; renters pay property tax too, just folded into rent.

Have property taxes gone up in Clinton County?

Yes. The median bill went from $1,955 in 2015-2019 to $2,461 in 2020-2024, a 25.9% rise. Over the same span the median home value moved 36%, from $118,100 to $160,600. Bills rose more slowly than values, which is what assessment caps and falling millage rates do: the county is taxing a smaller share of each home's worth.

Two Census ACS 5-year periods with no survey years in common, in each period's own dollars. A change counts only if it exceeds the combined 90% margin of error.

Property tax in counties next to Clinton County

Clinton County borders 7 counties, 3 of them across the state line.

Clinton County and its neighbors, highest effective rate first (Census ACS 2020-2024)
County	Effective rate	Median bill	Median home value
Rock Island County, IL	2.28%	$3,425	$150,400
Whiteside County, IL	2.04%	$2,598	$127,100
Carroll County, IL	1.99%	$2,277	$114,500
Clinton County, IA (this county)	1.53%	$2,461	$160,600
Scott County, IA	1.47%	$3,273	$222,000
Jones County, IA	1.33%	$2,450	$184,800
Jackson County, IA	1.23%	$2,159	$175,000
Cedar County, IA	1.22%	$2,568	$211,300

How is a home assessed in Clinton County?

Iowa sets the assessment rules and Clinton County applies them. How Iowa assesses and reappraises homes.

Is there a homestead exemption in Clinton County?

Yes. From the 2026 assessment year Iowa exempts 10% of a homestead's taxable value, never less than $5,500 or more than $20,000. File form 54-028 with your assessor by July 1. That is the Iowa rule, and it applies in Clinton County. Iowa's exemptions and relief programs in full.

When are property taxes due in Clinton County?

Iowa bills for a fiscal year running July 1 to June 30 and you pay the county treasurer in two halves, the first by September 30 and the second by March 31. The statute technically says pay before September 1 and March 1, but nothing goes delinquent and no interest accrues until October 1 and April 1, which is why counties advertise the end of September and March as the real deadlines. If the last day lands on a weekend you have until the second business day of the following month.

Iowa splits the bill into 2 installments. That is the Iowa rule. Clinton County issues and collects the bill, so the dates printed on your statement are the ones that bind you.

How to appeal your Clinton County property assessment

You contest the assessed value with the your local board of review, then the Property Assessment Appeal Board or district court. The filing deadline is typically April 30, with protests accepted from April 2 onward. That is the Iowa rule; Clinton County sets the exact dates and forms. The Iowa appeal process step by step.

Iowa rules from primary state sources, reviewed September 7, 2026; sources on the Iowa page.

Work out your own numbers

Sources

Median real estate taxes paid and median home value for Clinton County, Iowa: U.S. Census Bureau, American Community Survey 5-year estimates (2020-2024), tables B25103, B25077, B25102, B25119 and B25003; the five-year comparison uses the 2015-2019 estimates. Neighboring counties: Census county adjacency file.