Property tax in Calhoun County, Illinois

By Brent Chudoba, editor Updated September 23, 2026

In Calhoun County, the property tax bill comes from the Calhoun County Treasurer (the county collector). The 2025 bill is paid in 2 installments, and the next one is due October 23, 2026. You can look up and pay the bill on the county's own payment page. Taken from Calhoun County's own pages, checked September 23, 2026.

The median property tax bill in Calhoun County, Illinois is $2,644 a year, which is about 1.39% of the county's median home value of $190,900. That effective rate is lower than the typical Illinois county (1.81%) 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.

Who sends the property tax bill in Calhoun County, and how do you pay it?

The bill comes from the Calhoun County Treasurer (the county collector). The value it is based on is set by a separate office, the Calhoun County Supervisor of Assessments, with the township assessors, which is who to ask if the value looks wrong. For how to look up and pay the bill, go to the county's own payment information.

Township assessors value homes; the county's Supervisor of Assessments post is listed as vacant, with the Board of Review handling assessment questions in the meantime. A Board of Review decision can be appealed to the Illinois Property Tax Appeal Board within 30 days. One county bill carries the taxes of every local district the property sits in, such as the school district, the county, the community college, the road district, the village and the fire district. Online payments go through an outside payment processor that may charge a fee. Checks are payable to the Calhoun County Collector and can be mailed with the bill stub to P.O. Box 306, Hardin, IL 62047, paid in person at the Treasurer's office in the government center, or left in the 24-hour drop box in the Sheriff's Office lobby.

When are property taxes due in Calhoun County?

For the 2025 (Payable 2026) bill, Calhoun County splits the bill into 2 payments, the first due October 23, 2026 and the last December 4, 2026. Illinois law adds a penalty of 1.5% a month, or part of a month, to an installment paid after its due date. A late payment sent without the penalty is returned. The county has not posted its tax sale date for these taxes.

Calhoun County property tax due dates, 2025 (Payable 2026)
Payment	Due	Note
First installment	October 23, 2026	These are the due dates printed on the county's current tax bills in its online property tax inquiry. The county's own pages do not list them.
Second installment	December 4, 2026

From Calhoun County's published schedule, checked September 23, 2026. The county had not posted a calendar labeled for this cycle when we checked, so these dates come from state law and the county's standing schedule; the date on your bill is the one that binds you.

Estimate the property tax on a home in Calhoun County

Enter a home's market value for a ballpark at Calhoun County's average effective rate of 1.39% (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: $2,654 / year

Property tax in Calhoun County at a glance

Calhoun County, Illinois property tax (Census ACS, reviewed September 23, 2026)
Measure	Value
Median annual property tax	$2,644
Median home value	$190,900
Effective tax rate	1.39%
Typical Illinois county rate	1.81%
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 Calhoun County compare in Illinois?

Among Illinois's 102 counties, Calhoun County has the 94th highest effective property-tax rate: 93 rank higher and 8 rank lower. That places it among the least taxed counties in the state. Nationally, it ranks 473rd of 3135 US counties by effective rate. See every Illinois county ranked.

How much do homeowners in Calhoun County actually pay?

The median is only the middle bill. Across Calhoun County's 1,099 owner-occupied homes, 42.6% pay $3,000 or more a year in property tax, 60.3% pay at least $2,000, and 15.1% pay under $800. Another 2.3% report paying no property tax at all, which usually means an exemption covers the whole bill.

Annual property tax paid by Calhoun County homeowners (Census ACS 2020-2024)
Annual bill	Homes	Share
Under $800	166	15.1%
$800 to $1,499	149	13.6%
$1,500 to $1,999	97	8.8%
$2,000 to $2,999	194	17.7%
$3,000 or more	468	42.6%
No property tax paid	25	2.3%

Owners with a mortgage pay a median of $3,213 and owners without one pay $2,395. Owners who have paid off a home have usually held it longer, and in states that cap how fast an existing owner's assessment can rise, long-held homes carry lower assessed values. Census table B25103.

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

The median property tax bill of $2,644 is about 2.8% of the median income of Calhoun County homeowner households, $95,750 a year. That compares two middles, so a retiree in a long-held home can pay a far larger share. 88.7% of Calhoun 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 Calhoun County?

Yes. The median bill went from $2,132 in 2015-2019 to $2,644 in 2020-2024, a 24% rise. Over the same span the median home value moved 57.8%, from $121,000 to $190,900. 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 Calhoun County

Calhoun County borders 6 counties, 3 of them across the state line.

Calhoun County and its neighbors, highest effective rate first (Census ACS 2020-2024)
County	Effective rate	Median bill	Median home value
Jersey County, IL	1.76%	$3,020	$171,900
Greene County, IL	1.74%	$1,661	$95,200
Pike County, IL	1.53%	$1,556	$101,400
Calhoun County, IL (this county)	1.39%	$2,644	$190,900
St. Charles County, MO	1.08%	$3,480	$320,800
Lincoln County, MO	0.74%	$1,811	$244,300
Pike County, MO	0.67%	$979	$146,000

How is a home assessed in Calhoun County?

Illinois assesses homes at 33.33% of market value in every county, Calhoun County included. How Illinois assesses and reappraises homes.

Is there a homestead exemption in Calhoun County?

Yes. Illinois's General Homestead Exemption is $6,000 of equalized assessed value in most counties, $8,000 in counties next to Cook, and $10,000 in Cook County. That is the Illinois rule, and it applies in Calhoun County. Illinois's exemptions and relief programs in full.

Calhoun County does not add relief programs of its own beyond the Illinois ones (checked September 23, 2026).

How to appeal your Calhoun County property assessment

In Calhoun County you appeal to the Calhoun County Board of Review. The deadline: A complaint must be filed within 30 days after the assessment list is published in the newspaper. The county asks owners to talk with their assessor first. The county has not posted the 2026 publication date; the assessment office in Hardin can give it. How to file. Checked September 23, 2026 against the official appeal rules.

How Illinois's appeal process works, including the next level if the first one turns you down.

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

Work out your own numbers

Sources

Median real estate taxes paid and median home value for Calhoun County, Illinois: 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.