Property tax in Sullivan County, Indiana

By Brent Chudoba, editor Updated September 23, 2026

The median property tax bill in Sullivan County, Indiana is $799 a year, which is about 0.61% of the county's median home value of $131,100. That effective rate is lower than the typical Indiana county (0.66%) and lower 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 Sullivan County

Enter a home's market value for a ballpark at Sullivan County's average effective rate of 0.61% (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: $800 / year

Property tax in Sullivan County at a glance

Sullivan County, Indiana property tax (Census ACS, reviewed September 23, 2026)
Measure	Value
Median annual property tax	$799
Median home value	$131,100
Effective tax rate	0.61%
Typical Indiana county rate	0.66%
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 Sullivan County compare in Indiana?

Among Indiana's 92 counties, Sullivan County has the 62nd highest effective property-tax rate: 61 rank higher and 30 rank lower. That is on the lower side for Indiana. Nationally, it ranks 2217th of 3135 US counties by effective rate. See every Indiana county ranked.

How much do homeowners in Sullivan County actually pay?

The median is only the middle bill. Across Sullivan County's 5,983 owner-occupied homes, 5.4% pay $3,000 or more a year in property tax, 14.6% pay at least $2,000, and 45.5% pay under $800. Another 9% report paying no property tax at all, which usually means an exemption covers the whole bill.

Annual property tax paid by Sullivan County homeowners (Census ACS 2020-2024)
Annual bill	Homes	Share
Under $800	2,725	45.5%
$800 to $1,499	1,483	24.8%
$1,500 to $1,999	360	6%
$2,000 to $2,999	551	9.2%
$3,000 or more	326	5.4%
No property tax paid	538	9%

Owners with a mortgage pay a median of $854 and owners without one pay $735. 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 Sullivan County property tax bill compare with local incomes?

The median property tax bill of $799 is about 1.1% of the median income of Sullivan County homeowner households, $70,442 a year. That compares two middles, so a retiree in a long-held home can pay a far larger share. 76.4% of Sullivan 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 Sullivan County?

Yes. The median bill went from $586 in 2015-2019 to $799 in 2020-2024, a 36.3% rise. Over the same span the median home value moved 52.4%, from $86,000 to $131,100. 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 Sullivan County

Sullivan County borders 6 counties, 2 of them across the state line.

Sullivan County and its neighbors, highest effective rate first (Census ACS 2020-2024)
County	Effective rate	Median bill	Median home value
Clark County, IL	1.56%	$2,064	$132,400
Crawford County, IL	1.49%	$1,806	$121,100
Vigo County, IN	0.88%	$1,313	$148,500
Knox County, IN	0.68%	$933	$137,700
Sullivan County, IN (this county)	0.61%	$799	$131,100
Greene County, IN	0.58%	$896	$153,200
Clay County, IN	0.41%	$627	$153,000

How is a home assessed in Sullivan County?

Indiana assesses homes at 100% of market value in every county, Sullivan County included. How Indiana assesses and reappraises homes.

Is there a homestead exemption in Sullivan County?

Yes, but it is shrinking. Indiana's homestead standard deduction is $40,000 for assessment year 2026 and reaches $0 from 2030; a bill paid in 2026 reflects the $48,000 figure. That is the Indiana rule, and it applies in Sullivan County. Indiana's exemptions and relief programs in full.

When are property taxes due in Sullivan County?

Two installments, customarily due May 10 and November 10 of the year after the January 1 assessment, moving to the next business day when they fall on a weekend. One statement covering both is mailed in spring. Late payment costs 5% within 30 days, 10% after.

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

How to appeal your Sullivan County property assessment

You contest the assessed value with the County or township assessor, then the Property Tax Assessment Board of Appeals, then the Indiana Board of Tax Review. The filing deadline is typically June 15 of the assessment year if your Form 11 notice was mailed before May 1, otherwise June 15 of the year the bill was mailed. That is the Indiana rule; Sullivan County sets the exact dates and forms. The Indiana appeal process step by step.

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

Work out your own numbers

Sources

Median real estate taxes paid and median home value for Sullivan County, Indiana: 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.