Property tax in Big Horn County, Wyoming

By Brent Chudoba, editor Updated September 23, 2026

The median property tax bill in Big Horn County, Wyoming is $1,198 a year, which is about 0.55% of the county's median home value of $216,500. That effective rate is lower than the typical Wyoming county (0.56%) 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 Big Horn County

Enter a home's market value for a ballpark at Big Horn County's average effective rate of 0.55% (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: $1,191 / year

Property tax in Big Horn County at a glance

Big Horn County, Wyoming property tax (Census ACS, reviewed September 23, 2026)
Measure	Value
Median annual property tax	$1,198
Median home value	$216,500
Effective tax rate	0.55%
Typical Wyoming county rate	0.56%
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 Big Horn County compare in Wyoming?

Among Wyoming's 23 counties, Big Horn County has the 15th highest effective property-tax rate: 14 rank higher and 8 rank lower. That is on the lower side for Wyoming. Nationally, it ranks 2475th of 3135 US counties by effective rate. See every Wyoming county ranked.

How much do homeowners in Big Horn County actually pay?

The median is only the middle bill. Across Big Horn County's 3,385 owner-occupied homes, 9% pay $3,000 or more a year in property tax, 22.9% pay at least $2,000, and 28.5% pay under $800. Another 3.4% report paying no property tax at all, which usually means an exemption covers the whole bill.

Annual property tax paid by Big Horn County homeowners (Census ACS 2020-2024)
Annual bill	Homes	Share
Under $800	966	28.5%
$800 to $1,499	1,128	33.3%
$1,500 to $1,999	401	11.8%
$2,000 to $2,999	471	13.9%
$3,000 or more	303	9%
No property tax paid	116	3.4%

Owners with a mortgage pay a median of $1,181 and owners without one pay $1,221. That is within 10% either way, so in Big Horn County paying off the house does not go with a noticeably different bill. Census table B25103.

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

The median property tax bill of $1,198 is about 1.7% of the median income of Big Horn County homeowner households, $70,121 a year. That compares two middles, so a retiree in a long-held home can pay a far larger share. 75.9% of Big Horn 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 Big Horn County?

Yes. The median bill went from $1,082 in 2015-2019 to $1,198 in 2020-2024, a 10.7% rise. Over the same span the median home value moved 32.5%, from $163,400 to $216,500. 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 Big Horn County

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

Big Horn County and its neighbors, highest effective rate first (Census ACS 2020-2024)
County	Effective rate	Median bill	Median home value
Big Horn County, MT	1.1%	$1,574	$143,400
Washakie County, WY	0.68%	$1,392	$206,000
Johnson County, WY	0.56%	$1,816	$326,800
Park County, WY	0.56%	$2,262	$400,500
Sheridan County, WY	0.55%	$2,177	$394,900
Big Horn County, WY (this county)	0.55%	$1,198	$216,500
Carbon County, MT	0.54%	$2,281	$420,800

How is a home assessed in Big Horn County?

Wyoming assesses homes at 9.5% of market value in every county, Big Horn County included. How Wyoming assesses and reappraises homes.

Is there a homestead exemption in Big Horn County?

Yes, as a percentage. Wyoming exempts twenty-five percent of the fair market value of a single family home, on up to $1,000,000 of value, for owners who live there at least eight months a year. That is the Wyoming rule, and it applies in Big Horn County. Wyoming's exemptions and relief programs in full.

When are property taxes due in Big Horn County?

Wyoming splits the annual bill in two. The first half becomes due September 1 and is payable through November 10, and the second becomes due March 1 and is payable through May 10 of the following year. Pay the entire year by December 31 and no interest or penalty is charged. Anything unpaid after its payable date is delinquent and accrues interest at 18% a year.

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

How to appeal your Big Horn County property assessment

You contest the assessed value with the County Board of Equalization, then the Wyoming State Board of Equalization. The filing deadline is typically 30 days after the county assessor sends your assessment schedule. That is the Wyoming rule; Big Horn County sets the exact dates and forms. The Wyoming appeal process step by step.

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

Work out your own numbers

Sources

Median real estate taxes paid and median home value for Big Horn County, Wyoming: 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.