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Petroleum County, Montana: property tax rate, home values and income

Effective property tax rate

0.73%

27th highest of 56 counties in Montana

Median home value

$173,700

46th highest in Montana

Median household income

$59,318

32nd highest in Montana

Population

401

Census ACS 2023

Sources: US Census Bureau, American Community Survey 5-year estimates · Updated 11/03/2026

In Petroleum County, Montana the effective property tax rate is 0.73%. The median homeowner pays $1,261 a year in real estate taxes on a home with a median value of $173,700. That rate is the 27th highest of the 56 Montana counties with published data, and the 1860th highest of 3,132 counties in the United States.

Property tax in Petroleum County

The effective rate is the median real estate tax paid divided by the median home value. The Montana statewide average is 0.75%, so Petroleum County is below it. Applying this county's rate to other home prices gives a rough idea of the yearly bill; actual bills depend on the school district, exemptions and the assessed value.

Home valueEstimated tax per yearPer month
$173,700 (county median)$1,260$105
$200,000$1,460$122
$300,000$2,190$183
$400,000$2,920$243
$500,000$3,650$304

Home values and incomes

The median home value is $173,700 (46th highest in Montana, 1584th highest nationally) and the median household income is $59,318. Homes cost about 2.9 times a typical household's yearly income. Median gross rent is $769 a month. 77% of occupied homes are owner-occupied. Homeowners with a mortgage pay a median of $1,460 a year for insurance. For comparison, the Montana statewide median home value is $467,275.

Counties near Petroleum County in the Montana property tax ranking

CountyEffective rateMedian home value
Lewis and Clark County0.81%$358,200
Chouteau County0.78%$185,100
Richland County0.75%$259,000
Petroleum County0.73%$173,700
Powell County0.71%$255,700
Wibaux County0.71%$92,300
Meagher County0.70%$244,400

Frequently asked questions

What is the property tax rate in Petroleum County, Montana?

The effective property tax rate is 0.73% of home value per year, the 27th highest of 56 counties in Montana (Census ACS 2023 5-year estimates).

How much is property tax on a $300,000 home in Petroleum County?

At the county's effective rate of 0.73%, about $2,190 a year (roughly $183 a month). Your actual bill depends on the assessed value, your school district and exemptions.

What is the median home value in Petroleum County?

The median home value is $173,700 (Census ACS 2023 5-year estimates, owner-occupied homes).

What is the median household income in Petroleum County?

The median household income is $59,318 (Census ACS 2023 5-year estimates).