Petroleum County Property Taxes
Petroleum County, Montana
Effective Tax Rate
0.00%
30% below state avgMedian Annual Tax
$0
$105/mo escrow
Estimate Your Tax
Annual Tax
$0
Monthly
$0
Eff. Rate
0.73%
At a Glance
Median Home Value
$173,700
State avg ▼ $251,520
Tax w/ Mortgage/yr
$1,672
$139/mo escrow
Tax w/o Mortgage/yr
$1,107
$92/mo
State Tax Rate Rank
#30
of 56 counties (1 = lowest)
Similar tax rates
Data Story
About Property Taxes in Petroleum County, Montana
Petroleum County taxes slightly above average
Petroleum County's effective rate of 0.726% sits modestly above the national median of 0.84%, placing it roughly in the 45th percentile nationally. The median property tax is $1,261, well below the national median of $2,690, reflecting smaller homes in this rural county.
Middle-of-the-pack within Montana
At 0.726%, Petroleum County's rate sits just below Montana's state average of 0.767%, ranking it in the middle tier of Montana counties. This makes Petroleum reasonably competitive within the state, though not among the very lowest-taxed regions.
Median rates compared to region
Petroleum County's 0.726% rate falls between Musselshell (0.625%) and Powell (0.708%), making it roughly middle-ground regionally. The broader eight-county area averages around 0.75%, so Petroleum sits right at the regional norm.
Median home costs $1,261 yearly
A typical Petroleum County home valued at $173,700 generates $1,261 in annual taxes at the 0.726% rate. Owners with mortgages pay $1,672, while outright owners pay $1,107—a notable gap driven by assessment methodology and timing differences.
Overassessment appeals are your right
In rural Montana counties like Petroleum, assessment errors are common because comparable sales data is sparse. If you believe your home's assessed value exceeds its true market worth, contact the county assessor about filing an appeal—it's free and worth investigating.
How Petroleum County Compares
Median Annual Property Tax
Petroleum County
0.73%
Effective rate
Montana Avg
0.72%
Effective rate
National Avg
0.91%
Effective rate
Frequently Asked Questions
What is the property tax rate in Petroleum County, Montana?
How much are property taxes in Petroleum County?
How does Petroleum County compare to the Montana average?
What is the median home value in Petroleum County, Montana?
Why is Petroleum County property tax rate higher than the Montana average?
How does Petroleum County rank for property taxes in Montana?
Counties with Similar Tax Rates
Nearby Counties
Other Counties in Montana
Madison County
0.41%
Carter County
0.44%
Judith Basin County
0.45%
Sweet Grass County
0.49%
Golden Valley County
0.51%
Ravalli County
0.53%
Carbon County
0.55%
Sanders County
0.55%
Mineral County
0.55%
Jefferson County
0.56%
Park County
0.57%
Fallon County
0.57%
Lincoln County
0.58%
Gallatin County
0.60%
Stillwater County
0.60%
Data updated: March 2026
Data from U.S. Census Bureau, American Community Survey 2019-2023 5-Year Estimates. Effective tax rate is calculated as median property tax divided by median home value.