Cost of Living in Petroleum County, MT

Modeled annual cost: $57,464.

Median family income: $78,750.

Affordability Snapshot

MT County Median

$51,262

State Rank

8thMost expensive counties in MT out of 56See Montana county rankings

Median Income

$78,750

Location Type

Not Metropolitan

Biggest category:

Transport is the biggest expense in Petroleum County, MT.

$15,789 per year.

Cost breakdown

Total

$57,464

Per year

  • Transport:$15,789
  • Housing:$13,200
  • Taxes:$12,407
  • Healthcare:$6,450
  • Other Costs:$5,406
  • Food:$4,212
  • Childcare:$0

* Percentages may not add up to 100% due to rounding.

Cheaper counties in Montana

1Phillips County, MT
$45,450
2Deer Lodge County, MT
$46,036
3Cascade County, MT
$46,679
4Powell County, MT
$47,459
5Beaverhead County, MT
$47,953

Popular comparisons in Montana

See how Petroleum County, MT compares across the country.

Explore our cost of living interactive map to compare Petroleum County, MT with multiple counties in the United States.

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Cost of Living in Petroleum County, MT (2026)