Home › Counties › Petroleum County, MT
The median home value in Petroleum County, MT is $210,872 as of 2026-08-31, up 1.48% from a year earlier.
Median Home Value
$210,872
Year-over-Year
+1.48%
National Rank
#1821 of 3071
Petroleum County ranks 45th out of 56 counties in MT by median home price, and is -10.3% below the U.S. national median of $235,072. Within MT, the typical county has a median home value of $296,564, making Petroleum County -28.9% below the MT state median.
The typical home value increased by 5.8%, from $199,297 in May 2026 to $210,872 in Aug 2026.
Monthly Zillow Home Value Index snapshots retained by HomePriceMap. A short history is shown now and grows automatically as each new monthly release arrives.
| Month | Typical home value | Year-over-year change |
|---|---|---|
| May 2026 | $199,297 | -1.0% |
| Jun 2026 | $212,265 | -1.4% |
| Jul 2026 | $201,284 | -0.7% |
| Aug 2026 | $210,872 | +1.5% |
Households here earn a median of $60,208 a year against a typical home value of $210,872 — a price-to-income ratio of 3.5×, above the 3× level usually considered comfortable, but below 5×. That is less affordable than roughly 44% of U.S. counties. (How this is calculated.)
The median home value in Petroleum County is $210,872. That's up 1.48% from a year earlier. That is about 10.3% below the U.S. national county median of $235,072, and makes Petroleum County the 45th most expensive of 56 counties in Montana.
Median household income here is $60,208, so a typical home costs about 3.5× annual household earnings — moderately expensive compared with other U.S. counties.
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