County market report · FIPS 30069
Petroleum County, MT
Outside a metro area · Population 500 (Census V2020 est.)
Typical value
$189,964
Sep 2026
1M
+0.1%
3M
+0.9%
12M
+2.8%
5Y
+35.0%
10Y
+112.9%
From peak
-1.2%
Peak $192,340 · Apr 2025
Rank US / state
1579 / 38
by 12M change
Zillow Home Value Index
Source: Zillow Home Value Index (ZHVI), all homes, smoothed & seasonally adjusted · data through Sep 2026.
Inflection signal
Price-OnlyNo active signal this month.
Inventory, sales & days on market — Phase 2
Supply and demand confirmation is not yet available.
Yearly values (December)
| Year | ZHVI (Dec) | YoY change |
|---|---|---|
| 2025 | $187,177 | +1.4% |
| 2024 | $184,639 | +17.1% |
| 2023 | $157,621 | +0.5% |
| 2022 | $156,838 | +9.9% |
| 2021 | $142,677 | +16.1% |
| 2020 | $122,932 | +16.7% |
| 2019 | $105,299 | -3.0% |
| 2018 | $108,554 | +20.7% |
| 2017 | $89,912 | +3.7% |
| 2016 | $86,676 | — |