Petroleum County, Montana
Out-of-state owners outnumber in-state absentee owners in Petroleum County, MT: 486 ownership records (11%) carry a mailing address outside Montana, against 0 absentee owners who stayed in state, per the 2026-06 cadastral Montana State Library cadastral data. In total the county carries 4,523 parcels, including 2,727 vacant land parcels. The median vacant parcel is 153.9 acres.
Source: Montana State Library cadastral (2026-06 cadastral)
Petroleum County by the numbers
| Total parcels | 4,523 |
| Vacant land parcels | 2,727 |
| Vacant land | 2,727 |
| Absentee owners | 432 (10% of mailable owners) |
| Out-of-state owners | 486 (11% of mailable owners) |
| Median vacant parcel | 153.9 acres (middle half 40–320) |
Source: Montana State Library cadastral (2026-06 cadastral)
Available lead lists in Petroleum County
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Request a custom list for this countyPetroleum County land data: common questions
How many parcels are in Petroleum County, MT?
Petroleum County, MT has 4,523 parcels in the 2026-06 cadastral Montana State Library cadastral data.
How many absentee land owners are in Petroleum County, MT?
432 ownership records in Petroleum County list a mailing address away from the property — 10% of the county's 4,495 mailable owners, per the 2026-06 cadastral Montana State Library cadastral data.
How many out-of-state owners hold property in Petroleum County, MT?
486 ownership records in Petroleum County carry a mailing address outside Montana — 11% of mailable owners, per the 2026-06 cadastral Montana State Library cadastral data.
How many vacant land parcels are in Petroleum County, MT?
Petroleum County, MT has 2,727 vacant land parcels across the MT State Library cadastral vacant land-use groups, per the 2026-06 cadastral Montana State Library cadastral data.
How big is a typical vacant parcel in Petroleum County, MT?
The median vacant parcel in Petroleum County is 153.9 acres; the middle half ranges from 40 to 320 acres, per the 2026-06 cadastral Montana State Library cadastral data.
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County scores and notes are research starting points. All property, ownership, tax, zoning, environmental, and mailing data should be independently verified before purchase decisions or outreach campaigns.
Land Lead Directory provides research starting points for land investors and acquisition teams. We do not guarantee deal quality, owner motivation, data completeness, property condition, zoning, access, environmental status, or investment outcomes. Verify all information independently before making offers, purchasing property, or launching outreach campaigns.