Petroleum County, Montana: commercial real estate data.
Petroleum County, Montana had an estimated 525 residents on July 1, 2024, up 5.6 percent since the 2020 census base of 497, across 1,655 square miles. County output reached $22.7 m in 2024, 11 establishments operate here.
Underlined figures are computed by MMCG Analytics, not published by the agency.
Petroleum County
How many people live in Petroleum County
- Population, American Community Survey 2020-2024447
- Households221
- Average household size2.02
- Median household income$60,208
- Median age51.6
- Median gross rent$800 per month
- Median owner-occupied home value$201,400
- Home value to household income3.3 times
- Annual rent as a share of median income15.9 percent
- Adults 25 and over with a bachelor degree or higher30.8 percent
- Adults 25 and over with a graduate degree10.6 percent
- Adults 25 and over357
- Population under 1866
- Share under 1814.8 percent
- Population 65 and over126
- Share 65 and over28.2 percent
- Working age population, 18 to 64255
- Civilian labor force235
- Unemployment rate0.0 percent
- Labor force participation, adults 18 and over61.7 percent
- Rank by population among Montana counties56th of 56
- Rank by population among US county-equivalents, Puerto Rico included3217th of 3,222
Petroleum County is the 56th largest of 56 Montana counties by population. A median home costs 3.3 times median household income, which is moderately unaffordable by national standards. Residents 65 and over outnumber those under 18, at 28.2 percent against 14.8 percent, which points demand at health care, services and single story product rather than schools.
US Census Bureau, American Community Survey 5-Year Estimates, 2020-2024 5-year.
Petroleum County
Is Petroleum County's population growing?
- Population, July 1, 2024525
- Census 2020 base population497
- Population change since the 2020 census base5.63 percent
- Population change, 2023 to 2024-18
- Births, 20242
- Deaths, 20248
- Natural change, 2024-6
- Net domestic migration, 2024-12
- Net international migration, 20240
- Total net migration, 2024-12
- Cumulative net domestic migration, 2021 to 202439
- Rank by growth among US county-equivalents454th of 3,144
The county has grown 5.63 percent since the 2020 census base. The population fell in 2024 from both sources: deaths exceeded births and more people left than moved in.
US Census Bureau, Population Estimates Program, Vintage 2024, Vintage 2024, estimates 2020 to 2024.
Petroleum County
What is the Petroleum County economy?
- County GDP, 2024$22.7 m
- County GDP, 2023$21.6 m
- GDP change, 2023 to 20245.5 percent
- GDP change over five years81.3 percent
- Rank by GDP among the Montana areas BEA publishes56th of 56
- Rank by GDP among the US county areas BEA publishes3114th of 3,127
- GDP per resident$50,872
Output grew 5.5 percent in the latest year and 81.3 percent over five, which is the trend line a lender will read behind any single year figure.
US Bureau of Economic Analysis, Regional, table CAGDP2, CAGDP2, through 2024.
Petroleum County
Employment by industry in Petroleum County
- Covered employment, annual average100
- Establishments reporting26
- Average annual pay$34,642
- Average weekly wage$666
- Health care and social assistance, employment5
- Health care and social assistance, average annual pay$10,151
| Sector | Employment | Establishments | Average annual pay |
|---|---|---|---|
| Health care and social assistance | 5 | 3 | $10,151 |
Health care and social assistance is the largest private sector at 5 jobs, 5.0 percent of covered employment.
US Bureau of Labor Statistics, Quarterly Census of Employment and Wages, 2024 annual averages.
Petroleum County
How many businesses are in Petroleum County?
- Establishments, all industries11
- Employment at those establishments24
- Annual payroll$507,000
- Establishments per 1,000 residents24.6
These are counts of establishments physically operating in the county, not listings, so they are the supply side a feasibility study measures demand against. County Business Patterns counts private establishments with paid employees in March 2023, while the Quarterly Census of Employment and Wages above counts every unemployment-insured employer, public ones included, as a 2024 annual average, so the two establishment and employment counts differ.
US Census Bureau, County Business Patterns, 2023.
Petroleum County
How large is Petroleum County?
- Land area1,655 sq mi
- Rank by land area among Montana counties43rd of 56
- Width, east to west42.7 mi
- Height, north to south58.6 mi
- Geographies sharing a boundary5
- Residents per square mile of land0
- Establishments per square mile0.01
US Census Bureau county boundary geometry, TIGER, adjacency computed from shared boundary vertices, TIGER county boundaries. US Census Bureau, American Community Survey 5-Year Estimates, 2020-2024 5-year. US Census Bureau, County Business Patterns, 2023.
Petroleum County
Flood risk in Petroleum County
- Participation of the county's own NFIP community Petroleum County, unincorporated areasParticipating, community 300161
- Communities in the county in the NFIP Community Status Book2
- Of those, participating in the NFIP1
- NFIP participation rate50.0 percent
- Communities carrying a CRS class0
- Radon levels in Petroleum County, EPA zone predicted average indoor radon screening level from 2 to 4 pCi/LZone 2
The county's own community in the status book, unincorporated Petroleum County (community 300161), participates in the National Flood Insurance Program and carries no Community Rating System class, so no CRS premium discount applies there. The EPA places Petroleum County in radon zone 2, a predicted average indoor radon screening level from 2 to 4 pCi/L. The zone is a screening prediction for the county and does not substitute for a test at an address. 50.0 percent of the county's listed communities participate in the National Flood Insurance Program, per Federal Emergency Management Agency, NFIP Community Status Book (OpenFEMA), as of 2026-09-26.
Federal Emergency Management Agency, NFIP Community Status Book (OpenFEMA), as of 2026-09-26. US EPA, Map of Radon Zones, county spreadsheet, 2024-05 publication, EPA 402/A-16/001.
Coverage
What this page does not hold.
Traffic counts, zoning and the flood zone at an address are not on this page; they resolve at the address in the platform. How this page was built →
Feasibility studies
When a Petroleum County site needs a document a lender will accept.
The same data layer behind this page is the one the studies are written from. A study for a Petroleum County site starts with the figures you are reading, carrying the same source and period into the credit file.
- Population, American Community Survey 2020-2024447
- Households221
- Average household size2.02
- Median household income$60,208
- Median age51.6
Common questions
Petroleum County questions, answered from the record.
How many people live in Petroleum County, Montana?
The Census Bureau estimates 525 residents on July 1, 2024 (US Census Bureau, Population Estimates Program, Vintage 2024). The American Community Survey 2020-2024 five-year estimate is 447, in 221 households, ranking 56th of 56 Montana counties. Source: US Census Bureau, American Community Survey 5-Year Estimates, 2020-2024 5-year.
Is Petroleum County's population growing?
The population has grown 5.63 percent since the 2020 census base of 497, to 525 on July 1, 2024. In 2024 there were 2 births against 8 deaths, with net migration of -12. Source: US Census Bureau, Population Estimates Program, Vintage 2024, Vintage 2024, estimates 2020 to 2024.
What is the median household income in Petroleum County?
$60,208. The median owner-occupied home is valued at $201,400, which is 3.3 times income, and median gross rent is $800 per month. Source: US Census Bureau, American Community Survey 5-Year Estimates, 2020-2024 5-year.
How many businesses are in Petroleum County?
11 establishments, employing 24 people with an annual payroll of $507,000. These are establishments physically operating in the county, not listings. Source: US Census Bureau, County Business Patterns, 2023.
What is employment by industry in Petroleum County?
Health care and social assistance is the largest private sector at 5 jobs, 5.0 percent of covered employment. Covered employment averages 100 jobs at an average annual pay of $34,642, or $666 a week. Source: US Bureau of Labor Statistics, Quarterly Census of Employment and Wages, 2024 annual averages.
What is the radon zone for Petroleum County?
Zone 2, a predicted average indoor radon screening level from 2 to 4 pCi/L. Source: US EPA, Map of Radon Zones, county spreadsheet, 2024-05 publication, EPA 402/A-16/001.
Are traffic counts available for Petroleum County on this page?
No. Annual average daily traffic resolves in the platform rather than in this dataset, so no AADT figure is printed here. It is a gap we know about rather than a figure we estimated.
Is zoning published for Petroleum County?
No. Nothing on this page presents parcel level zoning, and where a statutory framework applies it is marked as the statewide frame, to be confirmed locally.
Petroleum County
Cities and places in Petroleum.
1 Census place lies wholly or partly in Petroleum County. It carries enough published place level data for a page of its own and is linked.
| Place | Type | Population | SBA 7(a) approvals, projects in this county | Lies in |
|---|---|---|---|---|
| Winnett | town | 204 | None recorded | Wholly in this county |
Nearby