United States › Montana › Petroleum County COUNTY · 2020 ACS
Petroleum County Montana · 496 residents · 1,656 sq mi
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The short version
Petroleum County is a county of 496 people in Montana. At a median age of 53.4, this is an older place than the country as a whole. 78% of homes are owner-occupied. Getting to work takes 13 minutes on average. Renters pay $478 a month at the median. The foreign-born share is 2%.
At a glance
Lower income
below the US median
US median: $66,278
Older
median age 53.4
US median: 38.8
Less educated
26% hold a bachelor's degree
US average: 33%
Less affordable
home values up 103%, inflation adjusted
US median home: $265,253
Section 01
Population & growth from 41.1 in 2000
US average: 38.8
Population, 1990 – 2024
384 434 485 535 585 1990 2000 2010 2020 2024 Petroleum County Age distribution, 2020
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Section 02
Income & economy $40,000
+10%inflation adjusted, since 2000
from $24,107 in 2000
US average: $66,278
from $15,986 in 2000
US average: $35,364
Households earning $100K+
from 11.4% in 2009
US average: 43.9%
from 23.2% in 2000
US average: 12.8%
Workforce by industry, 2020
Agriculture, forestry, fishing 56.6%
Professional, scientific, technical 5.6%
Arts, entertainment, food 0.8%
Public administration 0.8%
Transportation & warehousing 0%
Education & health services 0%
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$155,700
+103%inflation adjusted, since 2000
from $51,000 in 2000
US average: $265,253
$478
−4%inflation adjusted, since 2000
from $330 in 2000
US average: $1,124
from 74.4% in 2000
21.9% rent
from 2.33 people in 2009
US average: 2.61
from 2.4 in 2009
Years of local income it takes to buy a local home, on a scale of about 0 to 15. Lower is more affordable.
Section 04
Race & ethnicity 2000
White, non-Hispanic 98.2%(484)
2020
White, non-Hispanic 94%(466)
No data for the years selected.
Section 04 · Origins
Detailed origins & ancestry Ancestry
+ 4 more ancestry groups with data from 17.4% in 2000
US average: 32.9%
High school or higher
from 82.9% in 2000
US average: 88.5%
from 0.9% in 2000
US average: 12.7%
Section 06
Commute & transportation from 10.6 min in 2000
US average: 26.9
from 58.7% in 2009
US average: 75.1%
from 2.3% in 2009
US average: 8.4%
Section 07
Work & employment from 2.7% in 2011
US average: 5.4%
from 59.5% in 2011
US average: 63.4%
Women 20-64 in the labor force
US average: 73.3%
from 45.3% in 2009
US average: 39.3%
Section 08
People & community from 0.0% in 2009
US average: 13.5%
from 24.5% in 2013
US average: 8.8%
Computer in household
US average: 91.9%
Marital status (2024)
SHARE WITHIN EACH SEX · POPULATION 15 AND OVER · 2024
Section 09
Health coverage from 24.5% in 2013
US average: 8.8%
Direct-purchase
US average: 13.7%
VA health care
US average: 2.3%
Any private
US average: 68.1%
Any public
US average: 35.2%
Shares are "alone or in combination": a person with both Medicare and Medicaid counts in each, so categories overlap and do not sum to 100%.
Section 09 · Service history
Veterans Veterans by period of service, 2020
Gulf War (2001 or later) 0%(0)
Gulf War (1990s) 51.4%(18)
Share of the 35 veterans here. A veteran who served across eras counts in each, so shares can total more than 100%. Peacetime-only service is included in the total but not shown as an era.
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Drill deeper
Places similar to Petroleum County Head to head
Compare Petroleum County to nearby counties PETROLEUM COUNTY VS
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PETROLEUM COUNTY VS
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PETROLEUM COUNTY VS
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PETROLEUM COUNTY VS
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Population 844 +54%
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Frequently asked
How many people live in Petroleum County, Montana? Petroleum County, Montana has about 496 residents according to the 2020 American Community Survey.
What is the median household income in Petroleum County, Montana? The typical household in Petroleum County, Montana earns about $40,000 a year. Half of households make more than that, and half make less.
Is Petroleum County, Montana expensive? In Petroleum County, Montana, the median home is worth about $155,700, and the typical rent is about $478 a month.
How educated are people in Petroleum County, Montana? About 26.5% of adults age 25 and over in Petroleum County, Montana hold a bachelor's degree or higher.
What is the poverty rate in Petroleum County, Montana? About 12.1% of people in Petroleum County, Montana live below the federal poverty line.
Has Petroleum County, Montana grown since 1990? Yes, Petroleum County, Montana has shrunk since 1990. The population has lost about 23 residents, a change of about -4 percent over that period.
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