COUNTY · 1990 CENSUS

Petroleum County

Montana · 519 residents · 1,656 sq mi

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The short version

With 519 people, Petroleum County is a county in Montana. Getting to work takes 48 minutes on average. Median home value sits at $14,999. The poverty rate is 25.6%, above the 13.2% national rate. 76% of homes are owner-occupied. The median household earns $19,219, about 36% below the national median.

At a glance

Lower income

below the US median

US median: $30,130

Older

median age 35.8

US median: 33.0

Average education

18% hold a bachelor's degree

US average: 20%

More affordable

home values down 61%, inflation adjusted

US median home: $93,722

Section 01

Population & growth

Total population

519

+5%vs 2000

vs 493 in 2000

1990 – 2025

Median age

35.8

−13%vs 2000

vs 41.1 in 2000

US average: 33.0

Land area

1,656 sq mi

Population, 1990 – 2024

2024447

Age distribution, 1990

Under 58.3%(43)

US avg: 7.3%

5 to 96.9%(36)

US avg: 7.3%

10 to 146.9%(36)

US avg: 6.9%

15 to 196.7%(35)

US avg: 7.1%

20 to 246.2%(32)

US avg: 7.5%

25 to 3413.7%(71)

US avg: 17.5%

35 to 4416.8%(87)

US avg: 15.1%

45 to 5410.2%(53)

US avg: 10.2%

55 to 6410.6%(55)

US avg: 8.5%

65 to 748.7%(45)

US avg: 7.3%

75 to 844.2%(22)

US avg: 4%

85 and over0.8%(4)

US avg: 1.2%

BAR + DOT: THIS PLACE · TICK: US AVERAGE

Section 02

Income & economy

Median household income

$19,219

+5%inflation adjusted, since 2000

vs $24,107 in 2000

US average: $30,130

1990 – 2024

Per capita income

$9,876

−38%vs 2000

vs $15,986 in 2000

US average: $14,340

Poverty rate

25.6%

+2.4 ptsvs 2000

vs 23.2% in 2000

US average: 13.2%

Section 03

Housing

Median home value

$14,999

−61%inflation adjusted, since 2000

vs $51,000 in 2000

US average: $93,722

1990 – 2024

Median gross rent

$291

+16%inflation adjusted, since 2000

vs $330 in 2000

US average: $450

Owner-occupied

76.1%

+1.7 ptsvs 2000

vs 74.4% in 2000

23.9% rent

Section 04

Race & ethnicity

2000

White, non-Hispanic98.2%(484)

Black0%(0)

Hispanic / Latino1.2%(6)

Asian0%(0)

Other0%

1990

White, non-Hispanic98.8%(513)

Black0%(0)

Hispanic / Latino0%(0)

Asian0%(0)

Other1.2%(6)

No data for the years selected.

Section 04 · Origins

Detailed origins & ancestry

Detailed origin tables are available for 2024; showing 2024 data.

Asian origin

Japanese0.7%(3)

Ancestry

German34.7%(155)

American19.7%(88)

English17.9%(80)

Irish11.2%(50)

Norwegian8.3%(37)

Polish2.2%(10)

Scottish2%(9)

French1.3%(6)

Romanian1.3%(6)

Scotch-Irish0.9%(4)

Danish0.2%(1)

Finnish0.2%(1)

RANKED:Largest German population · Largest American population · Largest English population · Largest Irish population · Largest Norwegian population

Section 05

Education

Bachelor's degree or higher

17.5%

+0.1 ptsvs 2000

vs 17.4% in 2000

US average: 20.3%

High school or higher

81.9%

−1.0 ptsvs 2000

vs 82.9% in 2000

US average: 75.2%

Graduate degree

2.1%

+1.2 ptsvs 2000

vs 0.9% in 2000

US average: 7.1%

Section 06

Commute & transportation

Average commute

48.3 min

+356%vs 2000

vs 10.6 min in 2000

US average: 21.9

Section 07

Work & employment

No data for the years selected.

Section 08

People & community

No data for the years selected.

Marital status (2024)

Men 15+

Never married9.4%(19)

Married65%(132)

Widowed4.9%(10)

Divorced20.7%(42)

Women 15+

Never married8.8%(16)

Married74%(134)

Widowed5%(9)

Divorced12.2%(22)

SHARE WITHIN EACH SEX · POPULATION 15 AND OVER · 2024

Section 09

Health coverage

Showing 2024 (the nearest year with coverage data).

Uninsured

6.7%

−17.8 ptssince 2013

from 24.5% in 2013

US average: 8.4%

Employer-based

30.4%

+2.8 ptssince 2020

from 27.6% in 2020

US average: 54.8%

Direct-purchase

40.7%

−4.6 ptssince 2020

from 45.3% in 2020

US average: 13.8%

Medicare

28.2%

+9.0 ptssince 2020

from 19.2% in 2020

US average: 18.4%

Medicaid

15.7%

−3.3 ptssince 2020

from 19.0% in 2020

US average: 20.9%

VA health care

2.9%

−0.1 ptssince 2020

from 3.0% in 2020

US average: 2.2%

Any private

74.5%

−0.1 ptssince 2020

from 74.6% in 2020

US average: 67.1%

Any public

43.4%

+3.7 ptssince 2020

from 39.7% in 2020

US average: 36.7%

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, 2024

Gulf War (2001 or later)4.8%(3)

US avg: 26.4%

Gulf War (1990s)56.5%(35)

US avg: 24.3%

Vietnam era40.3%(25)

US avg: 33.1%

Korean War0%(0)

US avg: 4.5%

World War II0%(0)

US avg: 1%

Share of the 62 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.

BAR + DOT: THIS PLACE · TICK: US AVERAGE

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