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COUNTY · 1990 CENSUS

Petroleum County

Montana · 519 residents · 1,655.625 sq mi
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The short version

Petroleum County has notably lower household income than the US average, with a median household income of $19,219. Population has held roughly steady since 2000. Median home value is $14,999. The poverty rate of 25.6% is well above the national figure.

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
Population, 1990 – 2024
3844344855355851990201020202024Petroleum County
2024447
1990201020202024
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
RELATED:See current rent listings in Petroleum County on RentDataNow
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)
French1.3%(6)
Romanian1.3%(6)
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
Drill deeper

Places similar to Petroleum County

Borden County
Pop 567
Thomas County
Pop 639
Grant County
Pop 561
Loup County
Pop 570
Places similar to Petroleum County
Head to head

Compare Petroleum County to nearby counties

PETROLEUM COUNTY VS
Musselshell County
Income$58,920+207%
Home value$235,000+1467%
Population5,582+919%
SEE FULL COMPARISON →
PETROLEUM COUNTY VS
Fergus County
Income$63,706+231%
Home value$236,100+1474%
Population11,825+2058%
SEE FULL COMPARISON →
PETROLEUM COUNTY VS
Garfield County
Income$69,583+262%
Home value$169,900+1033%
Population1,148+109%
SEE FULL COMPARISON →
PETROLEUM COUNTY VS
Golden Valley County
Income$58,333+204%
Home value$212,200+1315%
Population844+54%
SEE FULL COMPARISON →
Frequently asked

How many people live in Petroleum County, Montana?

Petroleum County, Montana has about 519 residents according to the 1990 Census.

What is the median household income in Petroleum County, Montana?

The typical household in Petroleum County, Montana earns about $19,219 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 $14,999, and the typical rent is about $291 a month.

How educated are people in Petroleum County, Montana?

About 17.5% 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 25.6% of people in Petroleum County, Montana live below the federal poverty line.

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Explore from here

1 census tract
Census Tract 1
1 ZIP code
ZIP 59087
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DATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024

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