Petroleum County vs Treasure County

A side-by-side comparison of Petroleum County and Treasure County: population, income, housing, and more.

Petroleum County and Treasure County are counties in Montana. This page compares them across population, income, housing, education, commuting, and how each has changed since 2019.

Treasure County has the higher population (761 vs 401 in Petroleum County). Treasure County has the higher median household income ($73,036 vs $59,318 in Petroleum County). Treasure County has the higher median home value ($215,300 vs $173,700 in Petroleum County).

Population, income & housing

	Petroleum County	Treasure County
Population	401	761
Median age	51.5 yrs	53.4 yrs
Median household income	$59,318	$73,036
Median home value	$173,700	$215,300
Median gross rent	$769	$992
Housing units	295	479
Homeownership rate	77.0%	66.5%
Bachelor's degree or higher	27.1%	32.8%
Unemployment rate	0.9%	1.1%

Trends (ACS 5-year, 2019–2023)

	Petroleum County	Treasure County
Population	453 → 401 (-11.5%)	668 → 761 (+13.9%)
Median household income	$51,250 → $59,318 (+15.7%)	$43,047 → $73,036 (+69.7%)
Median home value	$181,300 → $173,700 (-4.2%)	$118,200 → $215,300 (+82.1%)
Median gross rent	$490 → $769 (+56.9%)	$645 → $992 (+53.8%)

Petroleum County

Population

453401

Median household income

$51,250$59,318

Median home value

$181,300$173,700

Median gross rent

$490$769

Treasure County

Population

668761

Median household income

$43,047$73,036

Median home value

$118,200$215,300

Median gross rent

$645$992

Age & race/ethnicity

Age distribution (share)

	Petroleum County	Treasure County
Under 5	4.0%	3.7%
5 to 17	9.2%	12.1%
18 to 24	5.0%	4.5%
25 to 34	3.0%	15.9%
35 to 44	14.0%	9.1%
45 to 54	20.9%	8.1%
55 to 64	16.0%	24.0%
65 to 74	16.7%	12.2%
75 and over	11.2%	10.4%

Race & ethnicity (share)

	Petroleum County	Treasure County
White (non-Hispanic)	99.3%	92.9%
Black or African American	0.0%	0.0%
American Indian & Alaska Native	0.0%	0.1%
Asian	0.7%	1.3%
Native Hawaiian & Pacific Islander	0.0%	0.0%
Some other race	0.0%	0.0%
Two or more races	0.0%	0.0%
Hispanic or Latino	0.0%	5.7%

Educational attainment (age 25+)

Share of adults 25+

	Petroleum County	Treasure County
No high school diploma	1.2%	5.1%
High school graduate	44.5%	28.5%
Some college or associate's	27.1%	33.6%
Bachelor's degree	17.7%	28.7%
Graduate or professional degree	9.5%	4.1%

Commute to work

How workers get to work (share)

	Petroleum County	Treasure County
Drove alone	57.1%	73.2%
Carpooled	7.4%	1.6%
Public transit	0.0%	0.0%
Walked	22.1%	1.4%
Bicycle	0.0%	0.9%
Worked from home	13.4%	20.6%
Other means	0.0%	2.3%

Housing

Units in structure (share)

	Petroleum County	Treasure County
1-unit, detached	77.3%	82.5%
1-unit, attached	0.7%	0.0%
2 to 4 units	0.0%	1.3%
5 to 19 units	0.0%	2.1%
20 or more units	0.0%	0.0%
Mobile home & other	22.0%	14.2%

Poverty & households

	Petroleum County	Treasure County
Poverty rate	6.5%	10.8%
Average household size	2.01	1.99
Mean commute (minutes)	14	17
Median year structure built	1978	1970