Petroleum County, Montana Population 2020

Petroleum County, Montana's estimated population is 517 with a growth rate of 0.39% in the past year according to the most recent United States census data. Petroleum County, Montana is the 56th largest county in Montana.

Year Population Growth Growth Rate
202051720.39%
201951520.39%
201851320.39%
2017511193.86%
2016492183.80%
2015474-14-2.87%
2014488-16-3.17%
20135040.00%
2012504142.86%
201149010.20%
2010489-30-5.78%
1990519-136-20.76%
1980655-20-2.96%
1970675-219-24.50%
1960894-132-12.87%
19501,026-57-5.26%
19401,083-962-47.04%
19302,0450.00%
2020 Growth Rate
0.39%
County Website
State
Founded
February 25, 1925
County Seat

Petroleum County, Montana Population Growth

Population by Race

Race Population Percentage
White42498.15%
Asian81.85%

Petroleum County, Montana Population Pyramid 2020

Petroleum County, Montana Median Age

52.1


Total

52.4


Male

51.8


Female

Petroleum County, Montana Adults

There are 346 adults, (84 of whom are seniors) in Petroleum County, Montana.

Petroleum County, Montana Age Dependency

64.9

Age Dependency Ratio

32.1

Old Age Dependency Ratio

32.8

Child Dependency Ratio

Petroleum County, Montana Sex Ratio

Female

203

46.99%

Male

229

53.01%

Petroleum County, Montana Households and Families

Petroleum County, Montana Renter vs Owner Occupied by Household Type

Petroleum County, Montana Household Types

Type Owner Renter
Male100%0%
Married73.5%26.5%
All67.4%32.6%
Non Family59.7%40.3%
Female0%100%

67.4%

Rate of Home Ownership

Type Count Average Size Owned
All1872.3167.4
Married982.7173.5
Non Family771.4459.7
Male85.25100
Female43.250

2.85

Average Family Size

2.31

Average Household Size

3.2%

Unmarried (Opposite Sex)

2.1%

Unmarried (Same Sex)

Petroleum County, Montana Education

Education Attained Count Percentage
Less Than 9th Grade0.00%
9th to 12th Grade41.18%
High School Graduate13740.53%
Some College5917.46%
Associates Degree4011.83%
Bachelors Degree6619.53%
Graduate Degree329.47%

Petroleum County, Montana Educational Attainment by Race

The highest rate of high school graduation is among asian people with a rate of 100.00%.

The highest rate of bachelors degrees is among asian people with a rate of 75.00%.

Name Average Male Female
Overall$36,875$38,636$31,339
Less Than High School$$$
High School Grad$30,500$41,250$13,393
Some College$33,333$33,750$32,188
Bachelors Degree$52,083$91,000$50,893
Graduate Degree$35,938$$40,417

$36,875

Average Earnings

$38,636

Average Male

$31,339

Average Female

Petroleum County, Montana Language

Petroleum County, Montana Language by Age

Petroleum County, Montana Language

97.54% of Petroleum County, Montana residents speak only English, while 2.46% speak other languages. The non-English language spoken by the largest group is Other Indo-European, which is spoken by 2.46% of the population.

Petroleum County, Montana Poverty

Petroleum County, Montana Poverty by Race

8.35%

Overall Poverty Rate

8.14%

Male Poverty Rate

8.59%

Female Poverty Rate

Poverty in Petroleum County, Montana

The race most likely to be in poverty in Petroleum County, Montana is White, with 8.52% below the poverty level.

The race least likely to be in poverty in Petroleum County, Montana is White, with 8.52% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 5.00%. Among those working part-time, it was 8.45%, and for those that did not work, the poverty rate was 13.33%.

Name Poverty
Less Than High School25.00%
High School18.98%
Bachelors or Greater2.04%
Some College0.00%
Name Poverty
Female Unemployed0.00%
Female Employed6.36%
Male Employed5.08%
Male Unemployed0.00%

Petroleum County, Montana Income

Petroleum County, Montana Income by Household Type

Name Median Mean
Households$44,688$66,974
Families$62,500$77,265
Married Families$62,857-
Non Families$37,708$48,075

Petroleum County, Montana Marital Status

Petroleum County, Montana Marital Status

Marriage Rates

62.3%

Overall Marriage Rate

62.7%

Male Marriage Rate

61.9%

Female Marriage Rate

Petroleum County, Montana Married by Age and Sex

Petroleum County, Montana Marriage

The age group where males are most likely to be married is 35-44, while the female age group most likely to be married is 55-64.

Petroleum County, Montana Marital Status by Race

Petroleum County, Montana Veterans

43

Number of Veterans

35

Male Veterans

8

Female Veterans

War Veterans
First Gulf War7
World War II6
Vietnam5
Korea1
Second Gulf War
Age Group Veterans
75+14
55 to 6413
35 to 5410
65 to 746
18 to 34

$Petroleum County, Montana Veterans by Education

0.00%

Veteran Poverty Rate

51.16%

Veteran Disability Rate

Petroleum County, Montana Employment Status

66%

Labor Force Participation

64%

Employment Rate

3%

Unemployment Rate

Petroleum County, Montana Place of Birth

Origin of Non-Citizens

Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.

Origin of Naturalized Citizens

67.13%

Born in Montana

98.61%

Native Born

1.39%

Foreign Born

0.00%

Non Citizen

Place of Birth

98.61% of Petroleum County, Montana residents were born in the United States, with 67.13% having been born in Montana. 0.00% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Asia.

  1. US Census City/Town Population estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. Population of States and Counties of the United States: 1790 - 1990