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Get ready-to-use data, reports, analysis, and visualizations covering the demographics of Petroleum County, Montana based on the current United States Census Bureau's 2023 American Community Survey (ACS) 5-Year Estimates.

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Petroleum County, Montana Demographics: Sex by Age

Population by age and sex in Petroleum County, Montana, based on 2023 ACS data
Source: U.S. Census Bureau, ACS 5-Year Estimates

According to the U.S. Census Bureau’s 2023 American Community Survey (ACS) 5-Year Estimates, the total population of Petroleum County, Montana is 401. The median age of the population in Petroleum County, Montana is 51.5. The median age for males is 49.9 years, and for females, it is 52.5 years.

The age distribution of the population in Petroleum County, Montana is as follows:

  • Under 5 years: 3.99%
  • 5–17 years (children): 9.23%
  • 18–24 years (young adults): 4.99%
  • 25–34 years: 2.99%
  • 35–54 years: 34.91%
  • 55–64 years: 15.96%
  • 65 years and over (seniors): 27.93%

The total dependency ratio in Petroleum County, Montana is 69.92%. The youth dependency ratio is 22.46%, and the old-age dependency ratio is 47.46%. In demographic terms, the dependency ratio measures the size of the population typically not in the labor force (children and older adults) relative to those of working age.

Petroleum County, Montana Demographics: Population by Race & Ethnicity

Population by race and ethnicity in Petroleum County, Montana based on 2023 U.S. Census Bureau ACS data
Source: U.S. Census Bureau, ACS 5-Year Estimates

According to the U.S. Census Bureau’s 2023 American Community Survey (ACS) 5-Year Estimates, the breakdown of the population in Petroleum County, Montana by race and ethnicity (racial demographics) is as follows:

  • White: 99.25%
  • Black/African American: 0.00%
  • American Indian and Alaska Native: 0.00%
  • Asian: 0.75%
  • Native Hawaiian or Other Pacific Islander: 0.00%
  • Some other race: 0.00%
  • Two or more races: 0.00%
  • Hispanic or Latino: 0.00%

The diversity index score in Petroleum County, Montana is 1.49%, suggesting a very Low level of diversity.

Petroleum County, Montana Demographics: Household Income

Median and distribution of household income in Petroleum County, Montana based on 2023 American Community Survey (ACS)
Source: U.S. Census Bureau, ACS 5-Year Estimates

According to the U.S. Census Bureau’s 2023 American Community Survey (ACS) 5-Year Estimates, the median household income in Petroleum County, Montana over the past 12 months, adjusted for 2023 inflation, was $59,318.

The distribution of household income by income bracket in Petroleum County, Montana is as follows:

  • Less than $20,000: 11.00%
  • $20,000–$34,999: 14.00%
  • $35,000–$49,999: 19.50%
  • $50,000–$74,999: 19.50%
  • $75,000–$149,999: 26.00%
  • $150,000 or more: 10.00%

Petroleum County, Montana Demographics: Educational Attainment

Educational attainment levels of the population in Petroleum County, Montana based on 2023 American Community Survey (ACS) data
Source: U.S. Census Bureau, ACS 5-Year Estimates

According to the U.S. Census Bureau’s 2023 American Community Survey (ACS) 5-Year Estimates, the breakdown of the total population of Petroleum County, Montana, age 25 and older, by educational level is as follows:

  • Less than high school graduate: 1.22%
  • High school graduate (incl. equivalency): 44.51%
  • Some college or associate's degree: 27.13%
  • Bachelor's Degree: 17.68%
  • Graduate or professional degree: 9.45%

In Petroleum County, Montana, 27.13% of the population has a bachelor's degree or higher, while 98.78% are high school graduates or higher.

Petroleum County, Montana Demographics: Health Insurance Coverage Status by Sex by Age

Health insurance coverage by age and sex in Petroleum County, Montana from the 2023 ACS
Source: U.S. Census Bureau, ACS 5-Year Estimates

According to the U.S. Census Bureau’s 2023 American Community Survey (ACS) 5-Year Estimates, the uninsured rate in Petroleum County, Montana is 6.23%.

Rates of people in Petroleum County, Montana lacking health insurance coverage, by age group and sex are as follows:

  • Under 18: 0.00% of males and 0.00% of females are uninsured
  • Ages 18–34: 9.09% of males and 0.00% of females are uninsured
  • Ages 35–64: 11.39% of males and 8.22% of females are uninsured
  • Ages 65 and older: 0.00% of males and 5.19% of females are uninsured

Petroleum County, Montana Demographics: Nativity and Citizenship Status in the United States

Chart showing the breakdown of U.S. citizenship status and nativity in 2023 for the Petroleum County, Montana, based on ACS 5-Year Estimates
Source: U.S. Census Bureau, ACS 5-Year Estimates

According to the U.S. Census Bureau’s 2023 American Community Survey (ACS) 5-Year Estimates, 100.00% of people living in Petroleum County, Montana are U.S. citizens. This includes individuals born in the United States, Puerto Rico, or U.S. Island Areas, those born abroad to American parents, and those who became citizens through naturalization. 1.00% of the population obtained U.S. citizenship through the naturalization process. In Petroleum County, Montana, 1.00% of the population are naturalized immigrants, who obtained U.S. citizenship through the immigration and naturalization process.

Petroleum County, Montana Demographics: Means of Transportation to Work

How people commute to work in Petroleum County, Montana based on 2023 U.S. Census Bureau ACS data on transportation methods
Source: U.S. Census Bureau, ACS 5-Year Estimates

According to the U.S. Census Bureau’s 2023 American Community Survey (ACS) 5-Year Estimates, the means of transportation to work for the population of Petroleum County, Montana are distributed as follows:

  • Car, truck, or van: 64.52%
  • Public transportation (excluding taxicab): 0.00%
  • Bicycle: 0.00%
  • Walked: 22.12%
  • Taxicab, motorcycle, or other means: 0.00%
  • Worked from home: 13.36%

Frequently Asked Questions

According to the U.S. Census Bureau’s 2023 American Community Survey (ACS) 5-Year Estimates, the age breakdown of the population of Petroleum County, Montana is as follows:

  • Under 5: 3.99%
  • Ages 5–17: 9.23%
  • Ages 18–24: 4.99%
  • Ages 25–34: 2.99%
  • Ages 35–54: 34.91%
  • Ages 55–64: 15.96%
  • 65 or older: 27.93%

According to the U.S. Census Bureau’s 2023 American Community Survey (ACS) 5-Year Estimates, the racial demographics of the population of Petroleum County, Montana are as follows:

  • White: 99.25%
  • Black/African American: 0.00%
  • American Indian and Alaska Native: 0.00%
  • Asian: 0.75%
  • Native Hawaiian or Other Pacific Islander: 0.00%
  • Some other race: 0.00%
  • Two or more races: 0.00%
  • Hispanic or Latino: 0.00%

* Hispanic includes respondents of any race. Other categories are non-Hispanic.

According to the U.S. Census Bureau’s 2023 American Community Survey (ACS) 5-Year Estimates, the distribution of household income in Petroleum County, Montana by income bracket is as follows:

  • Less than $20,000: 11.00%
  • $20,000–$34,999: 14.00%
  • $35,000–$49,999: 19.50%
  • $50,000–$74,999: 19.50%
  • $75,000–$149,999: 26.00%
  • $150,000 or more: 10.00%

According to the U.S. Census Bureau’s 2023 American Community Survey (ACS) 5-Year Estimates, the median household income in Petroleum County, Montana in the past 12 months, in 2023 inflation-adjusted dollars, was $59,318.

According to the U.S. Census Bureau’s 2023 American Community Survey (ACS) 5-Year Estimates, 99.25% of the population in Petroleum County, Montana identifies as White alone (not Hispanic or Latino).

According to the U.S. Census Bureau’s 2023 American Community Survey (ACS) 5-Year Estimates, 0.00% of the population in Petroleum County, Montana identifies as Black or African American alone (not Hispanic or Latino).

According to the U.S. Census Bureau’s 2023 American Community Survey (ACS) 5-Year Estimates, 6.23% of the population of Petroleum County, Montana lacks health insurance coverage.

The detailed breakdown by age and sex is as follows:

  • Under 18: 0.00% of males and 0.00% of females
  • Ages 18–34: 9.09% of males and 0.00% of females
  • Ages 35–64: 11.39% of males and 8.22% of females
  • Ages 65 and over: 0.00% of males and 5.19% of females