Petroleum County, Montana

Petroleum County is a county located in the state of Montana in the United States. The the county seat ( county seat ) is located in Winnett.

Demographic data

According to the census of 2000, there were 493 people in the county. There were 211 households and 136 families. The population density was less than 1 inhabitant per square kilometer. The racial the population was composed of 99.19 % White, 0.00 % African American, 0.20 % Native American, 0.00 % Asian, 0.00% Pacific Islander residents from the and 0.20 % from other races groups; 0.41% were descended from two or more races. 1.22 % of the population were Hispanic or Latino of any race.

Of the 211 households out of which 31.30 % have children under the age of 18 living with them. 55.90 % were married couples living together, 5.70 % had a female householder with no husband. 35.10 % were non-families. 31.30 % of all households and 17.50% had someone living alone at the age of 65 years or older. The average household size was 2.34 and the average family size was 2.95 persons.

Based on the county the population was spread out with 26.00 % under the age of 18, 6.10 % from 18 to 24, 22.70% from 25 to 44 years, 28.20 % between 45 and 64 years and 17.00% were 65 years old or older. The average age was 41 years. For every 100 females there were 110.70 males to 100 females age 18 and over, there were 111.00 males.

The median income for a household was $ 24,107, and the median income for a family was $ 32,667. Males had a median income of $ 20,694, women $ 17,188. The per capita income was $ 15,986. 23.20 % of the population and 21.00% of families are below the poverty line. 25.60 % of those under age 18 and 17.30 % were 65 years or older.

Places in County

  • Cat Creek
  • Flat Willow
  • Kelley
  • Upgrade
  • Winnett
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