Montana Outline Montana Demographics by Cubit

Montana / Yellowstone County

Get Yellowstone County, MT Demographics

Who knew Yellowstone County demographics could be so sexy? Check out Census 2010 data and current American Community Survey data for Yellowstone County, MT. Feast your eyes on statuesque tables, curvacous pie charts and titillating trend lines. We dare you to call Yellowstone County demographic data boring!

Quick Facts

Population 2010 Census 147,972 #1 in the state
Median Income 2010 for Households $48,641
Poverty Rate 11.2%
Median Age 38.3 years
Largest Racial or Ethnic Group White
Sources: Census 2010 SF1 & 2006-2010 American Community Survey 5 year estimates

Yellowstone County Demographics Summary

population icon With 147,972 people, Yellowstone County is the 1st most populated county in the state of Montana out of 56 counties. But watch out, Yellowstone County, because Missoula County with 109,299 people and Flathead County with 90,928 people are right behind you.

income icon In 2010, the median household income of Yellowstone County residents was $48,641. Yellowstone County households made slightly more than McCone County households ($48,167) and Flathead County households ($44,998) However, 11.2% of Yellowstone County residents live in poverty.

age icon The median age for Yellowstone County residents is 38.3 years young.

race icon The largest Yellowstone County racial/ethinic groups are White (88.2%) followed by Hispanic (4.7%) and American Indian (3.6%).

Yellowstone County Race / Ethnic Groups

Non-Hispanic Population
White 130,463
Black 852
American Indian 5,377
Asian 915
Pacific Islander 104
Some Other Race 84
Two or More Races 3,222
Hispanic 6,955
Source: Census 2010 SF1 Table P9 Hispanic or Latino or Not Hispanic or Latino by Race
  • White
  • Black
  • Indian
  • Asian
  • Pacific Islander
  • Some Other Race
  • Two or More Races
  • Hispanic

3 Largest Yellowstone County Race / Ethnic Groups

  • The Yellowstone County White population is 130,463 persons or 88.2%.
  • The Yellowstone County Hispanic population is 6,955 persons or 4.7%.
  • The Yellowstone County American Indian population is 5,377 persons or 3.6%.

Note: the US Census Bureau defines race and ethnicity differently from the way most people think about race and ethnicity. In a nutshell, a person's origin (or what used to be called ethnicity) is either Hispanic or Non-Hispanic. And a person's race can be white, black or African American, American Indian or Alaska Native, Asian, Native Hawaiian or Other Pacific Islander, Some Other Race or Two or More Races. For more details about race and origin data, google "US Census Bureau race and origin Census 2010."


Yellowstone County Median Age

Fellas, you need to start eating your Wheaties™. Yellowstone County ladies have a higher median age.

Median Age 38.3 years
Median Age - Females 39.4 years
Median Age - Males 37.1 years
Source: Census 2010 SF1 Table P13 Median Age by Male/Female

Under 18 and Over 65 Age Breakdown

With 23.7% of the Yellowstone County population under 18, Yellowstone County has more spring chickens than a KFC ® at dinner time.

Persons Under 18 23.7%
Persons Over 65 14.1%
Everyone else 62.2
Source: Census 2010 SF1 Table P12 Male/Female by Age
  • Under 18
  • Over 65
  • Everyone else

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