Yellowstone County, Montana Population 2020

Yellowstone County, Montana's estimated population is 159,229 with a growth rate of 0.84% in the past year according to the most recent United States census data. Yellowstone County, Montana is the largest county in Montana.

Year Population Growth Growth Rate
2018160,1379080.57%
2017159,2291,3260.84%
2016157,9031,3690.87%
2015156,5341,2590.81%
2014155,2751,5040.98%
2013153,7712,1491.42%
2012151,6221,8741.25%
2011149,7481,3600.92%
2010148,38834,96930.83%
1990113,4195,3844.98%
1980108,03520,66823.66%
197087,3678,35110.57%
196079,01623,14141.42%
195055,87514,69335.68%
194041,18210,39733.77%
193030,7851,1854.00%
192029,6006,65629.01%
191022,94416,732269.35%
19006,2124,147200.82%
18902,0650.00%

How Many People Live in Yellowstone County, Montana?

159,229

Yellowstone County, Montana Population Growth

Population by Race

Race Population Percentage
White143,16590.72%
American Indian and Alaska Native6,9424.40%
Two or More Races4,5102.86%
Asian1,0080.64%
Black or African American9930.63%
Some Other Race9870.63%
Native Hawaiian and Other Pacific Islander2110.13%

Yellowstone County, Montana Population Pyramid 2020

Yellowstone County, Montana Median Age

38.2


Total

36.9


Male

39.4


Female

Yellowstone County, Montana Adults

There are 120,595 adults, (25,450 of whom are seniors) in Yellowstone County, Montana.

Yellowstone County, Montana Age Dependency

65.9

Age Dependency Ratio

26.7

Old Age Dependency Ratio

39.1

Child Dependency Ratio

Yellowstone County, Montana Sex Ratio

Female

80,043

50.72%

Male

77,773

49.28%

Yellowstone County, Montana Households and Families

Yellowstone County, Montana Renter vs Owner Occupied by Household Type

Yellowstone County, Montana Household Types

Type Owner Renter
Married84.5%15.5%
All68.3%31.7%
Male55.6%44.4%
Non Family53.2%46.8%
Female50.8%49.2%

68.3%

Rate of Home Ownership

Type Count Average Size Owned
All65,0252.3768.3
Married31,5133.0684.5
Non Family24,6571.2753.2
Female5,6353.0650.8
Male3,2202.9855.6

2.97

Average Family Size

2.37

Average Household Size

6.8%

Unmarried (Opposite Sex)

0.3%

Unmarried (Same Sex)

Yellowstone County, Montana Education

Education Attained Count Percentage
Less Than 9th Grade1,7951.67%
9th to 12th Grade4,9564.60%
High School Graduate32,63730.32%
Some College25,53223.72%
Associates Degree9,3978.73%
Bachelors Degree23,49621.83%
Graduate Degree9,8299.13%

Yellowstone County, Montana Educational Attainment by Race

Name Total High School Bachelors
White97,24691,95731,376
Hispanic4,0283,278460
Native American3,6423,160570
Multiple Races1,6571,561453
Asian718627302
Other Race694547127
Black661585194
Islander13113120

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

The highest rate of bachelors degrees is among asian people with a rate of 42.06%.

Name Average Male Female
Overall$37,085$47,273$29,987
Less Than High School$22,832$29,728$16,970
High School Grad$30,954$38,784$21,887
Some College$34,880$44,900$28,760
Bachelors Degree$48,042$59,495$37,151
Graduate Degree$56,130$72,188$52,269

$37,085

Average Earnings

$47,273

Average Male

$29,987

Average Female

Yellowstone County, Montana Language

Yellowstone County, Montana Language by Age

Yellowstone County, Montana Language

96.02% of Yellowstone County, Montana residents speak only English, while 3.98% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 1.83% of the population.

Yellowstone County, Montana Poverty

Yellowstone County, Montana Poverty by Race

Name Total In Poverty Poverty Rate
White133,68912,0619.02%
Native6,5181,47922.69%
Hispanic8,3801,10213.15%
Multiple4,46673116.37%
Black91213514.80%
Other814455.53%
Asian986363.65%

9.91%

Overall Poverty Rate

8.72%

Male Poverty Rate

11.07%

Female Poverty Rate

Poverty in Yellowstone County, Montana

The race most likely to be in poverty in Yellowstone County, Montana is Native, with 22.69% below the poverty level.

The race least likely to be in poverty in Yellowstone County, Montana is Asian, with 3.65% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 2.17%. Among those working part-time, it was 13.59%, and for those that did not work, the poverty rate was 17.84%.

Name Poverty
Less Than High School16.76%
High School12.67%
Some College8.44%
Bachelors or Greater3.77%

Yellowstone County, Montana Income

Yellowstone County, Montana Income by Household Type

Name Median Mean
Households$59,117$79,021
Families$74,693$96,242
Married Families$84,732$108,251
Non Families$34,892$48,005

Yellowstone County, Montana Marital Status

Yellowstone County, Montana Marital Status

Marriage Rates

51.7%

Overall Marriage Rate

52.9%

Male Marriage Rate

50.6%

Female Marriage Rate

Yellowstone County, Montana Married by Age and Sex

Yellowstone County, Montana Marriage

The age group where males are most likely to be married is Over 65, while the female age group most likely to be married is 45-54.

Yellowstone County, Montana Marital Status by Race

Yellowstone County, Montana Veterans

12,008

Number of Veterans

11,115

Male Veterans

893

Female Veterans

War Veterans
Vietnam4,380
First Gulf War2,574
Second Gulf War1,934
Korea980
World War II593
Name Veterans % of Total
White11,14710.02%
Indian44310.15%
Hispanic3476.77%
Black13917.38%
2 or More1215.38%
Asian8810.34%
Other709.47%

$Yellowstone County, Montana Veterans by Education

7.82%

Veteran Poverty Rate

27.58%

Veteran Disability Rate

Yellowstone County, Montana Employment Status

67.4%

Labor Force Participation

64.9%

Employment Rate

3.4%

Unemployment Rate

Yellowstone 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

57.81%

Born in Montana

97.88%

Native Born

2.12%

Foreign Born

0.90%

Non Citizen

Place of Birth

97.88% of Yellowstone County, Montana residents were born in the United States, with 57.81% having been born in Montana. 0.90% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

  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