Yellowstone County, Montana Population 2024

171,816

Yellowstone County, Montana's estimated 2024 population is 171,816 with a growth rate of 0.57% in the past year according to the most recent United States census data. Yellowstone County, Montana is the largest county in Montana. The 2010 population was 148,405 and has seen a growth of 15.78% since that time.

Note: data after 2022 is projected based on recent change
Year
Population
Growth
Change
2029176,6819730.55%
2028175,7089730.56%
2027174,7359730.56%
2026173,7629730.56%
2025172,7899730.57%
2024171,8169730.57%
2023170,8439730.57%
2022169,8702,4321.45%
2021167,4382,2201.34%
2020165,2183,8692.4%
2019161,3491,2310.77%
2018160,1186930.43%
2017159,4251,3590.86%
2016158,0661,4080.9%
2015156,6581,2790.82%
2014155,3791,5220.99%
2013153,8572,1671.43%
2012151,6901,8851.26%
2011149,8051,4000.94%
2010148,40500%
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%
192029,6006,65629.01%
191022,94416,732269.35%
19006,2124,147200.82%
18902,065-174,616-98.83%
2024 Growth Rate
0.57% (973)
County Website
Yellowstone County
State
Montana
County Seat
Billings
2020 Population
165,218
Area
2633 mi²
Density
65 people/mi²
Growth Since 2020
3.99% (6,598)
Founded
February 26, 1883

Population by Race

Race
Population
Percentage (of total)
White144,87787.53%
Two or more races8,7955.31%
Native American6,3883.86%
Other race2,5751.56%
Black or African American1,3780.83%
Asian1,2740.77%
Native Hawaiian or Pacific Islander2370.14%

White

Two or more races

Native American

Other race

Black or African American

Asian

Native Hawaiian or Pacific Islander

Yellowstone County, Montana Population by Race

Yellowstone County, Montana Population Pyramid 2024

Yellowstone County, Montana Median Age

38.4

Total

37.7

Male

39.3

Female

Yellowstone County, Montana Adults

There are 127,221 adults, (29,043 of whom are seniors) in Yellowstone County, Montana.

Yellowstone County, Montana Age Dependency

68.6

Age Dependency Ratio

29.6

Old Age Dependency Ratio

39

Child Dependency Ratio

Yellowstone County, Montana Sex Ratio

Female83,44750.41%
Male82,07749.59%

Yellowstone County, Montana Population by Age

Yellowstone County, Montana Renter vs Owner Occupied by Household Type

Household Type
Count
Average Size
Owner
Renter
All67,8972.3969.530.5
Married32,2393.0887.212.8
Non Family26,2251.255347
Female5,7753.145743
Male3,6583.2452.547.5

3.01

Average Family Size

2.39

Average Household Size

69.5%

Rate of Home Ownership

Married

Male

Female

NonFamily

owner

renter

Yellowstone County, Montana Households and Families

Male

Female

Education Attained
Count
Percentage
9th to 12th Grade3,8003.35%
Associates Degree9,9498.77%
Bachelors Degree27,16923.94%
Graduate Degree11,72010.33%
High School Graduate32,43928.58%
Less Than 9th Grade1,5321.35%
Some College26,89823.7%

Less Than 9th Grade

9th to 12th Grade

High School Graduate

Some College

Associates Degree

Bachelors Degree

Graduate Degree

Yellowstone County, Montana Educational Attainment by Sex (over 25)

Yellowstone County, Montana Educational Attainment by Race

High School Graduation Rate

Bachelors Rate

Race
Total
High School
Bachelors
White100,54096,35135,704
Hispanic4,7584,047816
2+ Races3,8993,6571,103
Native American3,6343,346595
Other Race1,7951,526460
Asian892860500
Black594560184
Islander11611610

The highest rate of high school graduation is among islander people with a rate of 100%.

The highest rate of bachelors degrees is among asian people with a rate of 56.05%.

Yellowstone County, Montana Educational Attainment by Race

All

Male

Female

Name
Average
Male
Female
Bachelors Degree$57,008$68,515$47,428
Graduate Degree$72,358$90,358$65,023
High School Graduate$35,951$45,894$30,011
Less Than 9th Grade$27,530$32,153$23,316
Overall$45,556$55,672$37,500
Some College$40,891$54,814$33,176

$45,556

Average Earnings

$55,672

Average Male

$37,500

Average Female

Yellowstone County, Montana Earnings by Educational Attainment

Yellowstone County, Montana Language by Age

Only English

Spanish

Other Indo-European Languages

Asian and Pacific Island Languages

Other Languages

Yellowstone County, Montana Language

96.24% of Yellowstone County, Montana residents speak only English, while 3.76% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 1.44% of the population.

Yellowstone County, Montana Language

Yellowstone County, Montana Poverty by Race

rate

Name
Total
In Poverty
Poverty Rate
White137,34212,7009.25%
Native5,6731,77231.24%
Hispanic10,0111,49714.95%
Multiple8,6391,10812.83%
Asian1,26539831.46%
Other2,4762018.12%
Black1,29717613.57%
Islander23010.43%

10.71%

Overall Poverty Rate

10.21%

Male Poverty Rate

11.21%

Female Poverty Rate

Poverty in Yellowstone County, Montana

The race most likely to be in poverty in Yellowstone County, Montana is Asian, with 31.46% below the poverty level.

The race least likely to be in poverty in Yellowstone County, Montana is Islander, with 0.43% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 2.7%. Among those working part-time, it was 12.91%, and for those that did not work, the poverty rate was 18.31%.

Yellowstone County, Montana Poverty

rate

Rate
Poverty
Less Than 9th Grade19.03%
High School13.83%
Some College8.11%
Bachelors or Greater4.53%

Yellowstone County, Montana Poverty Rate by Education

rate

Rate
Poverty
Male Unemployed28.84%
Female Unemployed20.54%
Female Employed6.68%
Male Employed5.06%

Yellowstone County, Montana Poverty Rate by Employment Status and Sex

Yellowstone County, Montana Income by Household Type

Households

Families

MarriedFamilies

NonFamilies

Name
Median
Mean
Families$92,083$120,745
Households$72,300$98,192
Married Families$107,798$138,790
Non Families$43,067$58,005

mean

median

Income by Household Type

Yellowstone County, Montana Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

50.4%

Overall Marriage Rate

51.2%

Male Marriage Rate

49.5%

Female Marriage Rate

Yellowstone County, Montana Married by Age and Sex

male

female

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 35-44.

Yellowstone County, Montana Marital Status by Race

Married

Widowed

Divorced

Separated

NeverMarried

Yellowstone County, Montana Marital Status

Second Gulf War

First Gulf War

Vietnam

Korea

World War II

12,032

Number of Veterans

10,949

Male Veterans

1,083

Female Veterans

War
Veterans
Vietnam3,990
Second Gulf War2,658
First Gulf War2,578
Korea737
World War II286

Yellowstone County, Montana Veterans by War

count

Age Group
Veterans
35 to 542,959
65 to 742,953
75+2,876
55 to 641,977
18 to 341,267

Yellowstone County, Montana Veterans by Age

count

Name
Veterans
% of Total
White11,1439.8%
2+ Races3977.65%
Hispanic3345.51%
Native American2295.31%
Other Race1959.86%
Black414.75%
Asian272.69%

Yellowstone County, Montana Veterans by Race

Yellowstone County, Montana Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

5.5%

Veteran Poverty Rate

32.6%

Veteran Disability Rate

Yellowstone County, Montana Veterans by Education

LaborForceParticipation

66.2%

Labor Force Participation

63.9%

Employment Rate

3.5%

Unemployment Rate

Yellowstone County, Montana Employment by Age

LaborForceParticipation

Yellowstone County, Montana Employment by Race

LaborForceParticipation

Yellowstone County, Montana Employment by Education

Origin of Non-Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

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

Origin of Naturalized Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

58.5%

Born in Yellowstone County, Montana

98.12%

Native Born

1.88%

Foreign Born

0.85%

Non Citizen

1.02%

Naturalized

Place of Birth

98.12% of Yellowstone County, Montana residents were born in the United States, with 58.5% having been born in Montana. 0.85% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Asia.

Yellowstone County, Montana Place of Birth

Sources