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)
White145,20486.77%
Two or more races9,7815.84%
Native American6,6944%
Other race2,7391.64%
Black or African American1,4660.88%
Asian1,3800.82%
Native Hawaiian or Pacific Islander760.05%

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

38.7

Total

38.1

Male

39.4

Female

Yellowstone County, Montana Adults

There are 128,498 adults, (29,849 of whom are seniors) in Yellowstone County, Montana.

Yellowstone County, Montana Age Dependency

69.6

Age Dependency Ratio

30.3

Old Age Dependency Ratio

39.4

Child Dependency Ratio

Yellowstone County, Montana Sex Ratio

Female84,46750.48%
Male82,87349.52%

Yellowstone County, Montana Population by Age

Yellowstone County, Montana Renter vs Owner Occupied by Household Type

Household Type
Count
Average Size
Owner
Renter
All69,2722.3769.330.7
Married32,8563.0586.813.2
Non Family26,4021.2451.948.1
Female5,9833.055941
Male4,0313.15644

2.96

Average Family Size

2.37

Average Household Size

69.3%

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 Grade3,8003.3%
Associates Degree10,3248.96%
Bachelors Degree26,80623.25%
Graduate Degree12,30110.67%
High School Graduate34,17229.64%
Less Than 9th Grade1,6551.44%
Some College26,22622.75%

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
White101,52997,46735,805
Hispanic4,9654,187755
2+ Races4,5794,2441,381
Native American3,6533,319623
Other Race1,8791,574402
Asian992867459
Black658651205
Islander39390

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 46.27%.

Yellowstone County, Montana Educational Attainment by Race

All

Male

Female

Name
Average
Male
Female
Bachelors Degree$58,639$72,706$49,580
Graduate Degree$76,793$92,893$68,678
High School Graduate$37,441$48,738$31,699
Less Than 9th Grade$29,504$33,693$23,899
Overall$47,924$58,138$39,361
Some College$43,865$56,215$35,138

$47,924

Average Earnings

$58,138

Average Male

$39,361

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

96.47% of Yellowstone County, Montana residents speak only English, while 3.53% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 1.33% of the population.

Yellowstone County, Montana Language

Yellowstone County, Montana Poverty by Race

rate

Name
Total
In Poverty
Poverty Rate
White138,11812,0968.76%
Hispanic10,4491,75616.81%
Native5,8211,71329.43%
Multiple9,4921,04711.03%
Asian1,37537927.56%
Other2,64833212.54%
Black1,3871289.23%
Islander7022.86%

10.23%

Overall Poverty Rate

9.82%

Male Poverty Rate

10.63%

Female Poverty Rate

Poverty in Yellowstone County, Montana

The race most likely to be in poverty in Yellowstone County, Montana is Native, with 29.43% below the poverty level.

The race least likely to be in poverty in Yellowstone County, Montana is Islander, with 2.86% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 2.58%. Among those working part-time, it was 13.22%, and for those that did not work, the poverty rate was 17.14%.

Yellowstone County, Montana Poverty

rate

Rate
Poverty
Less Than 9th Grade17.32%
High School12.39%
Some College8.3%
Bachelors or Greater4.69%

Yellowstone County, Montana Poverty Rate by Education

rate

Rate
Poverty
Male Unemployed28.68%
Female Unemployed17.13%
Female Employed6.57%
Male Employed5.14%

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$94,167$123,455
Households$74,400$102,308
Married Families$109,602$142,312
Non Families$45,452$63,281

mean

median

Income by Household Type

Yellowstone County, Montana Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

50.5%

Overall Marriage Rate

50.7%

Male Marriage Rate

50.2%

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

12,075

Number of Veterans

11,015

Male Veterans

1,060

Female Veterans

War
Veterans
Vietnam3,950
Second Gulf War2,817
First Gulf War2,709
Korea673
World War II245

Yellowstone County, Montana Veterans by War

count

Age Group
Veterans
35 to 543,246
65 to 742,915
75+2,893
55 to 641,982
18 to 341,039

Yellowstone County, Montana Veterans by Age

count

Name
Veterans
% of Total
White11,1799.8%
2+ Races4237.34%
Hispanic3585.77%
Other Race24111.36%
Native American1323%
Asian585.39%
Black424.61%

Yellowstone County, Montana Veterans by Race

Yellowstone County, Montana Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

5.17%

Veteran Poverty Rate

33.77%

Veteran Disability Rate

Yellowstone County, Montana Veterans by Education

LaborForceParticipation

66.1%

Labor Force Participation

63.8%

Employment Rate

3.4%

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

58.75%

Born in Yellowstone County, Montana

98.16%

Native Born

1.84%

Foreign Born

0.9%

Non Citizen

0.93%

Naturalized

Place of Birth

98.16% of Yellowstone County, Montana residents were born in the United States, with 58.75% having been born in Montana. 0.9% 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