Custer County, Montana Population 2024

11,970

Custer County, Montana's estimated 2024 population is 11,970 with a growth rate of -0.13% in the past year according to the most recent United States census data. Custer County, Montana is the 17th largest county in Montana. The 2010 population was 11,691 and has seen a growth of 2.39% since that time.

Note: data after 2022 is projected based on recent change
Year
Population
Growth
Change
202911,895-15-0.13%
202811,910-15-0.13%
202711,925-15-0.13%
202611,940-15-0.13%
202511,955-15-0.13%
202411,970-15-0.13%
202311,985-15-0.12%
202212,000390.33%
202111,961950.8%
202011,8665054.45%
201911,361-215-1.86%
201811,576-165-1.41%
201711,741-103-0.87%
201611,844-254-2.1%
201512,098750.62%
201412,0231401.18%
201311,883790.67%
201211,804450.38%
201111,759680.58%
201011,69100%
199011,697-1,412-10.77%
198013,1099357.68%
197012,174-1,053-7.96%
196013,2275664.47%
195012,6612,23921.48%
194010,422-820-7.29%
193011,242-952-7.81%
192012,194-1,929-13.66%
191014,1236,23278.98%
19007,8912,58348.66%
18905,3082,798111.47%
18802,5102,4726505.26%
187038-11,857-99.68%
2024 Growth Rate
-0.13% (-15)
County Website
Custer County
State
Montana
County Seat
Miles City
2020 Population
11,866
Area
3783 mi²
Density
3 people/mi²
Growth Since 2020
0.88% (104)
Founded
February 16, 1877

Population by Race

Race
Population
Percentage (of total)
White10,89091.22%
Two or more races7145.98%
Native American1531.28%
Other race790.66%
Asian480.4%
Black or African American420.35%
Native Hawaiian or Pacific Islander120.1%

White

Two or more races

Native American

Other race

Asian

Black or African American

Native Hawaiian or Pacific Islander

Custer County, Montana Population by Race

Custer County, Montana Population Pyramid 2024

Custer County, Montana Median Age

42.6

Total

42.3

Male

43.7

Female

Custer County, Montana Adults

There are 9,557 adults, (2,434 of whom are seniors) in Custer County, Montana.

Custer County, Montana Age Dependency

67.6

Age Dependency Ratio

34.2

Old Age Dependency Ratio

33.4

Child Dependency Ratio

Custer County, Montana Sex Ratio

Female5,90449.46%
Male6,03450.54%

Custer County, Montana Population by Age

Custer County, Montana Renter vs Owner Occupied by Household Type

Household Type
Count
Average Size
Owner
Renter
All5,0442.2868.531.5
Married2,4912.983.616.4
Non Family2,0401.2350.949.1
Female3493.2260.739.3
Male1643.837525

2.87

Average Family Size

2.28

Average Household Size

68.5%

Rate of Home Ownership

Married

Male

Female

NonFamily

owner

renter

Custer County, Montana Households and Families

Male

Female

Education Attained
Count
Percentage
9th to 12th Grade2843.3%
Associates Degree1,02611.93%
Bachelors Degree1,90022.09%
Graduate Degree6637.71%
High School Graduate2,57229.9%
Less Than 9th Grade1711.99%
Some College1,98623.09%

Less Than 9th Grade

9th to 12th Grade

High School Graduate

Some College

Associates Degree

Bachelors Degree

Graduate Degree

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

Custer County, Montana Educational Attainment by Race

High School Graduation Rate

Bachelors Rate

Race
Total
High School
Bachelors
White7,8677,4892,372
2+ Races513468170
Hispanic22319877
Native American51490
Asian34225
Other Race30308
Islander1200

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

The highest rate of bachelors degrees is among hispanic people with a rate of 34.53%.

Custer County, Montana Educational Attainment by Race

All

Male

Female

Name
Average
Male
Female
Bachelors Degree$50,159$48,380$50,557
Graduate Degree$70,859$72,917$69,063
High School Graduate$28,856$33,125$18,318
Less Than 9th Grade$24,602$29,167$16,528
Overall$41,553$44,282$39,478
Some College$42,310$47,770$40,238

$41,553

Average Earnings

$44,282

Average Male

$39,478

Average Female

Custer County, Montana Earnings by Educational Attainment

Custer County, Montana Language by Age

Only English

Spanish

Other Indo-European Languages

Asian and Pacific Island Languages

Other Languages

Custer County, Montana Language

96.85% of Custer County, Montana residents speak only English, while 3.15% speak other languages. The non-English language spoken by the largest group is Other Indo-European, which is spoken by 1.01% of the population.

Custer County, Montana Language

Custer County, Montana Poverty by Race

rate

Name
Total
In Poverty
Poverty Rate
White10,3231,18211.45%
Multiple6997610.87%
Hispanic3785614.81%
Native1113733.33%

11.67%

Overall Poverty Rate

13.05%

Male Poverty Rate

10.28%

Female Poverty Rate

Poverty in Custer County, Montana

The race most likely to be in poverty in Custer County, Montana is Native, with 33.33% below the poverty level.

The race least likely to be in poverty in Custer County, Montana is Multiple, with 10.87% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 4.55%. Among those working part-time, it was 15%, and for those that did not work, the poverty rate was 24.35%.

Custer County, Montana Poverty

rate

Rate
Poverty
Less Than 9th Grade22.4%
High School20.91%
Some College10.62%
Bachelors or Greater6.21%

Custer County, Montana Poverty Rate by Education

rate

Rate
Poverty
Male Unemployed53.44%
Female Unemployed16.28%
Male Employed8.27%
Female Employed7.4%

Custer County, Montana Poverty Rate by Employment Status and Sex

Custer County, Montana Income by Household Type

Households

Families

MarriedFamilies

NonFamilies

Name
Median
Mean
Families$90,000$105,272
Households$63,585$83,970
Married Families$95,075$-999,999,999
Non Families$33,883$48,054

mean

median

Income by Household Type

Custer County, Montana Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

52.1%

Overall Marriage Rate

50.2%

Male Marriage Rate

54.0%

Female Marriage Rate

Custer County, Montana Married by Age and Sex

male

female

Custer County, Montana Marriage

The age group where males are most likely to be married is 55-64, while the female age group most likely to be married is 45-54.

Custer County, Montana Marital Status by Race

Married

Widowed

Divorced

Separated

NeverMarried

Custer County, Montana Marital Status

Second Gulf War

First Gulf War

Vietnam

Korea

World War II

874

Number of Veterans

826

Male Veterans

48

Female Veterans

War
Veterans
Vietnam324
First Gulf War283
Second Gulf War193
Korea42
World War II2

Custer County, Montana Veterans by War

count

Age Group
Veterans
35 to 54261
75+213
65 to 74177
55 to 64161
18 to 3462

Custer County, Montana Veterans by Age

count

Name
Veterans
% of Total
White8049.16%
2+ Races6210.63%
Hispanic4014.98%
Other Race611.32%
Native American22.27%

Custer County, Montana Veterans by Race

Custer County, Montana Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

5.1%

Veteran Poverty Rate

44.11%

Veteran Disability Rate

Custer County, Montana Veterans by Education

LaborForceParticipation

65.4%

Labor Force Participation

63.6%

Employment Rate

2.7%

Unemployment Rate

Custer County, Montana Employment by Age

LaborForceParticipation

Custer County, Montana Employment by Race

LaborForceParticipation

Custer 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

63.81%

Born in Custer County, Montana

98.43%

Native Born

1.57%

Foreign Born

0.63%

Non Citizen

0.95%

Naturalized

Place of Birth

98.43% of Custer County, Montana residents were born in the United States, with 63.81% having been born in Montana. 0.63% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Asia.

Custer County, Montana Place of Birth

Sources