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County · Montana

Custer County

11,964Population
0.8 %Change since 2020
28Net migration
2.8 %Unemployment rate

Facts

Population
11,964 (2024)
Change since 2020
0.8 %
Net migration
28 (2023)
Unemployment rate
2.8 % (2025)
State
Montana
Population base, April 2020
11,866 (2020)
Births
133 (2023)
Births per 1,000 residents, 2023
11.1
Deaths
152 (2023)
Deaths per 1,000 residents, 2023
12.7
Natural change, 2023
-19
International migration
2 (2023)
Domestic migration
26 (2023)
Net migration per 1,000, 2023
2.3
Postal code
MT
FIPS code
30017

Sources: US Census Bureau — Population Estimates, Bureau of Labor Statistics — LAUS

Unemployment rate, annual average

199020252.85.0
PeriodValue
20252.8 %
20242.6 %
20232.5 %
20222.4 %
20213.0 %
20204.7 %
20192.8 %
20183.0 %
20173.1 %
20163.5 %
20153.4 %
20143.2 %

Population estimates, 2020–2024

2020202412K11.9K
PeriodValue
202411,964
202312,013
202212,005
202111,961
202011,863