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County · Idaho

Ada County

535,799Population
8.2 %Change since 2020
4,764Net migration
3.3 %Unemployment rate

Facts

Population
535,799 (2024)
Change since 2020
8.2 %
Net migration
4,764 (2023)
Unemployment rate
3.3 % (2025)
State
Idaho
Population base, April 2020
494,969 (2020)
Births
4,978 (2023)
Births per 1,000 residents, 2023
9.3
Deaths
3,819 (2023)
Deaths per 1,000 residents, 2023
7.1
Natural change, 2023
1,159
International migration
1,917 (2023)
Domestic migration
2,847 (2023)
Net migration per 1,000, 2023
8.9
Postal code
ID
FIPS code
16001

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

Unemployment rate, annual average

199020253.33.7
PeriodValue
20253.3 %
20243.2 %
20232.8 %
20222.4 %
20213.2 %
20205.5 %
20192.5 %
20182.5 %
20172.8 %
20163.2 %
20153.4 %
20143.8 %

Population estimates, 2020–2024

20202024535.8K498.3K
PeriodValue
2024535,799
2023526,690
2022520,788
2021513,098
2020498,301