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County · Iowa

Polk County

516,185Population
4.8 %Change since 2020
4,072Net migration
3.7 %Unemployment rate

Facts

Population
516,185 (2024)
Change since 2020
4.8 %
Net migration
4,072 (2023)
Unemployment rate
3.7 % (2025)
State
Iowa
Population base, April 2020
492,402 (2020)
Births
6,463 (2023)
Births per 1,000 residents, 2023
12.5
Deaths
4,196 (2023)
Deaths per 1,000 residents, 2023
8.1
Natural change, 2023
2,267
International migration
4,143 (2023)
Domestic migration
-71 (2023)
Net migration per 1,000, 2023
7.9
Postal code
IA
FIPS code
19153

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

Unemployment rate, annual average

199020253.73.3
PeriodValue
20253.7 %
20243.2 %
20232.9 %
20222.8 %
20214.1 %
20205.9 %
20192.7 %
20182.6 %
20173.0 %
20163.4 %
20153.7 %
20144.2 %

Population estimates, 2020–2024

20202024516.2K493K
PeriodValue
2024516,185
2023507,487
2022501,261
2021497,903
2020493,039