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County · Pennsylvania

Delaware County

584,882Population
1.4 %Change since 2020
2,538Net migration
4.2 %Unemployment rate

Facts

Population
584,882 (2024)
Change since 2020
1.4 %
Net migration
2,538 (2023)
Unemployment rate
4.2 % (2025)
Population base, April 2020
576,970 (2020)
Births
6,443 (2023)
Births per 1,000 residents, 2023
11.0
Deaths
5,427 (2023)
Deaths per 1,000 residents, 2023
9.3
Natural change, 2023
1,016
International migration
4,406 (2023)
Domestic migration
-1,868 (2023)
Net migration per 1,000, 2023
4.3
Postal code
PA
FIPS code
42045

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

Unemployment rate, annual average

199020254.24.0
PeriodValue
20254.2 %
20243.7 %
20233.4 %
20224.0 %
20216.0 %
20209.3 %
20194.1 %
20184.3 %
20174.8 %
20165.1 %
20155.0 %
20145.6 %

Population estimates, 2020–2024

20202024584.9K576.5K
PeriodValue
2024584,882
2023580,538
2022577,040
2021577,126
2020576,523