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County · Missouri

Jefferson County

231,888Population
2.3 %Change since 2020
2,057Net migration
3.7 %Unemployment rate

Facts

Population
231,888 (2024)
Change since 2020
2.3 %
Net migration
2,057 (2023)
Unemployment rate
3.7 % (2025)
Population base, April 2020
226,569 (2020)
Births
2,254 (2023)
Births per 1,000 residents, 2023
9.7
Deaths
2,411 (2023)
Deaths per 1,000 residents, 2023
10.4
Natural change, 2023
-157
International migration
93 (2023)
Domestic migration
1,964 (2023)
Net migration per 1,000, 2023
8.9
Postal code
MO
FIPS code
29099

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

Unemployment rate, annual average

199020253.77.8
PeriodValue
20253.7 %
20243.4 %
20232.8 %
20222.5 %
20213.8 %
20206.1 %
20193.0 %
20183.1 %
20173.6 %
20164.3 %
20155.0 %
20146.3 %

Population estimates, 2020–2024

20202024231.9K226.9K
PeriodValue
2024231,888
2023231,155
2022229,268
2021228,030
2020226,947