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County · Illinois

Jefferson County

36,107Population
-2.7 %Change since 2020
22Net migration
4.9 %Unemployment rate

Facts

Population
36,107 (2024)
Change since 2020
-2.7 %
Net migration
22 (2023)
Unemployment rate
4.9 % (2025)
Population base, April 2020
37,113 (2020)
Births
388 (2023)
Births per 1,000 residents, 2023
10.7
Deaths
486 (2023)
Deaths per 1,000 residents, 2023
13.5
Natural change, 2023
-98
International migration
28 (2023)
Domestic migration
-6 (2023)
Net migration per 1,000, 2023
0.6
Postal code
IL
FIPS code
17081

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

Unemployment rate, annual average

199020254.910.4
PeriodValue
20254.9 %
20244.7 %
20234.8 %
20224.8 %
20216.4 %
202010.0 %
20194.5 %
20185.4 %
20175.5 %
20166.4 %
20156.7 %
20147.4 %

Population estimates, 2020–2024

2020202436.1K37K
PeriodValue
202436,107
202336,331
202236,415
202136,899
202037,000