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County · Illinois

Warren County

16,217Population
-3.7 %Change since 2020
-138Net migration
4.4 %Unemployment rate

Facts

Population
16,217 (2024)
Change since 2020
-3.7 %
Net migration
-138 (2023)
Unemployment rate
4.4 % (2025)
Population base, April 2020
16,842 (2020)
Births
192 (2023)
Births per 1,000 residents, 2023
11.8
Deaths
201 (2023)
Deaths per 1,000 residents, 2023
12.4
Natural change, 2023
-9
International migration
54 (2023)
Domestic migration
-192 (2023)
Net migration per 1,000, 2023
-8.5
Postal code
IL
FIPS code
17187

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

Unemployment rate, annual average

199020254.45.7
PeriodValue
20254.4 %
20244.5 %
20234.3 %
20224.2 %
20215.0 %
20206.4 %
20194.2 %
20184.4 %
20174.4 %
20165.4 %
20155.2 %
20145.8 %

Population estimates, 2020–2024

2020202416.2K16.8K
PeriodValue
202416,217
202316,224
202216,368
202116,595
202016,832