Demographics & People — Union County, Illinois

Population & Households

Population (official)17,122
Median Age44.70
Veterans981
Housing Units7,869
Uninsured285

Migration

Inflow14,413
Outflow14,250
Net163
GrowingYes
Year2022-2023

Source: Census ACS 5-Year 2022. Official numbers: Census ACS 5-Year 2022 — county-level query.

Data provenance: aggregated from town-level sources, county.json. Rebuilt 2026-04-13T15:43:27.763557+00:00; aggregated 2026-04-13T16:08:23.021165+00:00.