Demographics & People — Clay County, Illinois

Population & Households

Population (official)13,248
Median Age41.80
Veterans804
Housing Units6,171
Uninsured119

Migration

Inflow12,153
Outflow12,101
Net52
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 2026-04-13T15:43:27.582824+00:00; aggregated 2026-04-13T16:08:22.866905+00:00.