Index change and building permits for the year, with every county.
In 2022 the FHFA house price index for Illinois changed +12.1%, against +15.5% for the United States and +7.8% in 2021.
20,549 housing units were authorised by building permits in the state that year (9,765 single-family), +4.5% on 2021; the national total was 1,680,368.
+12.1%Illinois index, 2021–2022US +15.5%
20,549housing units permitted in 20229,765 single-family
93 of 96counties with a rising indexmedian county +11.3%
Ranked by the county index change from 2021 to 2022 (FHFA annual county index). Permits are units authorised in 2022; per 1,000 uses the vintage 2025 population.
Housing units authorised in Illinois by yearsingle-family2+ unit buildings
Source: Federal Housing Finance Agency annual state and county house price indexes (updated March 31, 2026); Census Bureau Building Permits Survey annual state and county files. Public domain. Methodology.