Union County, IL home prices

Union County, IL: the typical home is worth $153,922 as of 2026-05, up +3.9% over the past year and n/a since 2000. Listings run about $111/sq ft. Rent…

Data as of May 2026 · by the Real Estate Price Map data team · methodology & sources

1998: $117,868 → 2026: $153,922 (1.3×) pre-2000 estimated via FHFA index

Market read

At $153,922, homes in Union County sit 3% below the Illinois median ($158,388) and 34% below the US median ($233,954). That ranks #55 of 102 Illinois counties by price.

Prices are holding steady (+3.9% in the last year) — a balanced market.

Homes here take a while to sell — a median 79 days on the market, with 5% of listings cutting their asking price.

At 2.4× local income, that's more affordable than the typical US county (~3.8×).

Against the typical US price-to-income and price-to-rent, homes here look ~37% cheap for local incomes and rents — a relative bargain.

Home value history

Zillow ZHVI, monthly from 2000 · recessions shaded. See the full 1975 history on the interactive map →

Nearby counties

Pulaski County, IL ($91,227) · Johnson County, IL ($204,501) · Alexander County, IL ($56,199) · Jackson County, IL ($132,845) · Williamson County, IL ($158,465) · Cape Girardeau County, MO ($247,661)