Johnson County, IL home prices

Johnson County, IL: the typical home is worth $204,501 as of 2026-05, down -3.0% over the past year and n/a since 2000. Listings run about $139/sq ft…

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

1996: $122,228 → 2026: $204,501 (1.7×) pre-2000 estimated via FHFA index

Market read

At $204,501, homes in Johnson County sit 29% above the Illinois median ($158,388) and 13% below the US median ($233,954). That ranks #23 of 102 Illinois counties by price.

Prices are cooling (-3.0% in the last year) — leaning buyer's market.

Homes here take a while to sell — a median 71 days on the market, with 30% of listings cutting their asking price.

At 3.2× 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 ~14% 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

Williamson County, IL ($158,465) · Pope County, IL ($171,737) · Massac County, IL ($125,160) · Union County, IL ($153,922) · Pulaski County, IL ($91,227) · Saline County, IL ($87,790)