Saint Clair County, IL home prices

Saint Clair County, IL: the typical home is worth $180,517 as of 2026-05, up +2.8% over the past year and n/a since 2000. Listings run about $123/sq ft…

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

1977: $58,645 → 2026: $180,517 (3.1×) pre-2000 estimated via FHFA index

Market read

At $180,517, homes in Saint Clair County sit 14% above the Illinois median ($158,388) and 23% below the US median ($233,954). That ranks #35 of 102 Illinois counties by price.

Prices are holding steady (+2.8% in the last year) — a balanced market.

Homes here move at a steady pace — a median 49 days on the market, with 14% of listings cutting their asking price.

At 2.7× 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 ~32% cheap for local incomes and rents — a relative bargain.

Buying looks cheaper than renting — ~$891/mo to buy (P&I, 20% down) vs $1,352/mo to rent.

Home value history

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

Nearby counties

Monroe County, IL ($327,942) · Saint Louis City, MO ($183,723) · Madison County, IL ($199,040) · Clinton County, IL ($221,065) · Washington County, IL ($164,461) · Randolph County, IL ($154,117)