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St. Mary's, IL homes for sale & real estate
1 home
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Recommended
1155 20th St, Decatur, IL 62521
1155 20th St, Decatur, IL 62521
1155 20th St, Decatur, IL 62521
$69,900
3 beds
2 baths
1,157
sq ft
1155 20th St, Decatur, IL 62521
3,920 sq ft lot
•
Car-dependent
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Redfin
Illinois
Decatur
St. Mary's
Average home prices near St. Mary's, IL
Cities
Macon
homes for sale
$97,450
Findlay
homes for sale
$290,900
Taylorville
homes for sale
$164,900
Cerro Gordo
homes for sale
$155,000
Assumption
homes for sale
$72,500
Mount Zion
homes for sale
$337,450
Long Creek
homes for sale
$184,000
Forsyth
homes for sale
$373,500
Moweaqua
homes for sale
$227,400
Sullivan
homes for sale
$129,900
Argenta
homes for sale
$138,000
Illiopolis
homes for sale
$189,900
Decatur
homes for sale
$139,700
Show more
Neighborhoods
Nua
homes for sale
$40,400
Sia
homes for sale
$62,500
Muffley
homes for sale
$134,500
Greenlake
homes for sale
$159,900
Decatur Historic District
homes for sale
$108,000
South Shores
homes for sale
$105,449
Lincoln Park
homes for sale
$205,000
Bayshore
homes for sale
$203,950
Bayview
homes for sale
$164,950
Show more
St. Mary's, IL real estate trends
All Home Types trends in St. Mary's, IL
Median Sale Price
# of Homes Sold
Median Days on Market
All Home Types
All Home Types
Single Family Homes
Townhouses
Condos/Co-ops
Median Sale Price
(All Home Types)
$51,000
+30.8%
YoY | Jul 2025
1 year
3 year
5 year
Based on Redfin calculations of home data from MLS and/or public records.
Location
Data
Jul 2025
Growth
% YoY
St. Mary's, IL
$51,000
+30.8%
See more St. Mary's, IL market insights
More to explore in St. Mary's, IL
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Popular Markets in Illinois
Chicago
homes for sale
$355,000
Naperville
homes for sale
$610,000
Schaumburg
homes for sale
$336,500
Arlington Heights
homes for sale
$450,000
Glenview
homes for sale
$825,000
Oak Park
homes for sale
$429,000
Des Plaines
homes for sale
$395,000
Evanston
homes for sale
$461,950
Orland Park
homes for sale
$399,000
Downers Grove
homes for sale
$490,000
Mount Prospect
homes for sale
$399,000
St. Charles
homes for sale
$454,995
Skokie
homes for sale
$499,000
Northbrook
homes for sale
$600,000
Glen Ellyn
homes for sale
$744,450
Show more
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