Homes for Sale in Alton, IL

89 homes for sale ยท Updated November 9, 2026

Market snapshot for Alton, IL

Median price
$125,000
Average price
$195,790
Highest price
$1,379,500
Avg price / sqft
$108/sqft
Avg home size
1,820 sqft
Avg days on market
44
Avg year built
1942
Avg beds / baths
2.9 bd / 1.9 ba

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