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