Addresses on 21st St, Alton, Madison County, IL
- Property Count: 2
- Median Living Area: 1,168 square feet
- Median Lot Size: 0.78 acres
- Median Year Built: 1958
- Median Estimate: $75,237
- Median Price Per Square Foot: $64
Browse properties by addresses on 21st St, Alton, Madison County, IL on TopHap.