Unshakable ZIP Data 62002 | Alton, IL Housing Market
Alton · Madison County · St. Louis, MO-IL metro · Illinois · Data updated June 19, 2026
The median sale price in ZIP 62002, Alton, Illinois is $139,958 at $104 per square foot. 111 single-family homes sold in the latest period, down 8.9 percent from a year earlier. Homes sit a median of 43 days on market with 2.8 months of supply. Sellers are getting 98.5 percent of list price and 40.8 percent of homes sold above asking.
Balanced market.
Value anchors
| Metric | Value | Year over year |
|---|---|---|
| Average single-family value | $120,550 | |
| Average price per sq ft | $90 | |
| Median sale price | $139,958 | |
| Median sale price per sq ft | $104 | |
| Median home size | 1,341 sq ft | |
| Median new listing price | $138,714 | +11.0% |
| National size rank | 3,743 |
Sales activity
| Metric | Value | Year over year |
|---|---|---|
| Homes sold | 111 | -8.9% |
| Median days on market | 43 days | |
| Months of supply | 2.8 months | |
| New listings | 140 | -38.5% |
| Active listings | 220 | -22.9% |
| Pending sales | 127 | -8.8% |
Pricing power
| Metric | Value | Year over year |
|---|---|---|
| Average sale-to-list ratio | 98.5% | -0.9 pts |
| Share sold above list | 40.8% | -1.1 pts |
Bedroom value anchors
Average values by bedroom count. Value anchors for orientation, not appraisals.
1-bedroom
$67,961
2-bedroom
$94,042
3-bedroom
$150,333
4-bedroom
$212,523
5-bedroom
$300,545
These figures describe the single-family market for Alton, Illinois ZIP 62002. They are market context, not a substitute for sold comps or a formal appraisal.