Unshakable ZIP Data 57223 | Castlewood, SD Housing Market
Castlewood · Hamlin County · Watertown, SD metro · South Dakota · Data updated June 19, 2026
The median sale price in ZIP 57223, Castlewood, South Dakota is $200,890 at $129 per square foot. 2 single-family homes sold in the latest period, up 3.0 percent from a year earlier. Homes sit a median of 162 days on market with 3.2 months of supply. Sellers are getting 102.7 percent of list price and 50.0 percent of homes sold above asking.
Buyer leverage market. Negotiate hard.
Value anchors
| Metric | Value | Year over year |
|---|---|---|
| Average single-family value | $346,035 | |
| Average price per sq ft | $223 | |
| Median sale price | $200,890 | |
| Median sale price per sq ft | $129 | |
| Median home size | 1,554 sq ft | |
| Median new listing price | $351,991 | -22.6% |
| National size rank | 19,814 |
Sales activity
| Metric | Value | Year over year |
|---|---|---|
| Homes sold | 2 | +3.0% |
| Median days on market | 162 days | |
| Months of supply | 3.2 months | |
| New listings | 4 | +35.4% |
| Active listings | 7 | +77.3% |
| Pending sales | 3 | +52.0% |
Pricing power
| Metric | Value | Year over year |
|---|---|---|
| Average sale-to-list ratio | 102.7% | +11.4 pts |
| Share sold above list | 50.0% | +50.0 pts |
These figures describe the single-family market for Castlewood, South Dakota ZIP 57223. They are market context, not a substitute for sold comps or a formal appraisal.