Unshakable ZIP Data 99350 | Prosser, WA Housing Market
Prosser · Benton County · Kennewick-Richland, WA metro · Washington · Data updated June 19, 2026
The median sale price in ZIP 99350, Prosser, Washington is $422,864 at $257 per square foot. 42 single-family homes sold in the latest period, up 31.9 percent from a year earlier. Homes sit a median of 132 days on market with 4.9 months of supply. Sellers are getting 96.8 percent of list price and 17.1 percent of homes sold above asking.
Buyer leverage market. Negotiate hard.
Value anchors
| Metric | Value | Year over year |
|---|---|---|
| Average single-family value | $421,931 | |
| Average price per sq ft | $256 | |
| Median sale price | $422,864 | |
| Median sale price per sq ft | $257 | |
| Median home size | 1,646 sq ft | |
| Median new listing price | $426,256 | -5.3% |
| National size rank | 7,718 |
Sales activity
| Metric | Value | Year over year |
|---|---|---|
| Homes sold | 42 | +31.9% |
| Median days on market | 132 days | |
| Months of supply | 4.9 months | |
| New listings | 58 | -20.7% |
| Active listings | 108 | -14.0% |
| Pending sales | 44 | +1.4% |
Pricing power
| Metric | Value | Year over year |
|---|---|---|
| Average sale-to-list ratio | 96.8% | -1.0 pts |
| Share sold above list | 17.1% | -1.7 pts |
Bedroom value anchors
Average values by bedroom count. Value anchors for orientation, not appraisals.
2-bedroom
$310,673
3-bedroom
$395,126
4-bedroom
$529,036
These figures describe the single-family market for Prosser, Washington ZIP 99350. They are market context, not a substitute for sold comps or a formal appraisal.