King County, WA Housing Market Brief
county · WA · as of May 2026
What is King County, WA’s Alpha Score?
The Alpha Score is a composite 0–100 index of market strength, a weighted blend of five dimensions. See the methodology.
Where is King County, WA in its market cycle?
King County, WA is classified as Mature — holding near a healthy peak. This is a classification of recent (1–12 month) momentum, not a price forecast.
King County, WA housing market data
| Metric | Value | YoY |
|---|---|---|
| Median Sale Price | $894K | ▲ +2.2% |
| Median Days on Market | 12 days | ▲ +50% |
| Months of Supply | 2.8 | ▲ +12% |
| Homes for Sale | 5,982 | ▲ +3.3% |
| Homes Sold | 2,134 | ▼ -8.3% |
| Median Price / Sq Ft | $520 | ▼ -1.9% |
| Sale-to-List Ratio | 100.0% | ▼ -0.7% |
How has King County, WA’s Alpha Score moved?
Markets like King County, WA
- Napa County, CA, CAcounty35
- Multnomah County, OR, ORcounty36
- San Benito County, CA, CAcounty34
- Polk County, OR, ORcounty34
- Snohomish County, WA, WAcounty32
- Santa Cruz County, CA, CAcounty36
- Clackamas County, OR, ORcounty36
- Douglas County, OR, ORcounty35
- Barnstable County, MA, MAcounty33
- Douglas County, WA, WAcounty36
Frequently asked questions
Is King County, WA a buyer's or seller's market?
As of May 2026, King County, WA is classified as a Buyer's Market, based on its Alpha Score of 35 out of 100. The classification reflects current price, inventory, affordability, economic, and rental-yield conditions.
Are home prices rising or falling in King County, WA?
The median sale price in King County, WA is $894K, having risen 2.2% over the past year.
How affordable is King County, WA?
King County, WA scores 2 out of 100 on affordability — relatively unaffordable relative to local incomes and prevailing mortgage rates compared with other counties.
What's driving King County, WA's Alpha Score?
King County, WA's strongest dimension is Economic Strength (49/100) and its weakest is Affordability (2/100). The Alpha Score is a weighted blend of all five dimensions.
Want the live, interactive view of King County, WA? Open the full market dashboard — charts, ZIP-level drill-down, and watchlist tracking. Explore the map or read the methodology.