King County parcel data is available in AcreBound, with 635,264 mapped parcel records.
Share of King County parcel records that carry each data type.
King County has 635,264 mapped parcels in the AcreBound Washington dataset, the largest county dataset in the state.
Parcels here are predominantly small: 90.2% of parcels with recorded acreage are under one acre. The median mapped parcel size is approximately 0.19 acres. Residential parcels make up 97.5% of records with a classified land-use code, followed by commercial at 1.7%.
Across King County records, AcreBound holds parcel boundaries on 100%, APN or parcel ID on 100%, property addresses on 83.9% and owner information on 97.2%. These records were last refreshed in May 2026.
| Data type | Availability | Records |
|---|---|---|
| Parcel Boundaries | Excellent | 100% |
| APN / Parcel ID | Excellent | 100% |
| Property Address | Good | 83.9% |
| Owner Information | Excellent | 97.2% |
| Mailing Address | Unavailable | n/a |
| Acreage | Excellent | 91.9% |
| Land Use | Excellent | 90.1% |
| Building Information | Good | 82.5% |
Availability describes how complete each data type is. The records themselves are viewed in the AcreBound app.
AcreBound refreshes King County parcel records on a rolling basis. Verify anything important against official county records.
Aggregated from King County parcel records that carry acreage and land-use values.
Share of parcels with recorded acreage.
Share of parcels with a classified land-use code.
Parcel details, boundaries and ownership information are available in the app.
Find a parcel from a street address.
Look up a parcel using its APN or parcel number.
Find parcels by owner name where ownership data is available.
Tap anywhere on the map to open the parcel beneath it.
Use your current location to see the parcel you are standing on.
View parcel boundaries, property details, ownership information and land data with AcreBound.
