King County, Washington

633,810 parcels with boundaries, owners, assessed values and land use, sourced March 2026.

$199once

All 633,810 parcels, every field this county publishes, in 5 formats — GeoParquet, GeoPackage, Shapefile, GeoJSON, CSV. Delivered by email in minutes.

Parcel boundaries over aerial imagery of King County, Washington
King County, Washington · Imagery: USDA NAIP (public domain)
Parcels
633,810
County area
2,301 sq mi
Buildings matched
750,964
Source
March 2026

What is in the file

Every field King County publishes

Counties publish different things, so we measure what share of this county's parcels actually carry each field rather than promising all of them.

We have not measured per-field fill rates for King County in the June 2026 release. The file ships with the same schema as every other county — what is missing is the measurement, not the columns. See the full field list.

More than one county

Licence all of Washington

Every county we hold in the state, in one schema, refreshes included.

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