LandBrief

King County

Parcel & Property Data

614,458Total Parcels
—Avg. Market Value
1,284,547Total Acres (measured from parcel boundaries)

About This Data

LandBrief holds 614,458 parcel records for King County, sourced from county records. Each includes the parcel boundary, and — where the county publishes them — owner, situs address, acreage, assessed values and legal description.

Data from the King County assessor roll dated February 2023, loaded August 2026. See data sources for every county’s vintage.

Explore King County

King County by the Numbers

Median parcel size
0.19 acres
measured from mapped boundaries
90th-percentile parcel
1 acres
County land area
1,354,045 acres
U.S. Census measurement
Communities
70
2.0% of parcels outside any incorporated place

Who Owns King County?

Share of the county’s 614,458 parcels by the kind of owner on record. Classified from owner names, so the boundaries are approximate; an entity the rules cannot place counts as an individual.

Owner typeShare of parcels
Individuals90.3%
Companies & organizations7.2%
Trusts & estates1.3%
Government1.0%
Other / unclassified0.2%

The largest owner on record is SEATTLE CITY OF DPR with 1,661 parcels — see the full landowner leaderboard.

Parcel Records (~614,458 total)

per page
Parcel IDOwnerAddressCityAcreage
1421059017BEJARNO MICHAEL G+ELIZABETH33003 EAST LAKE HOLM DR SEAuburn31.80 †
3410600485MARCHUK ALEKSANDR+NADEZHDA33010 EAST LAKE HOLM DR SEAuburn0.78 †
3410600480MIKESELL SCOTT W+TAMELA L33014 EAST LAKE HOLM DR SEAuburn0.78 †
3410600465RUIZ ANTONIO+GONZALEZ-CELIS33018 EAST LAKE HOLM DR SEAuburn1.49 †
3410600255DENNENY JAMES A JR+NANCY K33025 EAST LAKE HOLM DR SEAuburn0.56 †
3410600460SCHMELEBECK RODNEY D+NORA A33026 EAST LAKE HOLM DR SEAuburn0.68 †
3410600455DOSCH DOUGLAS G33028 EAST LAKE HOLM DR SEAuburn1.44 †
3410600245BLACK DONALD C+BARBARA A (T33031 EAST LAKE HOLM DR SEAuburn0.81 †
3410600235ROBINSON HARRIETT E33039 EAST LAKE HOLM DR SEAuburn0.98 †
3410600440PEARSON DAWN33040 EAST LAKE HOLM DR SEAuburn1.35 †
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Download King County parcel data

All 614,458 parcels in King County as a single file — free, no account needed. Shapefile, GeoJSON, GeoPackage, CSV and Parquet.

Get King County on FreeParcelData →

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Frequently Asked Questions

How many parcels are in King County?

The King County assessor roll on file records 614,458 parcels across 70 communities, with 2.0% lying outside any incorporated place.

Who owns the most land in King County?

SEATTLE CITY OF DPR holds 1,661 parcels, the most of any owner on record — the largest-landowners leaderboard ranks the top 25.

What is the typical parcel size in King County?

Measured from mapped boundaries, the median parcel is 0.19 acres, and nine parcels in ten are under 1 acres. Boundary-measured area closely tracks deeded acreage but is not the deed.

How much of King County is government-owned?

Government entities — federal, state, and local — hold 1.0% of the county’s parcels, classified from owner names on the roll.

How current is this data?

It comes from the King County assessor roll dated February 2023. Counties deliver on their own schedules; the methodology page explains how records are processed and the data sources page tracks every county’s vintage.

Browse by City (70)

614,458 parcels across 70 communities in King County.