Explore Washington County

Largest landownersWho holds the most land in Washington County, by total acreage.
Largest parcelsThe biggest individual tracts in the county, ranked by size.
Highest-value parcelsThe most valuable properties on the roll, by assessed market value.
Out-of-state ownersWho owns Washington County from somewhere else, and where they live.

Washington County by the Numbers

Median parcel size: 0.17 acres
measured from mapped boundaries
90th-percentile parcel: 1.1 acres
County land area: 463,534 acres
U.S. Census measurement
Communities: 32
11.8% of parcels outside any incorporated place
Median assessed value: $456,960
96% of parcels carry a value
Out-of-state owners: 5.2% of parcels
by owner mailing address

Who Owns Washington County?

Share of the county’s 192,006 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 type	Share of parcels
Individuals	76.6%
Companies & organizations	10.0%
Trusts & estates	12.6%
Government	0.6%
Other / unclassified	0.3%

The largest owner on record is TUALATIN HILLS PARK & RECREATION DISTRICT with 591 parcels — see the full landowner leaderboard.

Parcel Records (~192,006 total)

Showper page

Parcel ID	Owner	Address	City	Acreage	Market Value
R2082944	BLOUIN, PAUL F & BLOUIN, SHELLEY S	—	Tigard	0.18 †	$558,290
R2078848	DEAVER, PHILLIP E & DEAVER, CONSTANCE J	—	Tigard	0.17 †	$561,370
R2078857	STINSON, KEITH & STINSON, JULIE J	—	Tigard	0.18 †	$547,790
R2105862	GAARDE PARK HOA INC	—	Tigard	0.16 †	—
R2105863	GAARDE PARK HOA INC	—	Tigard	0.26 †	—
R2078852	FLORES, JOVENCIO & FLORES, SANDEE	—	Tigard	0.18 †	$516,300
R2082963	QUANDT, LINDA J	—	Tigard	0.04 †	—
R1453117	FIRST CHURCH OF CHRIST SCIENTIST TIGARD OREGON	—	Tigard	0.55 †	$619,990
R2082953	SCHUMOCK, RANDY LIV TRUST	—	Tigard	0.30 †	$573,420
R2078850	ROMELHARDT, ANDREW W & ROMELHARDT, KRISTIN ANNE	—	Tigard	0.17 †	$560,540

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All 192,006 parcels in Washington County as a single file — free, no account needed. Shapefile, GeoJSON, GeoPackage, CSV and Parquet.

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Frequently Asked Questions

How many parcels are in Washington County?

The Washington County assessor roll on file records 192,006 parcels across 32 communities, with 11.8% lying outside any incorporated place.

Who owns the most land in Washington County?

TUALATIN HILLS PARK & RECREATION DISTRICT holds 591 parcels, the most of any owner on record — the largest-landowners leaderboard ranks the top 25.

What is the typical parcel size in Washington County?

Measured from mapped boundaries, the median parcel is 0.17 acres, and nine parcels in ten are under 1.1 acres. Boundary-measured area closely tracks deeded acreage but is not the deed.

How much of Washington County is owned from out of state?

5.2% of parcels list an owner mailing address outside OR, per the county’s own records.

How much of Washington County is government-owned?

Government entities — federal, state, and local — hold 0.6% of the county’s parcels, classified from owner names on the roll.

How current is this data?

It comes from the Washington County assessor roll dated January 2022. 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 (32)

192,006 parcels across 32 communities in Washington County.

Washington County

Parcel & Property Data

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