Walla Walla County
Parcel & Property Data
About This Data
LandBrief holds 29,561 parcel records for Walla Walla 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 Walla Walla County assessor roll dated November 2017, loaded August 2026. See data sources for every county’s vintage.
Explore Walla Walla County
Walla Walla County by the Numbers
- Median parcel size
- 0.34 acres
measured from mapped boundaries - 90th-percentile parcel
- 57.2 acres
- County land area
- 812,821 acres
U.S. Census measurement - Communities
- 11
30.5% of parcels outside any incorporated place - Out-of-state owners
- 8.4% of parcels
by owner mailing address
Who Owns Walla Walla County?
Share of the county’s 29,561 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 | 78.3% |
| Companies & organizations | 13.3% |
| Trusts & estates | 5.5% |
| Government | 2.4% |
| Other / unclassified | 0.4% |
The largest owner on record is WASHINGTON STATE OF with 354 parcels — see the full landowner leaderboard.
Parcel Records (~29,561 total)
| Parcel ID | Owner | Address | City | Acreage |
|---|---|---|---|---|
| 310617210003 | USA GOVERNMENT | HIGHWAY 730 WA 99323 | Unincorporated | 54.20 † |
| 310617220004 | TAYLOR RAMONA H | HIGHWAY 730 WA 99323 | Unincorporated | 14.48 † |
| 310617210003 | USA GOVERNMENT | HIGHWAY 730 WA 99323 | Unincorporated | 11.53 † |
| None | None | — | Unincorporated | 5.82 † |
| 310617210003 | USA GOVERNMENT | HIGHWAY 730 WA 99323 | Unincorporated | 83.73 † |
| 310617110002 | WHITMAN COLL BOARD OF TRUSTEES | HIGHWAY 730 WA 99323 | Unincorporated | 167.76 † |
| 310616000001 | WASHINGTON STATE OF | WA 99323 | Unincorporated | 332.13 † |
| 310615210001 | WHITMAN COLL BOARD OF TRUSTEES | SPRING GULCH RD WA 99323 | Unincorporated | 163.36 † |
| 310615110002 | WHITMAN COLL BOARD OF TRUSTEES | SPRING GULCH RD WA 99323 | Unincorporated | 169.60 † |
| 310614000001 | WHITMAN COLL BOARD OF TRUSTEES | 2738 BRADEN RANCH RD WA 99323 | Unincorporated | 334.26 † |
Download Walla Walla County parcel data
All 29,561 parcels in Walla Walla 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 Walla Walla County?
The Walla Walla County assessor roll on file records 29,561 parcels across 11 communities, with 30.5% lying outside any incorporated place.
Who owns the most land in Walla Walla County?
WASHINGTON STATE OF holds 354 parcels, the most of any owner on record — the largest-landowners leaderboard ranks the top 25.
What is the typical parcel size in Walla Walla County?
Measured from mapped boundaries, the median parcel is 0.34 acres, and nine parcels in ten are under 57.2 acres. Boundary-measured area closely tracks deeded acreage but is not the deed.
How much of Walla Walla County is owned from out of state?
8.4% of parcels list an owner mailing address outside WA, per the county’s own records.
How much of Walla Walla County is government-owned?
Government entities — federal, state, and local — hold 2.4% of the county’s parcels, classified from owner names on the roll.
How current is this data?
It comes from the Walla Walla County assessor roll dated November 2017. 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 (11)
29,561 parcels across 11 communities in Walla Walla County.