Washington County
Parcel & Property Data
About This Data
LandBrief holds 7,989 parcel records for Washington 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 Washington County assessor roll dated June 2025, loaded August 2026. See data sources for every county’s vintage.
Explore Washington County
Washington County by the Numbers
- Median parcel size
- 33.8 acres
measured from mapped boundaries - 90th-percentile parcel
- 160.7 acres
- County land area
- 572,646 acres
U.S. Census measurement - Communities
- 13
64.6% of parcels outside any incorporated place
Who Owns Washington County?
Share of the county’s 7,989 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 | 62.8% |
| Companies & organizations | 10.7% |
| Trusts & estates | 25.3% |
| Government | 0.3% |
| Other / unclassified | 0.9% |
The largest owner on record is TUMA, ROBERT L AMY D with 47 parcels — see the full landowner leaderboard.
Parcel Records (~7,989 total)
| Parcel ID | Owner | Address | City | Acreage |
|---|---|---|---|---|
| 1010130700000002000 | Boettcher Family Trust | 29TH RD, Hollenberg, KS 66946 | Unincorporated | 146.50 † |
| 1010130800000003000 | Meyer, Justin A Cynthia A | YANKEE RD, Hanover, KS 66945 | Unincorporated | 199.45 † |
| 1010130800000006000 | CARBAUGH, LOIS | ZENITH RD, Hanover, KS 66945 | Unincorporated | 79.43 † |
| 1010130700000005000 | Meyer Trust, James A Karen M Meyer, Jared S Janelle M | YANKEE RD, Hollenberg, KS 66946 | Unincorporated | 78.70 † |
| 1010130700000004000 | THOMSEN TR #1, ELDON EUNICE | 2557 28TH RD, Hollenberg, KS 66946 | Unincorporated | 161.16 † |
| 1010130800000005000 | DOUBLE J ENTERPRISES LLC | ZENITH RD, Hanover, KS 66945 | Unincorporated | 79.46 † |
| 1010130700000003000 | Grefe, Delbert Wanda BARGMANN, NATHAN F | 28TH RD, Hollenberg, KS 66946 | Unincorporated | 69.57 † |
| 1010141700000001000 | CHURCH, ST JOHNS CATHOLIC | ZENITH RD, Hanover, KS 66945 | Unincorporated | 198.37 † |
| 1010141700000002000 | Bruce Revocable Trust, Jon Suzanna Lea Family Trust, David Patricia Bruce, Thomas Lois | 2766 YANKEE RD, Hanover, KS 66945 | Unincorporated | 160.09 † |
| 1010141800000001000 | Meyer, Justin A Cynthia A | 28TH RD, Hollenberg, KS 66946 | Unincorporated | 19.27 † |
Download Washington County parcel data
All 7,989 parcels in Washington County as a single file — free, no account needed. Shapefile, GeoJSON, GeoPackage, CSV and Parquet.
Get Washington County on FreeParcelData →Nearby counties
Frequently Asked Questions
How many parcels are in Washington County?
The Washington County assessor roll on file records 7,989 parcels across 13 communities, with 64.6% lying outside any incorporated place.
Who owns the most land in Washington County?
TUMA, ROBERT L AMY D holds 47 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 33.8 acres, and nine parcels in ten are under 160.7 acres. Boundary-measured area closely tracks deeded acreage but is not the deed.
How much of Washington County is government-owned?
Government entities — federal, state, and local — hold 0.3% 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 June 2025. 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 (13)
7,989 parcels across 13 communities in Washington County.