Harper County
Parcel & Property Data
About This Data
LandBrief holds 6,848 parcel records for Harper 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 Harper County assessor roll dated July 2025, loaded August 2026. See data sources for every county’s vintage.
Explore Harper County
Harper County by the Numbers
- Median parcel size
- 40.4 acres
measured from mapped boundaries - 90th-percentile parcel
- 268.3 acres
- County land area
- 664,694 acres
U.S. Census measurement - Communities
- 6
66.1% of parcels outside any incorporated place - Out-of-state owners
- 12.0% of parcels
by owner mailing address
Who Owns Harper County?
Share of the county’s 6,848 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 | 69.5% |
| Companies & organizations | 12.4% |
| Trusts & estates | 12.3% |
| Government | 5.1% |
| Other / unclassified | 0.7% |
The largest owner on record is STATE OF OKLAHOMA with 222 parcels — see the full landowner leaderboard.
Parcel Records (~6,848 total)
| Parcel ID | Owner | Address | City | Acreage |
|---|---|---|---|---|
| 1001-00-023-014-0-001-00 | OLMSTEAD BILLY W. & | 217 DR OLIVE | Buffalo | 0.16 † |
| 0070-00-215-012-0-001-00 | RANDOLPH DANNY RAY & | 407 E ADAMS ST | Buffalo | 0.47 † |
| 0070-00-183-001-0-001-00 | SDK LAND & MINERALS LLC | E ADAMS | Unincorporated | 1.62 † |
| 1070-00-211-019-0-001-00 | WILKINSON PAM | 207 E ADAMS | Buffalo | 0.20 † |
| 1070-00-212-020-0-001-00 | KOCH JO ANN | 313 E ADAMS | Buffalo | 0.20 † |
| 1070-00-190-002-0-002-00 | YAUK EDMOND RAY | 314 E ADAMS | Buffalo | 0.08 † |
| 1070-00-186-002-0-001-00 | KETRON RUBY FAE | 322 E ADAMS | Buffalo | 0.27 † |
| 1070-00-213-018-0-001-00 | HUENERGARDT ELDON K. & | 405 E ADAMS | Buffalo | 0.27 † |
| 0070-00-216-001-0-001-00 | SDK LAND & MINERALS LLC | 425 E ADAMS | Unincorporated | 1.62 † |
| 0070-00-255-020-0-001-00 | SHAW GEORGE E. JR.(LIFE EST) | 143 E BEST | Unincorporated | 0.20 † |
Download Harper County parcel data
All 6,848 parcels in Harper County as a single file — free, no account needed. Shapefile, GeoJSON, GeoPackage, CSV and Parquet.
Get Harper County on FreeParcelData →Nearby counties
Frequently Asked Questions
How many parcels are in Harper County?
The Harper County assessor roll on file records 6,848 parcels across 6 communities, with 66.1% lying outside any incorporated place.
Who owns the most land in Harper County?
STATE OF OKLAHOMA holds 222 parcels, the most of any owner on record — the largest-landowners leaderboard ranks the top 25.
What is the typical parcel size in Harper County?
Measured from mapped boundaries, the median parcel is 40.4 acres, and nine parcels in ten are under 268.3 acres. Boundary-measured area closely tracks deeded acreage but is not the deed.
How much of Harper County is owned from out of state?
12.0% of parcels list an owner mailing address outside OK, per the county’s own records.
How much of Harper County is government-owned?
Government entities — federal, state, and local — hold 5.1% of the county’s parcels, classified from owner names on the roll.
How current is this data?
It comes from the Harper County assessor roll dated July 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 (6)
6,848 parcels across 6 communities in Harper County.