Ottawa County
Parcel & Property Data
About This Data
LandBrief holds 22,595 parcel records for Ottawa 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 Ottawa County assessor roll dated July 2026, loaded August 2026. See data sources for every county’s vintage.
Explore Ottawa County
Ottawa County by the Numbers
- Median parcel size
- 0.62 acres
measured from mapped boundaries - 90th-percentile parcel
- 40.1 acres
- County land area
- 301,323 acres
U.S. Census measurement - Communities
- 11
52.8% of parcels outside any incorporated place - Median assessed value
- $45,427
95% of parcels carry a value
Who Owns Ottawa County?
Share of the county’s 22,595 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 | 75.7% |
| Companies & organizations | 9.3% |
| Trusts & estates | 7.8% |
| Government | 5.7% |
| Other / unclassified | 1.5% |
The largest owner on record is QUAPAW TRIBE OF INDIANS OF OK with 512 parcels — see the full landowner leaderboard.
Parcel Records (~22,595 total)
| Parcel ID | Owner | Address | City | Acreage | Market Value |
|---|---|---|---|---|---|
| 000 | — | — | Unincorporated | 4.22 † | — |
| 000000000 | — | — | Unincorporated | 10.80 † | — |
| 580000002 | SMALLEY, BOB G BETTY J | 23451 S 550 RD | Unincorporated | 10.00 † | $54,308 |
| 580000003 | MCKINZIE, KENNETH LEROY JR SHANNON REN | 54701 E HWY 59 | Unincorporated | 8.81 † | $163,415 |
| 580000004 | SEVERS, BOBBY JOE VIOLETA L. | 23011 S 550 RD | Unincorporated | 8.87 † | $57,910 |
| 580000005 | UGLEAN BLACKWOOD FAMILY REVOCABLE LIVI | 23251 S 550 RD | Unincorporated | 119.05 † | $263,929 |
| 580000006 | CHANDLER, JAMES | — | Unincorporated | 1.01 † | $7,020 |
| 580000007 | MORGAN, ARTHUR A JR DEANNE RAE | 54401 E HWY 59 | Unincorporated | 8.74 † | $33,522 |
| 580000008 | MORGAN, ARTHUR A JR DEANNE RAE | — | Unincorporated | 90.47 † | $21,209 |
| 580000009 | DOWNS, STEPHANIE S JUSTIN M | 23090 S 540 RD | Unincorporated | 1.84 † | $172,828 |
Download Ottawa County parcel data
All 22,595 parcels in Ottawa County as a single file — free, no account needed. Shapefile, GeoJSON, GeoPackage, CSV and Parquet.
Get Ottawa County on FreeParcelData →Nearby counties
Frequently Asked Questions
How many parcels are in Ottawa County?
The Ottawa County assessor roll on file records 22,595 parcels across 11 communities, with 52.8% lying outside any incorporated place.
Who owns the most land in Ottawa County?
QUAPAW TRIBE OF INDIANS OF OK holds 512 parcels, the most of any owner on record — the largest-landowners leaderboard ranks the top 25.
What is the typical parcel size in Ottawa County?
Measured from mapped boundaries, the median parcel is 0.62 acres, and nine parcels in ten are under 40.1 acres. Boundary-measured area closely tracks deeded acreage but is not the deed.
How much of Ottawa County is government-owned?
Government entities — federal, state, and local — hold 5.7% of the county’s parcels, classified from owner names on the roll.
How current is this data?
It comes from the Ottawa County assessor roll dated July 2026. 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)
22,595 parcels across 11 communities in Ottawa County.