Dewey County
Parcel & Property Data
About This Data
LandBrief holds 12,506 parcel records for Dewey 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 Dewey County assessor roll dated August 2022, loaded August 2026. See data sources for every county’s vintage.
Explore Dewey County
Dewey County by the Numbers
- Median parcel size
- 159.7 acres
measured from mapped boundaries - 90th-percentile parcel
- 160.3 acres
- County land area
- 1,473,521 acres
U.S. Census measurement - Communities
- 11
87.7% of parcels outside any incorporated place
Who Owns Dewey County?
Share of the county’s 12,506 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 | 32.5% |
| Companies & organizations | 6.6% |
| Trusts & estates | 3.3% |
| Government | 3.4% |
| Other / unclassified | 54.2% |
The largest owner on record is MACIEJEWSKI RANCH LIMITED PARTNERSHIP with 208 parcels — see the full landowner leaderboard.
Parcel Records (~12,506 total)
| Parcel ID | Owner | Address | City | Acreage |
|---|---|---|---|---|
| 30-0000-025-0013-025-3-0-00001 | USA IN TRUST FOR STEVEN ABERLE | — | Unincorporated | 320.00 |
| 41-0000-036-0014-026-1-0-00001 | USA IN TRUST FOR STEVEN ABERLE | — | Unincorporated | 320.00 |
| 24-0000-004-0012-028-1-0-00101 | BROWN JAMES R & BROWN MICHAEL J | — | Unincorporated | 192.84 |
| 24-0000-003-0012-028-2-0-00001 | BROWN JAMES R & BROWN MICHAEL J | — | Unincorporated | 192.74 |
| 24-0000-003-0012-028-1-0-00001 | J JAMES R & J MICHAEL J & REECE BROWN AS J | — | Unincorporated | 192.62 |
| 24-0000-006-0012-028-1-0-00001 | BROWN JAMES R & BROWN MICHAEL J | — | Unincorporated | 192.49 |
| 22-0000-002-0012-026-1-0-00001 | SIMON CLINTON R & SIMON CATHERINE R | — | Unincorporated | 189.95 |
| 22-0000-002-0012-026-2-0-00001 | SIMON CLINTON R & SIMON CATHERINE R | — | Unincorporated | 189.85 |
| 22-0000-003-0012-026-1-0-00001 | WRIGHT JAMES & WRIGHT SHARON | — | Unincorporated | 189.69 |
| 22-0000-003-0012-026-2-0-00001 | WRIGHT JAMES & WRIGHT SHARON | — | Unincorporated | 189.47 |
Download Dewey County parcel data
All 12,506 parcels in Dewey County as a single file — free, no account needed. Shapefile, GeoJSON, GeoPackage, CSV and Parquet.
Get Dewey County on FreeParcelData →Nearby counties
Frequently Asked Questions
How many parcels are in Dewey County?
The Dewey County assessor roll on file records 12,506 parcels across 11 communities, with 87.7% lying outside any incorporated place.
Who owns the most land in Dewey County?
MACIEJEWSKI RANCH LIMITED PARTNERSHIP holds 208 parcels, the most of any owner on record — the largest-landowners leaderboard ranks the top 25.
What is the typical parcel size in Dewey County?
Measured from mapped boundaries, the median parcel is 159.7 acres, and nine parcels in ten are under 160.3 acres. Boundary-measured area closely tracks deeded acreage but is not the deed.
How much of Dewey County is government-owned?
Government entities — federal, state, and local — hold 3.4% of the county’s parcels, classified from owner names on the roll.
How current is this data?
It comes from the Dewey County assessor roll dated August 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 (11)
12,506 parcels across 11 communities in Dewey County.