Winnebago County
Parcel & Property Data
About This Data
LandBrief holds 12,615 parcel records for Winnebago 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 Winnebago County assessor roll dated November 2022, loaded August 2026. See data sources for every county’s vintage.
Explore Winnebago County
Winnebago County by the Numbers
- Median parcel size
- 12.2 acres
measured from mapped boundaries - 90th-percentile parcel
- 40.2 acres
- County land area
- 256,313 acres
U.S. Census measurement - Communities
- 8
63.8% of parcels outside any incorporated place
Who Owns Winnebago County?
Share of the county’s 12,615 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 | 65.2% |
| Companies & organizations | 14.4% |
| Trusts & estates | 15.9% |
| Government | 3.4% |
| Other / unclassified | 1.1% |
The largest owner on record is THOMPSON FAMILY ENTERPRISES INC with 94 parcels — see the full landowner leaderboard.
Parcel Records (~12,615 total)
| Parcel ID | Owner | Address | City | Acreage |
|---|---|---|---|---|
| 0611100006 | IOWA DEPT OF NATURAL RESOURCES | — | Unincorporated | 285.10 |
| 0309100001 | SCHROADER BEATA FAMILY REVOCABLE TRUST | 15204 500TH ST SCARVILLE | Unincorporated | 257.50 |
| 0236400001 | IOWA DEPT OF NATURAL RESOURCES | — | Unincorporated | 232.35 |
| 0706400004 | IOWA CAGEFREE LLLP | 13780 450TH ST THOMPSON | Unincorporated | 231.64 |
| 0324300005 | IOWA DEPT OF NATURAL RESOURCES | — | Unincorporated | 224.95 |
| 0827300003 | WINNEBAGO COUNTY | — | Unincorporated | 193.18 |
| 0813100003 | STATE OF IOWA | 43000 235TH AVE LAKE MILLS | Unincorporated | 180.69 |
| 1217400001 | EATON MARK KALLIOPE | — | Unincorporated | 180.17 |
| 0613100004 | JOHNSON WAYNE E GLORIA E | — | Unincorporated | 172.23 |
| 0601100008 | IOWA DEPT OF NATURAL RESOURCES | — | Unincorporated | 161.54 |
Download Winnebago County parcel data
All 12,615 parcels in Winnebago County as a single file — free, no account needed. Shapefile, GeoJSON, GeoPackage, CSV and Parquet.
Get Winnebago County on FreeParcelData →Nearby counties
Frequently Asked Questions
How many parcels are in Winnebago County?
The Winnebago County assessor roll on file records 12,615 parcels across 8 communities, with 63.8% lying outside any incorporated place.
Who owns the most land in Winnebago County?
THOMPSON FAMILY ENTERPRISES INC holds 94 parcels, the most of any owner on record — the largest-landowners leaderboard ranks the top 25.
What is the typical parcel size in Winnebago County?
Measured from mapped boundaries, the median parcel is 12.2 acres, and nine parcels in ten are under 40.2 acres. Boundary-measured area closely tracks deeded acreage but is not the deed.
How much of Winnebago 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 Winnebago County assessor roll dated November 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 (8)
12,615 parcels across 8 communities in Winnebago County.