ParcelioRock County, Wisconsin: parcel data and property records
73,143 Rock County parcels on one searchable map: owner of record and mailing address, assessed and appraised values and recorded sales, plus lot boundaries and location. Screen by absentee ownership, acreage and owner tenure.
What the data covers
These bars show real field-by-field coverage for Rock County in our database, so you know exactly what you are getting before you search. Numbers refresh as the county publishes new records.
Not held for Rock County: year built and vacancy. Those fields are carried where the county publishes them.
Most recent recorded sale on file: 2026-09-01.
Areas covered
Parcel counts by place, largest first: Janesville (25,263), Beloit (13,489), Town Of Beloit (4,306), Town Of Fulton (2,907), Milton (2,560).
Recent sales
4,126 Rock County parcels have a recorded sale dated since November 2025. Across 2,273 priced sales, with a deed recorded on several parcels counted once, the median price was $270,000 and the middle half sold between $170,000 and $375,000.
Nearest counties
- Green County: about 27 mi away, 28,052 parcels
- Walworth County: about 27 mi away, 69,231 parcels
- Jefferson County: about 29 mi away, 45,169 parcels
- Dane County: about 33 mi away, 218,857 parcels
- Waukesha County: about 46 mi away, 164,715 parcels
Search Rock County parcels
The map is free to browse - parcel lines, boundaries, and location. Owner of record, assessed values, recorded sales and the full parcel report come with a plan that costs less than one hour of a title runner's time.
Explore the Rock County map See plans
Common questions
How many parcels are in Rock County, Wisconsin?
Parcelio carries 73,143 parcel records for Rock County, Wisconsin, with owner information on 99 percent of them.
Can I find out who owns a property in Rock County?
Yes. Search by owner name, address, or parcel number to pull the record: owner of record and mailing address, assessed values, recorded sales and lot lines on the map. Sale records here currently run through 2026-09-01.
How do I find vacant land or absentee owners in Rock County?
We do not hold vacancy data for Rock County yet, so this filter has nothing to match there. Vacancy filters work in the counties where we hold the field. Rock County does have owner mailing state: 3,214 parcels have an owner mailing address outside Wisconsin.
Can I search Rock County by lot size or acreage?
Yes. Acreage is on 99 percent of Rock County parcels, mapped from the parcel boundary, and the advanced search filters on it directly - set a minimum and maximum to pull every tract in that range, then stack vacancy or absentee ownership on top.