ParcelioMercer County, Illinois: parcel data and property records
13,039 Mercer 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 Mercer 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 Mercer County: year built, land use or property class, zoning and vacancy. Those fields are carried where the county publishes them.
Most recent recorded sale on file: 2026-10-30.
Areas covered
Parcel counts by place, largest first: Aledo (2,702), Sherrard (1,379), New Boston (1,154), Viola (768), Joy (661).
Recent sales
284 Mercer County parcels have a recorded sale dated since November 2025. Across 284 priced sales, with a deed recorded on several parcels counted once, the median price was $140,000 and the middle half sold between $65,000 and $215,000.
Nearest counties
- Rock Island County: about 20 mi away, 65,806 parcels
- Warren County: about 25 mi away, 12,807 parcels
- Henderson County: about 29 mi away, 7,135 parcels
- Henry County: about 33 mi away, 31,221 parcels
- Knox County: about 33 mi away, 32,965 parcels
Search Mercer 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 Mercer County map See plans
Common questions
How many parcels are in Mercer County, Illinois?
Parcelio carries 13,039 parcel records for Mercer County, Illinois, with owner information on 99 percent of them.
Can I find out who owns a property in Mercer 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 2026-10-30.
How do I find vacant land or absentee owners in Mercer County?
We do not hold vacancy data for Mercer County yet, so this filter has nothing to match there. Vacancy filters work in the counties where we hold the field. Mercer County does have owner mailing state: 1,195 parcels have an owner mailing address outside Illinois.
Can I search Mercer County by lot size or acreage?
Yes. Acreage is on 99 percent of Mercer 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.