In our office you'll find a comprehensive selection of documents dating back to the founding of Peoria County, including:

  • Grantee index from 1825
  • Military discharges from the Civil War forward
  • Maps, including government survey field notes, original land entry, plats and surveys
  • Aerial photographs from the 1950s
  • Sanborn map 1956 including street address changes, and structural material in buildings
  • Some cemetery records
  • Many mine maps

Tract Index

Peoria County uses a tract index such that the ownership of any parcel can be followed from the original surveys to the current day. Indexes are presently maintained electronically with searches dating back to 1987 available based on name, address, tax PIN and document type.


As it’s our mission to preserve the information contained in the documents we're recording, there are very few original records on file. Our charge is to copy the document into our records and return the original to the party designated. We scan all documents to provide for the safety of our records.