Download McLean County, Illinois GIS parcel data - 67,680 parcels with owner names, site & mailing addresses, acreage, land use, and sale values. Instant delivery in Shapefile, FileGDB, GeoPackage, GeoJSON & CSV. $100 per county.
Data freshness: Source parcel_year in public Cadastral_Web parcel layer: 2025; last loaded into LandAI on 2026-06-05.
Every purchase includes all five export formats (Shapefile, FileGDB, GeoPackage, GeoJSON & CSV), standardized to the LandAI parcel schema with WGS84 (EPSG:4326) geometry. After checkout you choose which formats to generate and download them for 45 days.
Field completeness measured across 67,680 active parcels (Source parcel_year in public Cadastral_Web parcel layer: 2025; last loaded into LandAI on 2026-06-05):
| Field | Coverage |
|---|---|
| Owner names | 100% |
| Site addresses | 83.8% |
| Owner mailing addresses | 100% |
| Deeded acres | 63.2% |
| Calculated (GIS) acres | 100% |
These are 5 of the 48 standardized fields in the LandAI parcel schema. Live per-field completeness for every field is shown on this page's interactive view.
McLean County, Illinois has 67,680 active parcels in the LandAI dataset (source data as of 2025).
Every parcel includes the standardized LandAI schema: parcel ID and geometry plus owner names (100%), site addresses (83.8%), owner mailing addresses (100%), deeded acres (63.2%), calculated (GIS) acres (100%), and more.
Shapefile, FileGDB, GeoPackage, GeoJSON & CSV. Every $100 county purchase includes all five formats; you choose which to generate after checkout and can re-download for 45 days.
Source parcel_year in public Cadastral_Web parcel layer: 2025; last loaded into LandAI on 2026-06-05.
Yes - 100% of McLean County parcels include a normalized owner name, along with owner mailing addresses where the county provides them.
View McLean County pricing & coverage | All Illinois counties | Browse the LandAI Data Store