2 snapshots on file, newest July 2023.
Archive vintage
3 years old
278,441 parcel features, 138 attributes, 66% weighted attribute fill. Reprojected to WGS 84 (EPSG:4326); geometries repaired where invalid. Attribute fill rates measured on a 200,000-feature sample. Point-in-time snapshot. No cross-county schema normalisation.
Each row is a distinct point-in-time snapshot of Will County, not a revision of one file. Parcel counts move between vintages for real reasons — subdivision, consolidation, annexation, a re-survey — so a jump in the count is information rather than an error. This county's record here spans June 2023 to July 2023.
Archive vintages are released once they are old enough to be non-competitive; community vintages are contributed by users and published as soon as they pass verification. Both are free.