2 snapshots on file, newest October 2015.
Archive vintage
10 years old
41,483 parcel features, 69 attributes, 42% weighted attribute fill. Reprojected to WGS 84 (EPSG:4326); geometries repaired where invalid. Point-in-time snapshot. No cross-county schema normalisation.
Each row is a distinct point-in-time snapshot of Knox 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 October 2015 to October 2015.
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.