28212 is a postalcode and its consensus geometry is derived from uszcta.
{"mz:is_ceased":0,"geom:latitude":35.18942,"wof:name":"28212","counts:names_total":0,"wof:placetype":"postalcode","mz:is_current":1,"wof:hierarchy":[{"continent_id":102191575,"country_id":85633793,"county_id":102080981,"locality_id":85981333,"postalcode_id":554711233,"region_id":85688773}],"mz:is_deprecated":0,"lbl:latitude":35.187703,"geom:area":0.002383,"geom:longitude":-80.745116,"wof:id":554711233,"counts:concordances_total":1,"geom:type":"Polygon","wof:lastmodified":1611185315,"wof:belongsto":[102191575,85633793,102080981,85981333,85688773],"wof:concordances":{"gp:id":"12769476"},"wof:repo":"whosonfirst-data-postalcode-us","src:geom":"uszcta","wof:country":"US","counts:names_preferred":0,"geom:area_square_m":2.4083153963733E7,"wof:tags":[],"counts:names_variant":0,"wof:breaches":[],"edtf:inception":"uuuu","iso:country":"US","counts:names_languages":0,"geom:bbox":"-80.776402,35.148923,-80.719579,35.224333","wof:superseded_by":[],"wof:supersedes":[],"lbl:longitude":-80.744556,"wof:geomhash":"19494d923947e4ff257c79cb89c42d72","wof:parent_id":85981333,"wof:placetype_names":["postalcode"],"mz:hierarchy_label":1,"wof:placetype_id":470996387,"edtf:cessation":"uuuu","mz:postal_locality":"Charlotte"}