28448 is a postalcode and its consensus geometry is derived from uszcta.
{"mz:is_ceased":0,"geom:latitude":34.492213,"wof:name":"28448","counts:names_total":0,"wof:placetype":"postalcode","mz:is_current":1,"wof:hierarchy":[{"continent_id":102191575,"country_id":85633793,"county_id":102087835,"postalcode_id":554711451,"region_id":85688773}],"mz:is_deprecated":0,"lbl:latitude":34.520158,"geom:area":0.024199,"geom:longitude":-78.321986,"wof:id":554711451,"counts:concordances_total":1,"geom:type":"Polygon","wof:lastmodified":1611185336,"wof:belongsto":[102191575,85633793,102087835,85688773],"wof:concordances":{"gp:id":"12769662"},"wof:repo":"whosonfirst-data-postalcode-us","src:geom":"uszcta","wof:country":"US","counts:names_preferred":0,"gp:parent_id":"12589382","geom:area_square_m":2.46617439195133E8,"wof:tags":[],"counts:names_variant":0,"wof:breaches":[],"edtf:inception":"uuuu","iso:country":"US","counts:names_languages":0,"geom:bbox":"-78.472149,34.397015,-78.143349,34.630992","wof:superseded_by":[],"wof:supersedes":[],"lbl:longitude":-78.363175,"wof:geomhash":"e1d0e69fd2f10234849329e56d203f0c","wof:parent_id":102087835,"wof:placetype_names":["postalcode"],"mz:hierarchy_label":1,"wof:placetype_id":470996387,"edtf:cessation":"uuuu","mz:postal_locality":"Kelly"}