25311 is a postalcode and its consensus geometry is derived from uszcta.
{"mz:is_ceased":0,"geom:latitude":38.363131,"wof:name":"25311","counts:names_total":0,"wof:placetype":"postalcode","mz:is_current":1,"wof:hierarchy":[{"continent_id":102191575,"country_id":85633793,"county_id":102083335,"postalcode_id":554709527,"region_id":85688589}],"mz:is_deprecated":0,"lbl:latitude":38.366863,"geom:area":0.007629,"geom:longitude":-81.549257,"wof:id":554709527,"counts:concordances_total":1,"geom:type":"Polygon","wof:lastmodified":1611183001,"wof:belongsto":[102191575,85633793,102083335,85688589],"wof:concordances":{"gp:id":"12768249"},"wof:repo":"whosonfirst-data-postalcode-us","src:geom":"uszcta","wof:country":"US","counts:names_preferred":0,"geom:area_square_m":7.3964869886086E7,"wof:tags":[],"counts:names_variant":0,"wof:breaches":[],"edtf:inception":"uuuu","iso:country":"US","counts:names_languages":0,"geom:bbox":"-81.629492,38.321526,-81.472536,38.402969","wof:superseded_by":[],"wof:supersedes":[],"lbl:longitude":-81.557035,"wof:geomhash":"4fe345411fca718c082ca820cebe7b49","wof:parent_id":102083335,"wof:placetype_names":["postalcode"],"mz:hierarchy_label":1,"wof:placetype_id":470996387,"edtf:cessation":"uuuu","mz:postal_locality":"Charleston"}