23460 is a postalcode and its consensus geometry is derived from uszcta.
{"mz:is_ceased":0,"geom:latitude":36.807977,"wof:name":"23460","counts:names_total":0,"wof:placetype":"postalcode","wof:hierarchy":[{"continent_id":102191575,"country_id":85633793,"county_id":102081929,"locality_id":101728745,"postalcode_id":554780861,"region_id":85688747}],"mz:is_deprecated":0,"lbl:latitude":36.807977,"geom:area":5.7E-5,"geom:longitude":-76.028412,"wof:id":554780861,"counts:concordances_total":1,"geom:type":"Polygon","wof:lastmodified":1480830804,"wof:belongsto":[85688747,102191575,85633793,101728745,102081929],"wof:concordances":{"gp:id":"12767397"},"wof:repo":"whosonfirst-data-postalcode-us","src:geom":"uszcta","wof:country":"US","counts:names_preferred":0,"geom:area_square_m":562371.364979,"wof:tags":[],"counts:names_variant":0,"wof:breaches":[],"edtf:inception":"uuuu","iso:country":"US","counts:names_languages":0,"geom:bbox":"-76.034602,36.803307,-76.022086,36.812778","wof:superseded_by":[],"wof:supersedes":[],"lbl:longitude":-76.028412,"wof:geomhash":"5ccb9a9df0f752f1c5a68233c49d79d8","wof:parent_id":101728745,"wof:placetype_names":["postalcode"],"mz:hierarchy_label":1,"wof:placetype_id":470996387,"edtf:cessation":"uuuu"}