30816 is a postalcode and its consensus geometry is derived from uszcta.
{"mz:is_ceased":0,"geom:latitude":33.153622,"wof:name":"30816","counts:names_total":0,"wof:placetype":"postalcode","mz:is_current":1,"wof:hierarchy":[{"continent_id":102191575,"country_id":85633793,"county_id":102082897,"postalcode_id":554713503,"region_id":85688535}],"mz:is_deprecated":0,"lbl:latitude":33.156206,"mz:postal_locality_alt":["Wrens"],"geom:area":0.032944,"geom:longitude":-82.160945,"wof:id":554713503,"counts:concordances_total":1,"geom:type":"MultiPolygon","wof:lastmodified":1611183295,"wof:belongsto":[102191575,85633793,102082897,85688535],"wof:concordances":{"gp:id":"12771024"},"wof:repo":"whosonfirst-data-postalcode-us","src:geom":"uszcta","wof:country":"US","counts:names_preferred":0,"gp:parent_id":"12587886","geom:area_square_m":3.4104463234579E8,"wof:tags":[],"counts:names_variant":0,"wof:breaches":[],"edtf:inception":"uuuu","iso:country":"US","counts:names_languages":0,"geom:bbox":"-82.309439,33.059956,-81.980131,33.251686","wof:superseded_by":[],"wof:supersedes":[],"lbl:longitude":-82.166263,"wof:geomhash":"2f62ae4caf0178a83ef14b4d82bd3203","wof:parent_id":102082897,"wof:placetype_names":["postalcode"],"mz:hierarchy_label":1,"wof:placetype_id":470996387,"edtf:cessation":"uuuu","mz:postal_locality":"Keysville"}