30047 is a postalcode and its consensus geometry is derived from uszcta.
{"mz:is_ceased":0,"geom:latitude":33.870646,"wof:name":"30047","counts:names_total":0,"wof:placetype":"postalcode","mz:is_current":1,"wof:hierarchy":[{"continent_id":102191575,"country_id":85633793,"county_id":102082967,"postalcode_id":554712719,"region_id":85688535}],"mz:is_deprecated":0,"lbl:latitude":33.871867,"mz:postal_locality_alt":["Lawrenceville"],"geom:area":0.007084,"geom:longitude":-84.112671,"wof:id":554712719,"counts:concordances_total":1,"geom:type":"MultiPolygon","wof:lastmodified":1611183736,"wof:belongsto":[102191575,85633793,102082967,85688535],"wof:concordances":{"gp:id":"12770532"},"wof:repo":"whosonfirst-data-postalcode-us","src:geom":"uszcta","wof:country":"US","counts:names_preferred":0,"geom:area_square_m":7.2733272337563E7,"wof:tags":[],"counts:names_variant":0,"wof:breaches":[],"edtf:inception":"uuuu","iso:country":"US","counts:names_languages":0,"geom:bbox":"-84.178124,33.805189,-84.042662,33.923688","wof:superseded_by":[],"wof:supersedes":[],"lbl:longitude":-84.112585,"wof:geomhash":"06710ae2342b209aef42f27b3e8c6ce4","wof:parent_id":102082967,"wof:placetype_names":["postalcode"],"mz:hierarchy_label":1,"wof:placetype_id":470996387,"edtf:cessation":"uuuu","mz:postal_locality":"Lilburn"}