30530 is a postalcode and its consensus geometry is derived from uszcta.
{"mz:is_ceased":0,"geom:latitude":34.225745,"wof:name":"30530","counts:names_total":0,"wof:placetype":"postalcode","mz:is_current":1,"wof:hierarchy":[{"continent_id":102191575,"country_id":85633793,"county_id":102084663,"postalcode_id":554713239,"region_id":85688535}],"mz:is_deprecated":0,"lbl:latitude":34.222921,"geom:area":0.020021,"geom:longitude":-83.38434,"wof:id":554713239,"counts:concordances_total":1,"geom:type":"Polygon","wof:lastmodified":1611183332,"wof:belongsto":[102191575,85633793,102084663,85688535],"wof:concordances":{"gp:id":"12770876"},"wof:repo":"whosonfirst-data-postalcode-us","src:geom":"uszcta","wof:country":"US","counts:names_preferred":0,"geom:area_square_m":2.0469593480497E8,"wof:tags":[],"counts:names_variant":0,"wof:breaches":[],"edtf:inception":"uuuu","iso:country":"US","counts:names_languages":0,"geom:bbox":"-83.456716,34.116196,-83.292288,34.36185","wof:superseded_by":[],"wof:supersedes":[],"lbl:longitude":-83.393799,"wof:geomhash":"6c33c688bc44a716df1f788f03c1d5d9","wof:parent_id":102084663,"wof:placetype_names":["postalcode"],"mz:hierarchy_label":1,"wof:placetype_id":470996387,"edtf:cessation":"uuuu","mz:postal_locality":"Commerce"}