02554 is a postalcode and its consensus geometry is derived from uszcta.
{"mz:is_ceased":0,"geom:latitude":41.287672,"wof:name":"02554","counts:names_total":0,"wof:placetype":"postalcode","mz:is_current":1,"wof:hierarchy":[{"continent_id":102191575,"country_id":85633793,"county_id":102084641,"localadmin_id":404476421,"locality_id":85950503,"postalcode_id":554778435,"region_id":85688645}],"mz:is_deprecated":0,"lbl:latitude":41.291072,"mz:postal_locality_alt":["Cataumet","Edgartown"],"geom:area":0.015781,"geom:longitude":-70.094721,"wof:id":554778435,"counts:concordances_total":1,"geom:type":"MultiPolygon","wof:lastmodified":1611183443,"wof:belongsto":[102191575,85633793,102084641,404476421,85950503,85688645],"wof:concordances":{"gp:id":"12758884"},"wof:repo":"whosonfirst-data-postalcode-us","src:geom":"uszcta","wof:country":"US","counts:names_preferred":0,"geom:area_square_m":1.46620840159923E8,"wof:tags":[],"counts:names_variant":0,"wof:breaches":[],"edtf:inception":"uuuu","iso:country":"US","counts:names_languages":0,"geom:bbox":"-70.315411,41.239513,-69.973881,41.39344","wof:superseded_by":[],"wof:supersedes":[],"lbl:longitude":-70.093328,"wof:geomhash":"56234ab326cd798632651437c671977d","wof:parent_id":85950503,"wof:placetype_names":["postalcode"],"mz:hierarchy_label":1,"wof:placetype_id":470996387,"edtf:cessation":"uuuu","mz:postal_locality":"Nantucket"}