54425 is a postalcode and its consensus geometry is derived from uszcta.
{"mz:is_ceased":0,"geom:latitude":45.009258,"wof:name":"54425","counts:names_total":0,"wof:placetype":"postalcode","mz:is_current":1,"wof:hierarchy":[{"continent_id":102191575,"country_id":85633793,"county_id":102081269,"localadmin_id":404491601,"locality_id":101732467,"postalcode_id":554728255,"region_id":85688517}],"mz:is_deprecated":0,"lbl:latitude":45.006838,"geom:area":0.01307,"geom:longitude":-90.339713,"wof:id":554728255,"counts:concordances_total":1,"geom:type":"Polygon","wof:lastmodified":1611185091,"wof:belongsto":[102191575,85633793,102081269,404491601,101732467,85688517],"wof:concordances":{"gp:id":"12781302"},"wof:repo":"whosonfirst-data-postalcode-us","src:geom":"uszcta","wof:country":"US","counts:names_preferred":0,"gp:parent_id":"2347608","geom:area_square_m":1.1426110558362E8,"wof:tags":[],"counts:names_variant":0,"wof:breaches":[],"edtf:inception":"uuuu","iso:country":"US","counts:names_languages":0,"geom:bbox":"-90.434141,44.958813,-90.179913,45.06103","wof:superseded_by":[],"wof:supersedes":[],"lbl:longitude":-90.341197,"wof:geomhash":"5a14b7d3b805e122eb414891cec00469","wof:parent_id":101732467,"wof:placetype_names":["postalcode"],"mz:hierarchy_label":1,"wof:placetype_id":470996387,"edtf:cessation":"uuuu","mz:postal_locality":"Dorchester"}