54642 is a postalcode and its consensus geometry is derived from uszcta.
{"mz:is_ceased":0,"geom:latitude":44.151485,"wof:name":"54642","counts:names_total":0,"wof:placetype":"postalcode","mz:is_current":1,"wof:hierarchy":[{"continent_id":102191575,"country_id":85633793,"county_id":102081821,"localadmin_id":404493907,"postalcode_id":554728519,"region_id":85688517}],"mz:is_deprecated":0,"lbl:latitude":44.152077,"geom:area":0.027724,"geom:longitude":-91.053211,"wof:id":554728519,"counts:concordances_total":1,"geom:type":"Polygon","wof:lastmodified":1611185067,"wof:belongsto":[102191575,85633793,102081821,404493907,85688517],"wof:concordances":{"gp:id":"12781445"},"wof:repo":"whosonfirst-data-postalcode-us","src:geom":"uszcta","wof:country":"US","counts:names_preferred":0,"gp:parent_id":"2347608","geom:area_square_m":2.45967503031665E8,"wof:tags":[],"counts:names_variant":0,"wof:breaches":[],"edtf:inception":"uuuu","iso:country":"US","counts:names_languages":0,"geom:bbox":"-91.207029,44.053871,-90.93251,44.272947","wof:superseded_by":[],"wof:supersedes":[],"lbl:longitude":-91.044942,"wof:geomhash":"82b64a6411034a262bf0980d94063766","wof:parent_id":404493907,"wof:placetype_names":["postalcode"],"mz:hierarchy_label":1,"wof:placetype_id":470996387,"edtf:cessation":"uuuu","mz:postal_locality":"Melrose"}