54021 is a postalcode and its consensus geometry is derived from uszcta.
{"mz:is_ceased":0,"geom:latitude":44.739065,"wof:name":"54021","counts:names_total":0,"wof:placetype":"postalcode","mz:is_current":1,"wof:hierarchy":[{"continent_id":102191575,"country_id":85633793,"county_id":102081311,"localadmin_id":404494609,"postalcode_id":554728067,"region_id":85688517}],"mz:is_deprecated":0,"lbl:latitude":44.734174,"geom:area":0.013707,"geom:longitude":-92.709772,"wof:id":554728067,"counts:concordances_total":1,"geom:type":"MultiPolygon","wof:lastmodified":1611185091,"wof:belongsto":[102191575,85633793,102081311,404494609,85688517],"wof:concordances":{"gp:id":"12781171"},"wof:repo":"whosonfirst-data-postalcode-us","src:geom":"uszcta","wof:country":"US","counts:names_preferred":0,"gp:parent_id":"12590581","geom:area_square_m":1.20395817007275E8,"wof:tags":[],"counts:names_variant":0,"wof:breaches":[],"edtf:inception":"uuuu","iso:country":"US","counts:names_languages":0,"geom:bbox":"-92.808415,44.642167,-92.618882,44.812479","wof:superseded_by":[],"wof:supersedes":[],"lbl:longitude":-92.706319,"wof:geomhash":"a1077486e2c5757a9c6285acb71d84b1","wof:parent_id":404494609,"wof:placetype_names":["postalcode"],"mz:hierarchy_label":1,"wof:placetype_id":470996387,"edtf:cessation":"uuuu","mz:postal_locality":"Prescott"}