54636 is a postalcode and its consensus geometry is derived from uszcta.
{"mz:is_ceased":0,"geom:latitude":44.007556,"wof:name":"54636","counts:names_total":0,"wof:placetype":"postalcode","mz:is_current":1,"wof:hierarchy":[{"continent_id":102191575,"country_id":85633793,"county_id":102081301,"localadmin_id":404493459,"postalcode_id":554728511,"region_id":85688517}],"mz:is_deprecated":0,"lbl:latitude":44.002965,"mz:postal_locality_alt":["Viroqua"],"geom:area":0.024359,"geom:longitude":-91.226571,"wof:id":554728511,"counts:concordances_total":1,"geom:type":"MultiPolygon","wof:lastmodified":1611185070,"wof:belongsto":[102191575,85633793,102081301,404493459,85688517],"wof:concordances":{"gp:id":"12781439"},"wof:repo":"whosonfirst-data-postalcode-us","src:geom":"uszcta","wof:country":"US","counts:names_preferred":0,"gp:parent_id":"12590565","geom:area_square_m":2.16639220989744E8,"wof:tags":[],"counts:names_variant":0,"wof:breaches":[],"edtf:inception":"uuuu","iso:country":"US","counts:names_languages":0,"geom:bbox":"-91.344678,43.923321,-91.10978,44.090584","wof:superseded_by":[],"wof:supersedes":[],"lbl:longitude":-91.224012,"wof:geomhash":"1c6f8ea766ef5b428f45a98db10b8b7a","wof:parent_id":404493459,"wof:placetype_names":["postalcode"],"mz:hierarchy_label":1,"wof:placetype_id":470996387,"edtf:cessation":"uuuu","mz:postal_locality":"Holmen"}