58579 is a postalcode and its consensus geometry is derived from uszcta.
{"mz:is_ceased":0,"geom:latitude":47.181998,"wof:name":"58579","counts:names_total":0,"wof:placetype":"postalcode","mz:is_current":1,"wof:hierarchy":[{"continent_id":102191575,"country_id":85633793,"county_id":102082107,"localadmin_id":404478823,"postalcode_id":554732165,"region_id":85688525}],"mz:is_deprecated":0,"lbl:latitude":47.179421,"geom:area":0.080364,"geom:longitude":-100.740029,"wof:id":554732165,"counts:concordances_total":1,"geom:type":"Polygon","wof:lastmodified":1611184387,"wof:belongsto":[102191575,85633793,102082107,404478823,85688525],"wof:concordances":{"gp:id":"12783407"},"wof:repo":"whosonfirst-data-postalcode-us","src:geom":"uszcta","wof:country":"US","counts:names_preferred":0,"gp:parent_id":"2347593","geom:area_square_m":6.75399154755535E8,"wof:tags":[],"counts:names_variant":0,"wof:breaches":[],"edtf:inception":"uuuu","iso:country":"US","counts:names_languages":0,"geom:bbox":"-100.971476,47.029697,-100.514209,47.338865","wof:superseded_by":[],"wof:supersedes":[],"lbl:longitude":-100.738366,"wof:geomhash":"8a0fa5b8f2620e2429b308f281d6ad73","wof:parent_id":404478823,"wof:placetype_names":["postalcode"],"mz:hierarchy_label":1,"wof:placetype_id":470996387,"edtf:cessation":"uuuu","mz:postal_locality":"Wilton"}