66540 is a postalcode and its consensus geometry is derived from figov.
{"mz:is_ceased":0,"geom:latitude":63.24493,"figov:nimi":"Petsmo","wof:name":"66540","counts:names_total":0,"wof:placetype":"postalcode","wof:hierarchy":[{"continent_id":102191581,"country_id":85633143,"macroregion_id":404227417,"postalcode_id":421477225,"region_id":85683119}],"mz:is_deprecated":0,"lbl:latitude":63.220903,"geom:area":0.008163,"geom:longitude":21.783612,"wof:id":421477225,"counts:concordances_total":1,"geom:type":"MultiPolygon","wof:lastmodified":1469577651,"wof:belongsto":[102191581,85633143,85683119,404227417],"wof:concordances":{"gp:id":"12830071"},"wof:repo":"whosonfirst-data-postalcode-fi","src:geom":"figov","wof:country":"FI","counts:names_preferred":0,"gp:parent_id":"12591062","wof:tags":[],"counts:names_variant":0,"wof:breaches":[],"edtf:inception":"uuuu","iso:country":"FI","counts:names_languages":0,"geom:bbox":"21.6405662805,63.1890174321,21.895382139,63.399111774","src:lbl:centroid":"mapshaper","wof:superseded_by":[],"wof:supersedes":[],"lbl:longitude":21.791781,"wof:geomhash":"bd8a8cd29569f53f9bcbc4b93b3efe39","wof:parent_id":85683119,"wof:placetype_names":["postalcode"],"mz:hierarchy_label":1,"wof:placetype_id":470996387,"edtf:cessation":"uuuu"}