91290 is a postalcode and its consensus geometry is derived from frgov.
{"mz:is_ceased":0,"geom:latitude":48.584716,"wof:name":"91290","counts:names_total":0,"wof:placetype":"postalcode","frgov:DEP":"91","frgov:ID":"91290","frgov:_COL6":6251.2,"mz:is_approximate":1,"wof:hierarchy":[{"continent_id":102191581,"country_id":85633147,"county_id":102064411,"localadmin_id":404407343,"locality_id":101749657,"macrocounty_id":404228183,"macroregion_id":404227465,"postalcode_id":421309405,"region_id":85683371}],"mz:is_deprecated":0,"frgov:SURF":6.809238,"geom:area":8.33E-4,"geom:longitude":2.257971,"wof:id":421309405,"frgov:LIB":"Arpajon","counts:concordances_total":1,"geom:type":"MultiPolygon","wof:lastmodified":1480789236,"wof:belongsto":[85683371,102191581,85633147,404407343,404228183,404227465,101749657,102064411],"wof:concordances":{"gp:id":"12728223"},"wof:repo":"whosonfirst-data-postalcode-fr","src:geom":"frgov","wof:country":"FR","counts:names_preferred":0,"frgov:POP2010":14649,"gp:parent_id":"12597118","geom:area_square_m":6809689.640527,"wof:tags":[],"counts:names_variant":0,"wof:breaches":[],"edtf:inception":"uuuu","iso:country":"FR","counts:names_languages":0,"geom:bbox":"2.23489541749,48.5725114987,2.29043512524,48.6036934073","wof:superseded_by":[],"wof:supersedes":[],"wof:geomhash":"ba7473eae7d3c3f01dee2de92a2871b7","wof:parent_id":101749657,"wof:placetype_names":["postalcode"],"mz:hierarchy_label":1,"wof:placetype_id":470996387,"edtf:cessation":"uuuu"}