87420 is a postalcode and its consensus geometry is derived from frgov.
{"mz:is_ceased":0,"geom:latitude":45.877139,"wof:name":"87420","counts:names_total":0,"wof:placetype":"postalcode","frgov:DEP":"87","frgov:ID":"87420","frgov:_COL6":790.502,"mz:is_approximate":1,"wof:hierarchy":[{"continent_id":102191581,"country_id":85633147,"county_id":102068849,"empire_id":136253037,"localadmin_id":404356429,"macrocounty_id":404228177,"macroregion_id":1108826385,"postalcode_id":421309013,"region_id":85683531}],"mz:is_deprecated":0,"frgov:SURF":26.671958,"geom:area":0.003099,"geom:longitude":1.028123,"wof:id":421309013,"frgov:LIB":"Saint-Victurnien","counts:concordances_total":1,"geom:type":"MultiPolygon","wof:lastmodified":1496507957,"wof:belongsto":[85683531,102191581,85633147,404356429,404228177,1108826385,136253037,102068849],"wof:concordances":{"gp:id":"12728049"},"wof:repo":"whosonfirst-data-postalcode-fr","src:geom":"frgov","wof:country":"FR","counts:names_preferred":0,"frgov:POP2010":1877,"gp:parent_id":"12597196","geom:area_square_m":2.6675295203208E7,"wof:tags":[],"counts:names_variant":0,"wof:breaches":[],"edtf:inception":"uuuu","iso:country":"FR","counts:names_languages":0,"geom:bbox":"0.977566911876,45.8442173759,1.08287047433,45.9050063802","wof:superseded_by":[],"wof:supersedes":[],"wof:geomhash":"41760c51fd203c6b41a5d01d8a0917f0","wof:parent_id":404356429,"wof:placetype_names":["postalcode"],"mz:hierarchy_label":1,"wof:placetype_id":470996387,"edtf:cessation":"uuuu"}