Birch Island is a locality and its consensus geometry is derived from geonames.
{"gn:population":0,"geom:latitude":39.13144,"gn:name":"Birch Island","wof:name":"Birch Island","counts:names_total":0,"gn:feature_code":"PPL","gn:feature_class":"P","mz:is_current":-1,"wof:hierarchy":[{"continent_id":102191575,"country_id":85633793,"county_id":102087559,"localadmin_id":404497421,"locality_id":1310025587,"region_id":85688697}],"gn:dem":138,"gn:elevation":"132.0","mz:min_zoom":12,"lbl:min_zoom":13.5,"geom:area":0,"gn:admin2_code":"13","gn:latitude":39.13144,"gn:asciiname":"Birch Island","lbl:bbox":"-90.70123,39.11144,-90.66123,39.15144","counts:concordances_total":2,"gn:country_code":"US","geom:type":"Point","wof:lastmodified":1613722658,"gn:admin1_code":"IL","wof:belongsto":[85688697,102191575,404497421,85633793,102087559],"wof:repo":"whosonfirst-data-admin-us","wof:country":"US","counts:names_preferred":0,"geom:area_square_m":0,"counts:names_variant":0,"wof:breaches":[],"edtf:inception":"uuuu","iso:country":"US","geom:bbox":"-90.68123,39.13144,-90.68123,39.13144","wof:superseded_by":[],"wof:geomhash":"ef10e7b986a2a07d4c21934ea64671ca","wof:placetype_id":102312317,"mz:is_ceased":0,"lbl:max_zoom":18,"wof:placetype":"locality","gn:longitude":-90.68123,"mz:is_deprecated":0,"gn:modification_date":"2010-02-15","geom:longitude":-90.68123,"wof:id":1310025587,"wof:concordances":{"gn:id":4233930,"wk:page":"Birch_Island%2C_Illinois"},"src:geom":"geonames","gn:geonameid":4233930,"wof:tags":[],"counts:names_languages":0,"wof:supersedes":[],"wof:parent_id":404497421,"wof:placetype_names":["locality"],"mz:hierarchy_label":1,"gn:timezone":"America/Chicago","edtf:cessation":"uuuu"}