Walnut Grove is a locality and its consensus geometry is derived from whosonfirst.
{"wof:statistical_gore":1,"mz:is_ceased":0,"geom:latitude":42.502363,"wof:coterminous":[404519933],"wof:name":"Walnut Grove","counts:names_total":1,"wof:placetype":"locality","mz:is_current":1,"wof:hierarchy":[{"continent_id":102191575,"country_id":85633793,"county_id":102083471,"localadmin_id":404519933,"locality_id":1729468077,"region_id":85688563}],"mz:is_deprecated":0,"mz:min_zoom":30,"lbl:latitude":42.5022,"geom:area":0.015141,"geom:longitude":-98.247349,"wof:id":1729468077,"geom:type":"Polygon","wof:lastmodified":1613764634,"wof:belongsto":[102191575,85633793,102083471,404519933,85688563],"mps:latitude":42.5022,"wof:repo":"whosonfirst-data-admin-us","src:geom":"whosonfirst","wof:country":"US","counts:names_preferred":1,"geom:area_square_m":1.38029924596683E8,"wof:tags":[],"counts:names_variant":0,"wof:breaches":[],"edtf:inception":"uuuu","iso:country":"US","src:geom_via":"uscensus","counts:names_languages":1,"geom:bbox":"-98.305492,42.436898,-98.188486,42.567809","name:eng_x_preferred":["Walnut Grove"],"mps:longitude":-98.247343,"src:lbl_centroid":"mapshaper","wof:superseded_by":[],"wof:supersedes":[],"lbl:longitude":-98.247343,"wof:geomhash":"29c217fd7ff1f1bd0cbeb99542eee5ad","wof:parent_id":404519933,"wof:placetype_names":["locality"],"mz:hierarchy_label":1,"wof:placetype_id":102312317,"edtf:cessation":"uuuu"}