Eureka is a locality and its consensus geometry is derived from whosonfirst.
{"wof:statistical_gore":1,"mz:is_ceased":0,"geom:latitude":39.262723,"wof:coterminous":[404504251],"wof:name":"Eureka","counts:names_total":1,"wof:placetype":"locality","mz:is_current":1,"wof:hierarchy":[{"continent_id":102191575,"country_id":85633793,"county_id":102085275,"localadmin_id":404504251,"locality_id":1729465385,"region_id":85688555}],"mz:is_deprecated":0,"mz:min_zoom":30,"lbl:latitude":39.262561,"geom:area":0.009735,"geom:longitude":-97.986634,"wof:id":1729465385,"geom:type":"Polygon","wof:lastmodified":1613764569,"wof:belongsto":[102191575,85633793,102085275,404504251,85688555],"mps:latitude":39.262561,"wof:repo":"whosonfirst-data-admin-us","src:geom":"whosonfirst","wof:country":"US","counts:names_preferred":1,"geom:area_square_m":9.3198064103312E7,"wof:tags":[],"counts:names_variant":0,"wof:breaches":[],"edtf:inception":"uuuu","iso:country":"US","src:geom_via":"uscensus","counts:names_languages":1,"geom:bbox":"-98.043223,39.218757,-97.929061,39.306906","name:eng_x_preferred":["Eureka"],"mps:longitude":-97.986634,"src:lbl_centroid":"mapshaper","wof:superseded_by":[],"wof:supersedes":[],"lbl:longitude":-97.986634,"wof:geomhash":"6875a6e268fc62916a6b6670c9f9908b","wof:parent_id":404504251,"wof:placetype_names":["locality"],"mz:hierarchy_label":1,"wof:placetype_id":102312317,"edtf:cessation":"uuuu"}