Union is a locality and its consensus geometry is derived from whosonfirst.
{"wof:statistical_gore":1,"mz:is_ceased":0,"geom:latitude":38.010492,"wof:coterminous":[404516027],"wof:name":"Union","counts:names_total":1,"wof:placetype":"locality","mz:is_current":1,"wof:hierarchy":[{"continent_id":102191575,"country_id":85633793,"county_id":102087487,"localadmin_id":404516027,"locality_id":1729458173,"region_id":85688661}],"mz:is_deprecated":0,"mz:min_zoom":30,"lbl:latitude":38.01004,"geom:area":0.012605,"geom:longitude":-90.713536,"wof:id":1729458173,"geom:type":"Polygon","wof:lastmodified":1613765111,"wof:belongsto":[102191575,85633793,102087487,404516027,85688661],"mps:latitude":38.01004,"wof:repo":"whosonfirst-data-admin-us","src:geom":"whosonfirst","wof:country":"US","counts:names_preferred":1,"geom:area_square_m":1.22802831670226E8,"wof:tags":[],"counts:names_variant":0,"wof:breaches":[],"edtf:inception":"uuuu","iso:country":"US","src:geom_via":"uscensus","counts:names_languages":1,"geom:bbox":"-90.79526,37.964192,-90.640495,38.056557","name:eng_x_preferred":["Union"],"mps:longitude":-90.71354,"src:lbl_centroid":"mapshaper","wof:superseded_by":[],"wof:supersedes":[],"lbl:longitude":-90.71354,"wof:geomhash":"c761c44146b78a6d8dceae0affa33d1c","wof:parent_id":404516027,"wof:placetype_names":["locality"],"mz:hierarchy_label":1,"wof:placetype_id":102312317,"edtf:cessation":"uuuu"}