Union is a locality and its consensus geometry is derived from whosonfirst.
{"wof:statistical_gore":1,"mz:is_ceased":0,"geom:latitude":42.131147,"wof:name":"Union","counts:names_total":1,"wof:placetype":"locality","mz:is_current":1,"wof:hierarchy":[{"continent_id":102191575,"country_id":85633793,"county_id":102081755,"localadmin_id":404521829,"locality_id":1729435411,"region_id":85688543}],"mz:is_deprecated":0,"mz:min_zoom":30,"lbl:latitude":42.127386,"geom:area":0.006876,"geom:longitude":-76.044112,"wof:id":1729435411,"geom:type":"Polygon","wof:lastmodified":1613765865,"wof:belongsto":[102191575,85633793,102081755,404521829,85688543],"mps:latitude":42.127386,"wof:repo":"whosonfirst-data-admin-us","src:geom":"whosonfirst","wof:country":"US","counts:names_preferred":1,"geom:area_square_m":6.3051131879553E7,"wof:tags":[],"counts:names_variant":0,"wof:breaches":[],"edtf:inception":"uuuu","iso:country":"US","src:geom_via":"uscensus","counts:names_languages":1,"geom:bbox":"-76.114033,42.071361,-75.935441,42.16047","name:eng_x_preferred":["Union"],"mps:longitude":-76.082601,"src:lbl_centroid":"mapshaper","wof:superseded_by":[],"wof:supersedes":[],"lbl:longitude":-76.082601,"wof:geomhash":"a4f974bca15a7256a4fc43eb50f2cc6d","wof:parent_id":404521829,"wof:placetype_names":["locality"],"mz:hierarchy_label":1,"wof:placetype_id":102312317,"edtf:cessation":"uuuu"}