Jackson, TN is a marketarea and its consensus geometry is derived from whosonfirst.
{"mz:is_ceased":0,"geom:latitude":35.666075,"wof:controlled":["wof:parent_id","wof:hierarchy"],"wof:name":"Jackson, TN","counts:names_total":2,"wof:placetype":"marketarea","mz:is_current":1,"wof:hierarchy":[{"continent_id":102191575,"country_id":85633793,"empire_id":136253057,"marketarea_id":1360665275}],"mz:is_deprecated":0,"lbl:latitude":35.721516,"geom:area":0.817413,"geom:longitude":-88.565474,"wof:id":1360665275,"counts:concordances_total":2,"geom:type":"Polygon","wof:lastmodified":1583789541,"wof:belongsto":[102191575,85633793,136253057],"wof:concordances":{"digitalenvoy:metro_code":639,"nielsen:id":639},"mps:latitude":35.721516,"name:eng_x_variant":["Jackson"],"wof:repo":"whosonfirst-data-admin-us","src:geom":"whosonfirst","wof:country":"US","counts:names_preferred":1,"geom:area_square_m":8.211478157706641E9,"wof:tags":[],"counts:names_variant":1,"wof:breaches":[],"edtf:inception":"uuuu","iso:country":"US","counts:names_languages":1,"geom:bbox":"-89.206297,34.995436,-87.981585,36.222834","name:eng_x_preferred":["Jackson, TN"],"mps:longitude":-88.556269,"wof:superseded_by":[],"wof:supersedes":[],"lbl:longitude":-88.556269,"wof:geomhash":"f812539cf811c70bfcb92ef2f68852cb","wof:parent_id":85633793,"wof:placetype_names":["marketarea"],"mz:hierarchy_label":0,"wof:placetype_id":1360666019,"edtf:cessation":"uuuu"}