36560 is a postalcode and its consensus geometry is derived from uszcta.
{"mz:is_ceased":0,"geom:latitude":31.096367,"wof:name":"36560","counts:names_total":0,"wof:placetype":"postalcode","mz:is_current":1,"wof:hierarchy":[{"continent_id":102191575,"country_id":85633793,"county_id":102085585,"postalcode_id":554716177,"region_id":85688675}],"mz:is_deprecated":0,"lbl:latitude":31.097767,"mz:postal_locality_alt":["Mt Vernon"],"geom:area":0.017707,"geom:longitude":-88.040018,"wof:id":554716177,"counts:concordances_total":1,"geom:type":"Polygon","wof:lastmodified":1611185399,"wof:belongsto":[102191575,85633793,102085585,85688675],"wof:concordances":{"gp:id":"12773578"},"wof:repo":"whosonfirst-data-postalcode-us","src:geom":"uszcta","wof:country":"US","counts:names_preferred":0,"gp:parent_id":"12587535","geom:area_square_m":1.87485483408191E8,"wof:tags":[],"counts:names_variant":0,"wof:breaches":[],"edtf:inception":"uuuu","iso:country":"US","counts:names_languages":0,"geom:bbox":"-88.150697,31.006285,-87.939675,31.173306","wof:superseded_by":[],"wof:supersedes":[],"lbl:longitude":-88.040068,"wof:geomhash":"da800a203e128230dbb55d584a344656","wof:parent_id":102085585,"wof:placetype_names":["postalcode"],"mz:hierarchy_label":1,"wof:placetype_id":470996387,"edtf:cessation":"uuuu","mz:postal_locality":"Mount Vernon"}