39180 is a postalcode and its consensus geometry is derived from uszcta.
{"mz:is_ceased":0,"geom:latitude":32.230851,"wof:name":"39180","counts:names_total":0,"wof:placetype":"postalcode","mz:is_current":1,"wof:hierarchy":[{"continent_id":102191575,"country_id":85633793,"county_id":102083779,"postalcode_id":554718211,"region_id":85688579}],"mz:is_deprecated":0,"lbl:latitude":32.224042,"mz:postal_locality_alt":["Rolling Fork"],"geom:area":0.051914,"geom:longitude":-90.855861,"wof:id":554718211,"counts:concordances_total":1,"geom:type":"Polygon","wof:lastmodified":1611185542,"wof:belongsto":[102191575,85633793,102083779,85688579],"wof:concordances":{"gp:id":"12774839"},"wof:repo":"whosonfirst-data-postalcode-us","src:geom":"uszcta","wof:country":"US","counts:names_preferred":0,"geom:area_square_m":5.43004817803627E8,"wof:tags":[],"counts:names_variant":0,"wof:breaches":[],"edtf:inception":"uuuu","iso:country":"US","counts:names_languages":0,"geom:bbox":"-91.03064,32.078327,-90.695733,32.357525","wof:superseded_by":[],"wof:supersedes":[],"lbl:longitude":-90.857132,"wof:geomhash":"0d22048521ab74d3c0ebc565ee54fc4a","wof:parent_id":102083779,"wof:placetype_names":["postalcode"],"mz:hierarchy_label":1,"wof:placetype_id":470996387,"edtf:cessation":"uuuu","mz:postal_locality":"Vicksburg"}