72638 is a postalcode and its consensus geometry is derived from uszcta.
{"mz:is_ceased":0,"geom:latitude":36.319902,"wof:name":"72638","counts:names_total":0,"wof:placetype":"postalcode","mz:is_current":1,"wof:hierarchy":[{"continent_id":102191575,"country_id":85633793,"county_id":102082047,"postalcode_id":554742509,"region_id":85688549}],"mz:is_deprecated":0,"lbl:latitude":36.322765,"geom:area":0.048854,"geom:longitude":-93.407407,"wof:id":554742509,"counts:concordances_total":1,"geom:type":"Polygon","wof:lastmodified":1611185235,"wof:belongsto":[102191575,85633793,102082047,85688549],"wof:concordances":{"gp:id":"12789363"},"wof:repo":"whosonfirst-data-postalcode-us","src:geom":"uszcta","wof:country":"US","counts:names_preferred":0,"gp:parent_id":"2347562","geom:area_square_m":4.86725208507148E8,"wof:tags":[],"counts:names_variant":0,"wof:breaches":[],"edtf:inception":"uuuu","iso:country":"US","counts:names_languages":0,"geom:bbox":"-93.543838,36.075833,-93.295688,36.485398","wof:superseded_by":[],"wof:supersedes":[],"lbl:longitude":-93.404544,"wof:geomhash":"5b5104d8dd553b6ecbdc6cc5b28abf68","wof:parent_id":102082047,"wof:placetype_names":["postalcode"],"mz:hierarchy_label":1,"wof:placetype_id":470996387,"edtf:cessation":"uuuu","mz:postal_locality":"Green Forest"}