37934 is a postalcode and its consensus geometry is derived from uszcta.
{"mz:is_ceased":0,"geom:latitude":35.872887,"wof:name":"37934","counts:names_total":0,"wof:placetype":"postalcode","mz:is_current":1,"wof:hierarchy":[{"continent_id":102191575,"country_id":85633793,"county_id":102086455,"locality_id":101722867,"postalcode_id":554756829,"region_id":85688701}],"mz:is_deprecated":0,"lbl:latitude":35.86134,"geom:area":0.004592,"geom:longitude":-84.179129,"wof:id":554756829,"counts:concordances_total":1,"geom:type":"Polygon","wof:lastmodified":1611184274,"wof:belongsto":[102191575,85633793,102086455,101722867,85688701],"wof:concordances":{"gp:id":"26814647"},"wof:repo":"whosonfirst-data-postalcode-us","src:geom":"uszcta","wof:country":"US","counts:names_preferred":0,"geom:area_square_m":4.6006795985855E7,"wof:tags":[],"counts:names_variant":0,"wof:breaches":[],"edtf:inception":"uuuu","iso:country":"US","counts:names_languages":0,"geom:bbox":"-84.240753,35.834689,-84.119855,35.906238","wof:superseded_by":[],"wof:supersedes":[],"lbl:longitude":-84.167768,"wof:geomhash":"6195a12c277b01f6b2dc9a5dba3a75b6","wof:parent_id":101722867,"wof:placetype_names":["postalcode"],"mz:hierarchy_label":1,"wof:placetype_id":470996387,"edtf:cessation":"uuuu","mz:postal_locality":"Knoxville"}