42603 is a postalcode and its consensus geometry is derived from uszcta.
{"mz:is_ceased":0,"geom:latitude":36.782419,"wof:name":"42603","counts:names_total":0,"wof:placetype":"postalcode","wof:hierarchy":[{"continent_id":102191575,"country_id":85633793,"county_id":102084513,"postalcode_id":554720099,"region_id":85688641}],"mz:is_deprecated":0,"lbl:latitude":36.782248,"geom:area":9.58E-4,"geom:longitude":-85.027525,"wof:id":554720099,"counts:concordances_total":1,"geom:type":"Polygon","wof:lastmodified":1480802068,"wof:belongsto":[102191575,85633793,85688641,102084513],"wof:concordances":{"gp:id":"12776020"},"wof:repo":"whosonfirst-data-postalcode-us","src:geom":"uszcta","wof:country":"US","counts:names_preferred":0,"gp:parent_id":"2347576","geom:area_square_m":9485927.777273,"wof:tags":[],"counts:names_variant":0,"wof:breaches":[],"edtf:inception":"uuuu","iso:country":"US","counts:names_languages":0,"geom:bbox":"-85.047395,36.760309,-85.007981,36.806688","wof:superseded_by":[],"wof:supersedes":[],"lbl:longitude":-85.029028,"wof:geomhash":"3f0f69288e1936ed470cda9855b74e14","wof:parent_id":102084513,"wof:placetype_names":["postalcode"],"mz:hierarchy_label":1,"wof:placetype_id":470996387,"edtf:cessation":"uuuu"}