40242 is a postalcode and its consensus geometry is derived from uszcta.
{"mz:is_ceased":0,"geom:latitude":38.277372,"wof:name":"40242","counts:names_total":0,"wof:placetype":"postalcode","mz:is_current":1,"wof:hierarchy":[{"continent_id":102191575,"country_id":85633793,"county_id":102084449,"locality_id":85947523,"postalcode_id":554718811,"region_id":85688641}],"mz:is_deprecated":0,"lbl:latitude":38.277471,"geom:area":7.14E-4,"geom:longitude":-85.59068,"wof:id":554718811,"counts:concordances_total":1,"geom:type":"MultiPolygon","wof:lastmodified":1611185543,"wof:belongsto":[102191575,85633793,102084449,85947523,85688641],"wof:concordances":{"gp:id":"12775194"},"wof:repo":"whosonfirst-data-postalcode-us","src:geom":"uszcta","wof:country":"US","counts:names_preferred":0,"gp:parent_id":"2442327","geom:area_square_m":6934498.451704,"wof:tags":[],"counts:names_variant":0,"wof:breaches":[],"edtf:inception":"uuuu","iso:country":"US","counts:names_languages":0,"geom:bbox":"-85.62129,38.255911,-85.566165,38.300434","wof:superseded_by":[],"wof:supersedes":[],"lbl:longitude":-85.590514,"wof:geomhash":"71b1446eeeabd5421f450722f202cf4a","wof:parent_id":85947523,"wof:placetype_names":["postalcode"],"mz:hierarchy_label":1,"wof:placetype_id":470996387,"edtf:cessation":"uuuu","mz:postal_locality":"Louisville"}