18349 is a postalcode and its consensus geometry is derived from uszcta.
{"mz:is_ceased":0,"geom:latitude":41.102004,"wof:name":"18349","counts:names_total":0,"wof:placetype":"postalcode","wof:hierarchy":[{"continent_id":102191575,"country_id":85633793,"county_id":102080945,"localadmin_id":404488225,"postalcode_id":554767701,"region_id":85688481}],"mz:is_deprecated":0,"lbl:latitude":41.101253,"geom:area":3.9E-4,"geom:longitude":-75.368128,"wof:id":554767701,"counts:concordances_total":1,"geom:type":"Polygon","wof:lastmodified":1480906479,"wof:belongsto":[85688481,102191575,404488225,85633793,102080945],"wof:concordances":{"gp:id":"12765154"},"wof:repo":"whosonfirst-data-postalcode-us","src:geom":"uszcta","wof:country":"US","counts:names_preferred":0,"gp:parent_id":"12589772","geom:area_square_m":3629420.733096,"wof:tags":[],"counts:names_variant":0,"wof:breaches":[],"edtf:inception":"uuuu","iso:country":"US","counts:names_languages":0,"geom:bbox":"-75.384663,41.095084,-75.347053,41.111571","wof:superseded_by":[],"wof:supersedes":[],"lbl:longitude":-75.366514,"wof:geomhash":"c1a12ff0d9463b02bdd6d927b6c2fb7f","wof:parent_id":404488225,"wof:placetype_names":["postalcode"],"mz:hierarchy_label":1,"wof:placetype_id":470996387,"edtf:cessation":"uuuu"}