68061 is a postalcode and its consensus geometry is derived from uszcta.
{"mz:is_ceased":0,"geom:latitude":41.799448,"wof:name":"68061","counts:names_total":0,"wof:placetype":"postalcode","mz:is_current":1,"wof:hierarchy":[{"continent_id":102191575,"country_id":85633793,"county_id":102082195,"localadmin_id":404518569,"postalcode_id":554739469,"region_id":85688563}],"mz:is_deprecated":0,"lbl:latitude":41.793191,"geom:area":0.042978,"geom:longitude":-96.211542,"wof:id":554739469,"counts:concordances_total":1,"geom:type":"Polygon","wof:lastmodified":1611182674,"wof:belongsto":[102191575,85633793,102082195,404518569,85688563],"wof:concordances":{"gp:id":"12787511"},"wof:repo":"whosonfirst-data-postalcode-us","src:geom":"uszcta","wof:country":"US","counts:names_preferred":0,"gp:parent_id":"12589148","geom:area_square_m":3.96176732163961E8,"wof:tags":[],"counts:names_variant":0,"wof:breaches":[],"edtf:inception":"uuuu","iso:country":"US","counts:names_languages":0,"geom:bbox":"-96.347649,41.68273,-96.064757,41.916729","wof:superseded_by":[],"wof:supersedes":[],"lbl:longitude":-96.207831,"wof:geomhash":"1b17e059adb03a2800d2bffb38b2b139","wof:parent_id":404518569,"wof:placetype_names":["postalcode"],"mz:hierarchy_label":1,"wof:placetype_id":470996387,"edtf:cessation":"uuuu","mz:postal_locality":"Tekamah"}