52577 is a postalcode and its consensus geometry is derived from uszcta.
{"mz:is_ceased":0,"geom:latitude":41.271926,"wof:name":"52577","counts:names_total":0,"wof:placetype":"postalcode","mz:is_current":1,"wof:hierarchy":[{"continent_id":102191575,"country_id":85633793,"county_id":102086547,"postalcode_id":554727255,"region_id":85688713}],"mz:is_deprecated":0,"lbl:latitude":41.272983,"geom:area":0.04469,"geom:longitude":-92.660446,"wof:id":554727255,"counts:concordances_total":1,"geom:type":"Polygon","wof:lastmodified":1611185528,"wof:belongsto":[102191575,85633793,102086547,85688713],"wof:concordances":{"gp:id":"12780646"},"wof:repo":"whosonfirst-data-postalcode-us","src:geom":"uszcta","wof:country":"US","counts:names_preferred":0,"gp:parent_id":"12588333","geom:area_square_m":4.15328024073383E8,"wof:tags":[],"counts:names_variant":0,"wof:breaches":[],"edtf:inception":"uuuu","iso:country":"US","counts:names_languages":0,"geom:bbox":"-92.860877,41.161276,-92.467199,41.379107","wof:superseded_by":[],"wof:supersedes":[],"lbl:longitude":-92.661641,"wof:geomhash":"2f026adc0912dad55bc3227aaed56a67","wof:parent_id":102086547,"wof:placetype_names":["postalcode"],"mz:hierarchy_label":1,"wof:placetype_id":470996387,"edtf:cessation":"uuuu","mz:postal_locality":"Oskaloosa"}