49345 is a postalcode and its consensus geometry is derived from uszcta.
{"mz:is_ceased":0,"geom:latitude":43.154003,"wof:name":"49345","counts:names_total":0,"wof:placetype":"postalcode","mz:is_current":1,"wof:hierarchy":[{"continent_id":102191575,"country_id":85633793,"county_id":102083023,"localadmin_id":404506111,"locality_id":85951363,"postalcode_id":554725055,"region_id":85688599}],"mz:is_deprecated":0,"lbl:latitude":43.15534,"geom:area":0.015424,"geom:longitude":-85.703721,"wof:id":554725055,"counts:concordances_total":1,"geom:type":"Polygon","wof:lastmodified":1611183264,"wof:belongsto":[102191575,85633793,102083023,404506111,85951363,85688599],"wof:concordances":{"gp:id":"12779328"},"wof:repo":"whosonfirst-data-postalcode-us","src:geom":"uszcta","wof:country":"US","counts:names_preferred":0,"gp:parent_id":"12588754","geom:area_square_m":1.39133775315853E8,"wof:tags":[],"counts:names_variant":0,"wof:breaches":[],"edtf:inception":"uuuu","iso:country":"US","counts:names_languages":0,"geom:bbox":"-85.790222,43.088733,-85.591204,43.21966","wof:superseded_by":[],"wof:supersedes":[],"lbl:longitude":-85.703948,"wof:geomhash":"8b0c882373f51de338d976463d8b8f3c","wof:parent_id":85951363,"wof:placetype_names":["postalcode"],"mz:hierarchy_label":1,"wof:placetype_id":470996387,"edtf:cessation":"uuuu","mz:postal_locality":"Sparta"}