49009 is a postalcode and its consensus geometry is derived from uszcta.
{"mz:is_ceased":0,"geom:latitude":42.307629,"wof:name":"49009","counts:names_total":0,"wof:placetype":"postalcode","mz:is_current":1,"wof:hierarchy":[{"continent_id":102191575,"country_id":85633793,"county_id":102083671,"localadmin_id":404507693,"postalcode_id":554724715,"region_id":85688599}],"mz:is_deprecated":0,"lbl:latitude":42.303748,"mz:postal_locality_alt":["Oshtemo","Mattawan"],"geom:area":0.029421,"geom:longitude":-85.69404,"wof:id":554724715,"counts:concordances_total":1,"geom:type":"Polygon","wof:lastmodified":1611183755,"wof:belongsto":[102191575,85633793,102083671,404507693,85688599],"wof:concordances":{"gp:id":"12779120"},"wof:repo":"whosonfirst-data-postalcode-us","src:geom":"uszcta","wof:country":"US","counts:names_preferred":0,"geom:area_square_m":2.6904388250415E8,"wof:tags":[],"counts:names_variant":0,"wof:breaches":[],"edtf:inception":"uuuu","iso:country":"US","counts:names_languages":0,"geom:bbox":"-85.805451,42.179894,-85.573931,42.409031","wof:superseded_by":[],"wof:supersedes":[],"lbl:longitude":-85.697876,"wof:geomhash":"b80d21c8edac06b485e5efcda4982a05","wof:parent_id":404507693,"wof:placetype_names":["postalcode"],"mz:hierarchy_label":1,"wof:placetype_id":470996387,"edtf:cessation":"uuuu","mz:postal_locality":"Kalamazoo"}