48105 is a postalcode and its consensus geometry is derived from uszcta.
{"mz:is_ceased":0,"geom:latitude":42.331702,"wof:name":"48105","counts:names_total":0,"wof:placetype":"postalcode","mz:is_current":1,"wof:hierarchy":[{"continent_id":102191575,"country_id":85633793,"county_id":102083763,"localadmin_id":404508233,"postalcode_id":554723943,"region_id":85688599}],"mz:is_deprecated":0,"lbl:latitude":42.327634,"geom:area":0.014341,"geom:longitude":-83.707043,"wof:id":554723943,"counts:concordances_total":1,"geom:type":"Polygon","wof:lastmodified":1611183813,"wof:belongsto":[102191575,85633793,102083763,404508233,85688599],"wof:concordances":{"gp:id":"12778596"},"wof:repo":"whosonfirst-data-postalcode-us","src:geom":"uszcta","wof:country":"US","counts:names_preferred":0,"geom:area_square_m":1.31088064452496E8,"wof:tags":[],"counts:names_variant":0,"wof:breaches":[],"edtf:inception":"uuuu","iso:country":"US","counts:names_languages":0,"geom:bbox":"-83.818252,42.254036,-83.605304,42.395248","wof:superseded_by":[],"wof:supersedes":[],"lbl:longitude":-83.696444,"wof:geomhash":"b6ab74ac6af254d8f3a2a863e40cc80b","wof:parent_id":404508233,"wof:placetype_names":["postalcode"],"mz:hierarchy_label":1,"wof:placetype_id":470996387,"edtf:cessation":"uuuu","mz:postal_locality":"Ann Arbor"}