48381 is a postalcode and its consensus geometry is derived from uszcta.
{"mz:is_ceased":0,"geom:latitude":42.561664,"wof:name":"48381","counts:names_total":0,"wof:placetype":"postalcode","mz:is_current":1,"wof:hierarchy":[{"continent_id":102191575,"country_id":85633793,"county_id":102083713,"localadmin_id":404506347,"postalcode_id":554724219,"region_id":85688599}],"mz:is_deprecated":0,"lbl:latitude":42.558412,"geom:area":0.005903,"geom:longitude":-83.594199,"wof:id":554724219,"counts:concordances_total":1,"geom:type":"Polygon","wof:lastmodified":1611183747,"wof:belongsto":[102191575,85633793,102083713,404506347,85688599],"wof:concordances":{"gp:id":"12778795"},"wof:repo":"whosonfirst-data-postalcode-us","src:geom":"uszcta","wof:country":"US","counts:names_preferred":0,"geom:area_square_m":5.3765798997407E7,"wof:tags":[],"counts:names_variant":0,"wof:breaches":[],"edtf:inception":"uuuu","iso:country":"US","counts:names_languages":0,"geom:bbox":"-83.654523,42.509351,-83.553275,42.610741","wof:superseded_by":[],"wof:supersedes":[],"lbl:longitude":-83.591793,"wof:geomhash":"5d176116a86da3d019296c30e9a3c484","wof:parent_id":404506347,"wof:placetype_names":["postalcode"],"mz:hierarchy_label":1,"wof:placetype_id":470996387,"edtf:cessation":"uuuu","mz:postal_locality":"Milford"}