55106 is a postalcode and its consensus geometry is derived from uszcta.
{"mz:is_ceased":0,"geom:latitude":44.963478,"wof:name":"55106","counts:names_total":0,"wof:placetype":"postalcode","mz:is_current":1,"wof:hierarchy":[{"continent_id":102191575,"country_id":85633793,"county_id":102087007,"localadmin_id":404514465,"locality_id":85953191,"postalcode_id":554729057,"region_id":85688727}],"mz:is_deprecated":0,"lbl:latitude":44.963547,"mz:postal_locality_alt":["Saint Paul","Mendota Heights"],"geom:area":0.002703,"geom:longitude":-93.048311,"wof:id":554729057,"counts:concordances_total":1,"geom:type":"Polygon","wof:lastmodified":1611185437,"wof:belongsto":[102191575,85633793,102087007,404514465,85953191,85688727],"wof:concordances":{"gp:id":"12781741"},"wof:repo":"whosonfirst-data-postalcode-us","src:geom":"uszcta","wof:country":"US","counts:names_preferred":0,"geom:area_square_m":2.3646444902445E7,"wof:tags":[],"counts:names_variant":0,"wof:breaches":[],"edtf:inception":"uuuu","iso:country":"US","counts:names_languages":0,"geom:bbox":"-93.080881,44.891047,-93.006943,44.995005","wof:superseded_by":[],"wof:supersedes":[],"lbl:longitude":-93.049522,"wof:geomhash":"292d663cb87fe729e524dcab4b37017f","wof:parent_id":85953191,"wof:placetype_names":["postalcode"],"mz:hierarchy_label":1,"wof:placetype_id":470996387,"edtf:cessation":"uuuu","mz:postal_locality":"St Paul"}