51019 is a postalcode and its consensus geometry is derived from uszcta.
{"mz:is_ceased":0,"geom:latitude":42.270204,"wof:name":"51019","counts:names_total":0,"wof:placetype":"postalcode","mz:is_current":1,"wof:hierarchy":[{"continent_id":102191575,"country_id":85633793,"county_id":102086309,"postalcode_id":554726361,"region_id":85688713}],"mz:is_deprecated":0,"lbl:latitude":42.274026,"geom:area":0.025839,"geom:longitude":-95.728135,"wof:id":554726361,"counts:concordances_total":1,"geom:type":"Polygon","wof:lastmodified":1611184882,"wof:belongsto":[102191575,85633793,102086309,85688713],"wof:concordances":{"gp:id":"12780199"},"wof:repo":"whosonfirst-data-postalcode-us","src:geom":"uszcta","wof:country":"US","counts:names_preferred":0,"gp:parent_id":"12588368","geom:area_square_m":2.36428756539937E8,"wof:tags":[],"counts:names_variant":0,"wof:breaches":[],"edtf:inception":"uuuu","iso:country":"US","counts:names_languages":0,"geom:bbox":"-95.863862,42.161346,-95.594105,42.371131","wof:superseded_by":[],"wof:supersedes":[],"lbl:longitude":-95.738838,"wof:geomhash":"4953e346657a47fac5283df79d4f8a5d","wof:parent_id":102086309,"wof:placetype_names":["postalcode"],"mz:hierarchy_label":1,"wof:placetype_id":470996387,"edtf:cessation":"uuuu","mz:postal_locality":"Danbury"}