20110 is a postalcode and its consensus geometry is derived from uszcta.
{"mz:is_ceased":0,"geom:latitude":38.74713,"wof:name":"20110","counts:names_total":0,"wof:placetype":"postalcode","mz:is_current":1,"wof:hierarchy":[{"continent_id":102191575,"country_id":85633793,"county_id":102081053,"locality_id":101728987,"postalcode_id":554706751,"region_id":85688747}],"mz:is_deprecated":0,"lbl:latitude":38.747172,"geom:area":0.003405,"geom:longitude":-77.485915,"wof:id":554706751,"counts:concordances_total":1,"geom:type":"Polygon","wof:lastmodified":1611182703,"wof:belongsto":[102191575,85633793,102081053,101728987,85688747],"wof:concordances":{"gp:id":"12765918"},"wof:repo":"whosonfirst-data-postalcode-us","src:geom":"uszcta","wof:country":"US","counts:names_preferred":0,"geom:area_square_m":3.284145099607E7,"wof:tags":[],"counts:names_variant":0,"wof:breaches":[],"edtf:inception":"uuuu","iso:country":"US","counts:names_languages":0,"geom:bbox":"-77.532958,38.705681,-77.44751,38.784311","wof:superseded_by":[],"wof:supersedes":[],"lbl:longitude":-77.484536,"wof:geomhash":"0acfb1f0512cf72ca78f17e7102021fc","wof:parent_id":101728987,"wof:placetype_names":["postalcode"],"mz:hierarchy_label":1,"wof:placetype_id":470996387,"edtf:cessation":"uuuu","mz:postal_locality":"Manassas"}