78249 is a postalcode and its consensus geometry is derived from uszcta.
{"mz:is_ceased":0,"geom:latitude":29.567951,"wof:name":"78249","counts:names_total":0,"wof:placetype":"postalcode","mz:is_current":1,"wof:hierarchy":[{"continent_id":102191575,"country_id":85633793,"county_id":102082471,"locality_id":101724653,"postalcode_id":554746773,"region_id":85688753}],"mz:is_deprecated":0,"lbl:latitude":29.565234,"geom:area":0.003597,"geom:longitude":-98.613475,"wof:id":554746773,"counts:concordances_total":1,"geom:type":"Polygon","wof:lastmodified":1611184033,"wof:belongsto":[102191575,85633793,102082471,101724653,85688753],"wof:concordances":{"gp:id":"12792014"},"wof:repo":"whosonfirst-data-postalcode-us","src:geom":"uszcta","wof:country":"US","counts:names_preferred":0,"geom:area_square_m":3.8689654412318E7,"wof:tags":[],"counts:names_variant":0,"wof:breaches":[],"edtf:inception":"uuuu","iso:country":"US","counts:names_languages":0,"geom:bbox":"-98.670057,29.541472,-98.559993,29.599882","wof:superseded_by":[],"wof:supersedes":[],"lbl:longitude":-98.612196,"wof:geomhash":"c2392e966810f2953147146d537f4597","wof:parent_id":101724653,"wof:placetype_names":["postalcode"],"mz:hierarchy_label":1,"wof:placetype_id":470996387,"edtf:cessation":"uuuu","mz:postal_locality":"San Antonio"}