31027 is a postalcode and its consensus geometry is derived from uszcta.
{"mz:is_ceased":0,"geom:latitude":32.577192,"wof:name":"31027","counts:names_total":0,"wof:placetype":"postalcode","mz:is_current":1,"wof:hierarchy":[{"continent_id":102191575,"country_id":85633793,"county_id":102083597,"postalcode_id":554713593,"region_id":85688535}],"mz:is_deprecated":0,"lbl:latitude":32.581117,"mz:postal_locality_alt":["East Dublin","Milledgeville","Warner Robins","Eatonton","Robins Afb","Adrian"],"geom:area":0.044821,"geom:longitude":-82.811366,"wof:id":554713593,"counts:concordances_total":1,"geom:type":"Polygon","wof:lastmodified":1611183292,"wof:belongsto":[102191575,85633793,102083597,85688535],"wof:concordances":{"gp:id":"12771075"},"wof:repo":"whosonfirst-data-postalcode-us","src:geom":"uszcta","wof:country":"US","counts:names_preferred":0,"gp:parent_id":"12587956","geom:area_square_m":4.67018209790477E8,"wof:tags":[],"counts:names_variant":0,"wof:breaches":[],"edtf:inception":"uuuu","iso:country":"US","counts:names_languages":0,"geom:bbox":"-82.957066,32.403751,-82.668557,32.71576","wof:superseded_by":[],"wof:supersedes":[],"lbl:longitude":-82.804219,"wof:geomhash":"91ab67d4dc0c3bc6c1edd337464d9a9f","wof:parent_id":102083597,"wof:placetype_names":["postalcode"],"mz:hierarchy_label":1,"wof:placetype_id":470996387,"edtf:cessation":"uuuu","mz:postal_locality":"Dublin"}