29154 is a postalcode and its consensus geometry is derived from uszcta.
{"mz:is_ceased":0,"geom:latitude":33.879657,"wof:name":"29154","counts:names_total":0,"wof:placetype":"postalcode","mz:is_current":1,"wof:hierarchy":[{"continent_id":102191575,"country_id":85633793,"county_id":102085745,"postalcode_id":554712035,"region_id":85688683}],"mz:is_deprecated":0,"lbl:latitude":33.879261,"geom:area":0.020283,"geom:longitude":-80.440102,"wof:id":554712035,"counts:concordances_total":1,"geom:type":"Polygon","wof:lastmodified":1611183729,"wof:belongsto":[102191575,85633793,102085745,85688683],"wof:concordances":{"gp:id":"12770045"},"wof:repo":"whosonfirst-data-postalcode-us","src:geom":"uszcta","wof:country":"US","counts:names_preferred":0,"geom:area_square_m":2.08215849816298E8,"wof:tags":[],"counts:names_variant":0,"wof:breaches":[],"edtf:inception":"uuuu","iso:country":"US","counts:names_languages":0,"geom:bbox":"-80.601308,33.746864,-80.356997,33.995044","wof:superseded_by":[],"wof:supersedes":[],"lbl:longitude":-80.440418,"wof:geomhash":"622292b68b28c1dea148cf3deee188c1","wof:parent_id":102085745,"wof:placetype_names":["postalcode"],"mz:hierarchy_label":1,"wof:placetype_id":470996387,"edtf:cessation":"uuuu","mz:postal_locality":"Sumter"}