Waltham is a locality and its consensus geometry is derived from whosonfirst.
{"wof:statistical_gore":1,"mz:is_ceased":0,"geom:latitude":44.685726,"wof:coterminous":[404475557],"wof:name":"Waltham","counts:names_total":1,"wof:placetype":"locality","mz:is_current":1,"wof:hierarchy":[{"continent_id":102191575,"country_id":85633793,"county_id":102081201,"localadmin_id":404475557,"locality_id":1729477673,"region_id":85688769}],"mz:is_deprecated":0,"mz:min_zoom":30,"lbl:latitude":44.684342,"geom:area":0.009669,"geom:longitude":-68.33715,"wof:id":1729477673,"geom:type":"Polygon","wof:lastmodified":1613764907,"wof:belongsto":[102191575,85633793,102081201,404475557,85688769],"mps:latitude":44.684342,"wof:repo":"whosonfirst-data-admin-us","src:geom":"whosonfirst","wof:country":"US","counts:names_preferred":1,"geom:area_square_m":8.5005562519932E7,"wof:tags":[],"counts:names_variant":0,"wof:breaches":[],"edtf:inception":"uuuu","iso:country":"US","src:geom_via":"uscensus","counts:names_languages":1,"geom:bbox":"-68.400773,44.624888,-68.281226,44.759939","name:eng_x_preferred":["Waltham"],"mps:longitude":-68.332325,"src:lbl_centroid":"mapshaper","wof:superseded_by":[],"wof:supersedes":[],"lbl:longitude":-68.332325,"wof:geomhash":"6f38cb08093e045a69daad811a1b2828","wof:parent_id":404475557,"wof:placetype_names":["locality"],"mz:hierarchy_label":1,"wof:placetype_id":102312317,"edtf:cessation":"uuuu"}