Bangkok covers an area of , ranking 69th among the other 76 provinces of Thailand. Of this, about  form the built-up urban area. It is ranked 73rd in the world in terms of land area. The city's urban sprawl reaches into parts of the six other provinces it borders, namely, in clockwise order from northwest: Nonthaburi, Pathum Thani, Chachoengsao, Samut Prakan, Samut Sakhon, and Nakhon Pathom. With the exception of Chachoengsao, these provinces, together with Bangkok, form the greater Bangkok Metropolitan Region.