But that contradicts the &quot;most people live in big cities&quot;; it is &quot;most people live in cities&quot;, but of them most of them live in <i>smaller</i> cities.<p>And it only deals with the urban&#x2F;rural distinction, which subsumes suburbia into &quot;urban&quot;. This has value for lots of uses, but isn&#x27;t particularly useful for discussing transit, where suburbia is -- while still very distinct from rural areas -- very different from narrow-sense urban.