title: Find all localities/regions of a city
body: <p>I have tried to find a lot over the Internet but I am unable to get a perfect utility/API for my requirement.</p>
  
  <p>I am looking for a utility that, given a city name, provides all the localities/regions of that city. (Would be great if alongwith the regions, the pincodes of every area/region could also be provided).</p>
  
  <p>P.S - I have been wondering if Google Maps, open-street maps provide such data, as their maps are already very data exhaustive and they virtually have every data point in their system?</p>