Find Nearest Cities in US based on Zip code
<blockquote>
  <p><strong>Possible Duplicate:</strong><br>
  <a href="http://stackoverflow.com/questions/6922195/nearest-zip-code-search-using-asp-net">Nearest Zip Code Search using asp.net</a>  </p>
</blockquote>



<p>I need to find nearest cities on the base of Zip code and radius in US. Can any one give me idea or database, API related to this?</p>
