title: What's the easiest way to do a one-time mass geocode? (580,000 addresses)
body: <p>I am working on a civics related project and I need to be able to display all the properties in the City of Philadelphia on a map, so I'll need to get the latitude &amp; longitude for all 580,000 properties. (Only once)</p>
  
  <p>Most APIs like Google/Yahoo have limits of 5,000 per day, and even BatchGeo has a similar limit.</p>
  
  <p>Is there a way I can do a one-time geocoding of all these addresses?</p>