geocoder

Geocoder.us is a public service providing free geocoding of addresses and intersections in the United States. Using the service you can find the latitude & longitude of any US address and much more. Geocoder.us offers four different ways to access our web services: an XML-RPC interface, a SOAP interface, a REST interface that returns an RDF/XML document, and a REST interface that returns a plain text comma separated values result. The methods and return values are equivalent across all three interfaces.