GeoCoder

Returns geographic, census, and demographic data for almost any location in the United States. Uses multisource data to return latitude and longitude down to rooftop accuracy of over 95% of all physical addresses in the United States. GeoCoder is part of Melissa Data's WebSmart Web Service.
Current Build Released February 2012 Build History Notices Known Issues
Basics Web Service Best Practices IP Address Information GeoCoder URLs FAQ Web Services Related Service Sample Try the service	Documentation GeoCoder Reference Guide Result Codes Returned Result Codes Sample XML XML Request XML Response Sample Code REST JavaScript REST VB.Net 71 SOAP ASP.Net 8(C#) SOAP CSharp9 SOAP Java SOAP PHP SOAP VB.Net 71 XML CSharp9 XML JavaScript XML VB.Net71