http://www.datasciencetoolkit.org/ http://www.datasciencetoolkit.org/ may be worth a shot. Don't know how accurate the data is or how often it's updated, but w

http://www.datasciencetoolkit.org/ http://www.datasciencetoolkit.org/ may be worth a shot. Don't know how accurate the data is or how often it's updated, but we've used it before without any issues. I will note though that the geolocation functionality was a secondary piece in our software, so we weren't really concerned with accuracy of the data.