"388 Townsend San Fran" Would yield the same as above. Addresses are inherently dirty data and there aren't any decent/affordable/legal services that offer thi

"388 Townsend San Fran" Would yield the same as above. Addresses are inherently dirty data and there aren't any decent/affordable/legal services that offer this. You can use Google Maps Geocoder or Yahoo Placefinder but both have fairly strict quotas and are only intended (legally speaking) for use with their mapping products. USPS/FedEx/UPS are also restricted unless you're shipping with them. Edit - Yahoo is actually letting people pay very respectable rates for their PlaceFinder service now. This is great: http://developer.yahoo.com/boss/geo/ http://developer.yahoo.com/boss/geo/