Our address data comes directly from the U.S. Postal Service (USPS), including geocode data, Residential Delivery Indicator (RDI), time zone, Delivery Point Validation (DPV), vacancy data, congressional district, and more.
SmartyStreets is currently working on compiling our own index of latitude/longitude (geocoding) data from multiple sources, but it is not in production yet. Keep an eye out on our blog for announcements.
We receive monthly updates to our software from the USPS.
SmartyStreets is an official CASS-certified USPS vendor. The Coding Accuracy Support System (CASS) enables the USPS to evaluate the accuracy of software that corrects and matches street addresses. Once an address has been cleaned up, standardized, and verified as deliverable, you can be nearly 100% sure that it will be delivered as expected. (Of course things like meteorites, volcanoes, or a loose pack of rabid dogs can still cause delays to postal delivery. But at least you can say you did your best.)
SmartyStreets does not provide demographic data. However, we can provide a ZIP+9 for an address, which can then be used to find the demographic data for the area. Here is a list of organizations that offer demographic data by address: