Census geocoder provides interactive & programmatic (REST) access to users interested in matching addresses to geographic locations and entities containing those addresses.
Geocoding is the process of taking an address and returning an actual or calculated latitude/longitude coordinate. Depending on the parts of the address that are provided, determines to what granularity it is possible to geocode.
The current Geocoding Services engine requires a structure address be provided. The resulting lat/long is calculated along an address range.