The tiger geocoder is a suite of SQL functions packaged with PostGIS 2.0+ that utilize Topologically Integrated Geographic Encoding and Referencing (TIGER) U.S. Census data. The tiger geocoder not only makes it easy to batch geocode US data with SQL update statements but also provides geocoding functionality to applications via simple SQL statements. Although the tiger geocoder is specific to the TIGER U.S. data structure, its concepts are useful when creating your own custom geocoder for specialized data sets.
In this chapter you’ll learn how to standardize addresses for geocoding preparation using both built in functions and the PAGC address standardizer, load TIGER data, geocode data, and reverse geocode US data using PostGIS tiger geocoder.
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