For the first time, the U.S. Bureau of Economic Analysis has released prototype gross domestic product (GDP) data at the county level. This preliminary data, which includes the years 2012 to 2015, provides a granular look at county-level productivity. Furthermore, standardizing this data by population – GDP per capita – makes it a useful metric for comparing counties over time and across the country. From 2012 to 2015, per capita GDP grew in 82 percent of counties. Of the 138 counties with a population of more than 500,000 (large counties), GDP per capita increased in all but five from 2012 to 2015, led by Palm Beach County, Florida (32.2 percent increase), Santa Clara County, California (28.6 percent) and Denton County, Texas (27.6 percent). Using data from the BEA and the U.S. Census, SSTI has prepared a spreadsheet showing GDP per capita at the county level from 2012 to 2015, as well as an interactive map highlighting this data.