Bureau of Economic Analysis
The Bureau of Economic Analysis (BEA) is a U.S. government agency that provides official macroeconomic and industry statistics including the gross domestic product of the United States.
BEA is part of the United States Department of Commerce and is one of the principal agencies of the U.S. Federal Statistical System. Its stated mission is to "promote a better understanding of the U.S. economy by providing the most timely, relevant, and accurate economic data in an objective and cost-effective manner".