This working paper documents an updated estimate of the federal funds distributed each year in whole or in part using U.S. Census Bureau data. This paper finds that 132 programs used Census Bureau data to distribute more than $675 billion in funds during the fiscal year 2015. In 2009, the Census Bureau issued a working paper that found more than $400 billion of federal funds were distributed using Census Bureau data (Blumerman, 2009). This estimate was frequently used to illustrate the value of accurate Census Bureau data to the public, as part of the effort to encourage timely survey and census responses. However, the “more than $400 billion” estimate was based on the fiscal year 2007 funding. As the Census Bureau actively prepares for the 2020 Census, an updated estimate becomes increasingly important.