• "There are more than 750 community foundations in the United States, with at least one in every state."
• According to the Foundation Center, "in 2012 community foundations received an estimated $7.5 billion in gifts, gave $5 billion in grants, and held total assets of $65 billion."

The Top 15 Foundations (by Total Assets)

•  Bill & Melinda Gates Foundation
•  Ford Foundation  
•  J. Paul Getty Trust
•  Lilly Endowment Inc.
• The Robert Wood Johnson Foundation
• The William and Flora Hewlett Foundation
•  W. K. Kellogg Foundation  
• Foundation to Promote Open Society
•  Bloomberg Philanthropies  

• The David and Lucile Packard Foundation
•  Gordon and Betty Moore Foundation
• The John D. and Catherine T. MacArthur Foundation
• The Andrew W. Mellon Foundation
• The Leona M. and Harry B. Helmsley Charitable Trust
•  The Rockefeller Foundation 

The Top 10 Largest Community Foundations (by Total Assets)

•  Silicon Valley Community Foundation
•  Tulsa Community Foundation
•  The New York Community Trust
•  Greater Kansas City Community Foundation
• The Chicago Community Trust  
•  The Cleveland Foundation
•  Foundation For The Carolinas  
• The Columbus Foundation and Affiliated Organizations
• The Oregon Community Foundation  
•  Marin Community Foundation  

Summary

• For the initial hour, we tried identifying as much of the requested information as possible. We were mainly able to identify the top 15 largest foundations, as well as the top 10 largest community foundations in the US by total assets in order to provide a total of 25 foundations.
• The information is based on 2015 data, which was the latest available information from the Foundation Center (now Candid), which has the most comprehensive data available on grantmakers.
• The initial research also suggests that insights on the yearly marketing spend or their spend on digital marketing/channels for each foundation does not appear to be immediately available. However, we can continue to research this further if this is of interest.
• In the course of our research, we also came across more general statistics on nonprofit marketing, which might also be of interest as an alternate research path.
• Feel free to add or select a proposal below.