Hillwood is governed by a Board of Trustees, some of whom are members of the Post family. 

Members of the Board of Trustees:

• Marcia DeWitt, President
• Amy Meadows, First Vice President
• Calvin Baker, Vice President
• Lucy Rhame, Treasurer
• Jocelyn Linke, Assistant Treasurer
• Kathryn Vige Hicks, Secretary
• Ellen MacNeille Charles, President Emerita
• Amy Ballard
• Barbara Boggs
• Susan Bollendorf
• Sally Chapoton
• Henry A. Dudley, Jr.
• Sophie Hawkins
• Josh Hildreth
• Andrew Iverson
• Betsy Scott Kleeblatt
• Mark Lowham
• Alison Martin
• Joan Mulcahy
• Jeannette Petite
• Judy Phares
• Brett Rees
• Priscilla R. Roosevelt
• Nedenia C. Rumbough
• Stanley H. Rumbough
• Beth Newburger Schwartz
• Janice Shrader
• Douglas Weimer
• Gail Berry West

The executive director is responsible for the day to day operations of the estate; a staff  of more than 90 employees and 400 active volunteers assists the executive director in all aspects of the operations, including:

• Administration
• Collections
• Curatorial
• Development
• Finance and Security Services
• Horticulture
• Human Resources
• Interpretation
• Marketing and Visitor Experience
• Operations and Technology

The museum is accredited by the American Association of Museums.