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

Members of the Board of Trustees:

• Amy Meadows, President
• Lucy S. Rhame, First Vice President & Treasurer
• Ellen MacNeille Charles, President Emerita
• Susan Bollendorf, Vice President
• Kathryn Vigé Hicks, Secretary
• Sophie Hawkins, Assistant Treasurer
• Nancy Appleby
• Amy Ballard
• Sally E. Chapoton
• Marcia DeWitt
• Joshua Hildreth
• George D. Iverson
• Betsy Scott Kleeblatt
• Jocelyn Linke
• Mark Lowham
• Alison Martin
• Sara O'Keefe
• Jeannette Petite
• W. Brett Rees
• Nedenia C. Rumbough
• Stanley H. Rumbough
• Beth Newburger Schwartz
• Janice Shrader
• Mary Emerson Slimp
• Douglas Reid Weimer, Esq.
• Gail Berry West

The executive director is responsible for the day to day operations of the estate; a staff  of more than 50 employees and 400 active volunteers assists the executive director in all aspects of the operations, including:

• Administration
• Curatorial and Collections
• External Affairs
• Finance and Security Services
• Horticulture
• Human Resources
• Interpretation
• Operations and Technology

The museum is accredited by the American Association of Museums.