From Ancestry.com Wiki
Whitingham is a town in Windham county, Vermont. It was formed in 1770 in N.Y. The probate district for Whitingham is Marlboro, while the court district is Windham. For more information, contact the town at 2948 VT Rt. 100, P.O. Box 529, Whitingham 05361. On the attached map, Whitingham is shown as 20 in Windham county.
For information about the state of Vermont see Vermont Family History Research.