Judge Wilmoth is a native of Elkins and graduated from Elkins High School in 1983. He has a 1988 bachelor’s degree in criminal justice from Marshall University and a 1991 law degree from West Virginia University College of Law.

He began his legal career in 1992 as an associate attorney at Jory & Smith L.C. In 1997, he started his own law firm, David H. Wilmoth LC, in Elkins.

He also served as the Randolph County fiduciary commissioner for ten years (2004-2015) and as the mental hygiene commissioner for Randolph County from 1996 to 2015 and Tucker County from 2010 to 2015. He worked as a discovery commissioner for the Randolph County circuit court and as a special commissioner for Barbour, Randolph and Upshur County circuit courts.

Governor Earl Ray Tomblin appointed him to the bench in the Twentieth Judicial Circuit (Randolph County) in February 2015. He won the election in 2016.

He is a member of the West Virginia Judicial Association.

He is a former member of the Randolph County Ambulance Authority Board, Randolph County Committee on Aging, Inc., and the Deputy Sheriff’s and Randolph County Correctional Officer Civil Service Commissions.

He and his wife, Kris, have one daughter.