Stacy was elected as Drainage Commissioner of Brazoria Drainage District #4 in 2002 and re-elected in 2006. As Drainage Commissioner, he served as Chairman, Secretary, and was a charter member of the Chocolate Bayou Steering Committee.

In 2008, Stacy was elected to serve on Brazoria County Commissioners' Court as Commissioner representing Precinct 3, which covers the Pearland and Alvin area. He is currently serving in his fifth term. He aids as the Commissioners' Court liaison to the Brazoria County’s Library System, Information Systems, 288 Corridor Development Team and Board Member of the Gulf Coast Regional 911 Emergency Communication District.  He also represents Brazoria County on the Houston Galveston Area Council (HGAC) Board of Directors. Stacy serves as 2019 Past-Chair of the HGAC Board of Directors, and currently sits on the Legislative and Finance Committee as well as the Chair of the Corporation of Regional Excellence. 

Commissioner Adams is very active in both the Alvin and Pearland communities. His community activities include membership in Pearland Rotary Club, Board Member of the Pearland Neighborhood Center, Pearland Area Republican Club, Pearland Chamber of Commerce, Brazoria County Hispanic Chamber of Commerce, Northern Brazoria County Chamber of Commerce, and past-president of Lady Oiler Golf Booster Club.