He was a member of Offaly County Council for the Tullamore local electoral area from 2017 to 2024. Formerly president of the Tullamore Chamber of Commerce, McCormack had been a member of Tullamore Town Council before its abolition in 2014, and was co-opted to the county council in 2017 to fill a casual vacancy. He retained his seat at the 2019 and 2024 elections.[4]