After leaving private practice, Lynch was exclusively employed working for railroad interests, including the Connotton Valley Railroad and the Pittsburgh, Akron &amp; Western Railroad. He also was among the owners of the Canton and Massilon Electric Railway, an intercity line. After McKinley's assassination in 1901, Lynch was one of the founders of the McKinley National Memorial Association, which was responsible for the construction of the McKinley National Memorial. From 1903 to 1906, he served as a city councilman in Canton. He practiced law up to his final day, February 6, 1907, when he died in the middle of a trial in Lisbon, Ohio.