Married Jean M. Turner. They have four children: Sidney III, Richard, Lindsey and Jennifer. He is a farmer and serves as the Majority Caucus Chair.

Member: Baptist Church; Farm Bureau; Chamber of Commerce; Eagles; Alpha Gamma Rho; University of Missouri Alumni Association; Platte County Business and Professional Association; Association of Counties, board of directors, 1987-1990; Buchanan County presiding commissioner, 1983-1990; Missouri Commissioners Association, president, 1987; Buchanan County Farm Bureau; chair, Buchanan County Extension Club, Farm Bureau Young Farmers and Ranchers Committee. Elected to the Senate: 1990, 1994.