The Fourth District population is much more evenly distributed than the Third District is. Champaign County is 20.25%. Sangamon, home of the state capitol, is 19.89%. McLean County accounts for 17.99% and Macon County is 11.16%. Vermillion County accounts for 8.22%, Adams is 6.76% and Coles County is 5.43%. The remaining counties are substantially smaller.