Some of the cities, towns, and places in Clark County are Alexandria, Athens, Clay, Des Moines, Folker, Grant, Jackson, Jefferson, Kahoka, Lincoln, Luray, Madison, Revere, St. Francisville, St. Patrick, Sweet Home, Union, Vernon, Washington, Waterloo, Wayland, Wyaconda
Clark County is a county located in the U.S. state of Missouri. As of the 2010 census, the county's population was 7,139. Its county seat is Kahoka. The county was organized December 16, 1836 and named for William Clark, leader of the Lewis and Clark Expedition and later Governor of Missouri Territory.Clark County is part of the Fort Madison–Keokuk, IA-IL-MO Micropolitan Statistical Area.