The U.S. Census Bureau says that the county has a total area of 404 square miles (1,050 km2). Of that, 385 square miles (1,000 km2) is land and 20 square miles (52 km2) (4.9%) is water.[4] It is the second-smallest county in Kansas by land area. It is the third-smallest by total area.
Geary County was a prohibition, or "dry", county until the Kansas Constitution was amended in 1986 and voters approved the sale of alcoholic liquor by the individual drink with a 30% food sales requirement. The food sales requirement was removed with voter approval in 1990.[10]
Located north of the junction of the Smoky Hill and Republican rivers, the Fort Riley Military Reservation covers 100,656 acres (407 km2) in Geary and Riley counties. The fort has a daytime population of nearly 25,000 and includes one census-designated place:
Fort Riley (formerly Fort Riley North), primarily in Riley County
Townships
Geary County is divided into eight townships. The city of Junction City is considered governmentally independent and is excluded from the census figures for the townships. In the following table, the population center is the largest city (or cities) included in that township's population total, if it is of a significant size.
↑"Map of Wet and Dry Counties". Alcoholic Beverage Control, Kansas Department of Revenue. November 2006. Archived from the original on October 8, 2007. Retrieved 2007-12-28.