Americus is a city in Lyon County, Kansas, United States. The population was 938 at the 2000 census. It is part of the Emporia Micropolitan Statistical Area.
Americus is located at 38°30′23″N 96°15′35″W / 38.50639°N 96.25972°W / 38.50639; -96.25972 (38.506448, -96.259598).
According to the United States Census Bureau, the city has a total area of 1.1 square miles (2.8 km²), all of it land.