Armington is a village in Tazewell County, Illinois, United States. The population was 368 at the 2000 census. It is part of the Peoria, Illinois Metropolitan Statistical Area.
Armington is located at 40°20′21″N 89°18′49″W / 40.33917°N 89.31361°W / 40.33917; -89.31361 (40.339078, -89.313741).
According to the United States Census Bureau, the village has a total area of 0.3 square miles (0.8 km²), all of it land.