Ellington is a city in Reynolds County, Missouri, United States. The population was 1,045 at the 2000 census. In 1925, the infamous Tri-State Tornado began just northwest of Ellington.
Ellington is located at 37°14′21″N 90°58′11″W / 37.23917°N 90.96972°W / 37.23917; -90.96972 (37.239103, -90.969669).
According to the United States Census Bureau, the city has a total area of 1.4 square miles (3.7 km²), all of it land.