Wellington is a city in Collingsworth County, Texas, United States. The population was 2,275 at the 2000 census. It is the county seat of Collingsworth County.
Wellington is located at 34°51′17″N 100°12′49″W / 34.85472°N 100.21361°W / 34.85472; -100.21361 (34.854616, -100.213626).
According to the United States Census Bureau, the city has a total area of 1.4 square miles (3.5 km²), all of it land.