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is a Statutory Town in Eagle and Pitkin counties in the U.S. state of Colorado. The population was 2,681 at the 2000 census.
Basalt is located at (39.368382, -107.038263), along State Highway 82, and at the confluence of the Fryingpan and Roaring Fork Rivers.
According to the United States Census Bureau, the town has a total area of 1.9 square miles (5.0 km²), of which, 1.9 square miles (5.0 km²) of it is land and 0.04 square miles (0.1 km²) of it (1.03%) is water.