Is Aspen the Highest City in Colorado? No—It's Leadville

Leadville Holds the Title

Aspen (~7,900 ft / 2,408 m) is high, but Leadville in Lake County is the highest incorporated city in Colorado—and the U.S.—at 10,200 ft (3,109 m).

Other high-elevation Colorado towns: Alma (~10,360 ft, but statutory town), Blue River, Fairplay. Leadville’s altitude shapes its history (silver boom), climate (short summers, heavy snow), and athletics (training hub).