Colorado.

est. 1964 · 2,628 acres · Douglas County, CO (near Franktown, south of Castle Rock)

est. 1959 · 4,000 acres · Aurora, Arapahoe County, Colorado, in the Denver metropolitan area.

est. 1978 · 1,488 acres · Boulder County, CO (Eldorado Springs)

est. 1991 · 5,121 acres · Teller County, CO ~25 miles west of Colorado Springs near Divide, on the western flank of Pikes Peak

est. 1975 · 3,339 acres · Douglas County, CO (south of Littleton)