'Summit County, CO' definitions:

Summit -- U.S. County in Colorado

From: Gazetteer 2000
Name :
Summit -- U.S. County in Colorado
Population (2000) :
23548
Housing Units (2000) :
24201
Land area (2000) :
608.161860 sq. miles (1575.131920 sq. km)
Water area (2000) :
11.089165 sq. miles (28.720803 sq. km)
Total area (2000) :
619.251025 sq. miles (1603.852723 sq. km)
Located within :
Colorado (CO), FIPS 08
Location :
39.574638 N, 106.070643 W