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Keystone, Colorado
Keystone in January 2011.
Keystone in January 2011.
Location of the Keystone CDP in Summit County, Colorado.Colorado
Location of the Keystone CDP in Summit County, Colorado.Colorado
Keystone, Colorado is located in the United States
Keystone, Colorado
Keystone, Colorado
Location in the United States
Country  United States
State  Colorado
County Summit County
 • Type unincorporated community
 • Total 41.435 sq mi (107.316 km2)
 • Land 41.402 sq mi (107.230 km2)
 • Water 0.033 sq mi (0.086 km2)
10,804 ft (3,293 m)
 • Total 1,079
 • Density 26/sq mi (10/km2)
Time zone UTC-7 (MST)
 • Summer (DST) UTC-6 (MDT)
ZIP Code
Area code(s) 970
GNIS feature Keystone CDP

Keystone is an unincorporated community and a census-designated place (CDP) located in and governed by Summit County, Colorado, United States. The CDP is a part of the Breckenridge, CO Micropolitan Statistical Area. The population of the Keystone CDP was 1,079 at the United States Census 2010. The Dillon post office (Zip Code 80435) serves Keystone postal addresses. The Keystone CDP includes the Keystone Resort and Keystone village.


Keystone is located at 39°36′15″N 105°56′53″W / 39.604233°N 105.948111°W / 39.604233; -105.948111.

According to the United States Census Bureau, the CDP has a total area of 40.6 square miles (105 km2), of which, 40.6 square miles (105 km2) of it is land and 0.02% is water.


The United States Census Bureau initially defined the Keystone CDP for the United States Census 2000.

Keystone CDP, Colorado
Year Pop. ±%
2000 825 —    
2010 1,079 +30.8%
2020 —    
Source: United States Census Bureau

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