High Quality Content by WIKIPEDIA articles! The historic town of Georgetown is a Territorial Charter Municipality that is the county seat of Clear Creek County, Colorado, United States. The former silver mining camp along Clear Creek in the Front Range of the Rocky Mountains was established in 1859 during the Pike`s Peak Gold Rush. The federally designated Georgetown-Silver Plume National Historic District comprises Georgetown, the neighboring Town of Silver Plume, and the Georgetown Loop Historic Mining Railroad Park between the two towns. The town population was 1,088 at the U.S. Census 2000. The Georgetown Post Office has the ZIP Code 80444.