The Town of Frederick is a Statutory Town located in Weld County, Colorado, United States. The town population was 14,513 at the 2020 United States Census, a +67.22% increase since the 2010 United States Census. Frederick is a part of the Greeley, CO Metropolitan Statistical Area and the Front Range Urban Corridor.

Weld County is a county located in the U.S. state of Colorado. As of the 2020 census, the population was 328,981. The county seat is Greeley.