Jefferson County, Colorado
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Jefferson County is a county located in the U.S. state of Colorado. As of the 2020 census, the population was 582,910, making it the fourth-most populous county in Colorado. The county seat is Golden,
Jefferson County Courthouse in Golden, nicknamed "Colorado's Taj Mahal" for its dome architecture
Long Scraggy Peak in the southeastern part of the county.
Arapahoe County, Colorado
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Arapahoe County is a county located in the U.S. state of Colorado. As of the 2020 census, its population was 655,070, making it the third-most populous county in Colorado. The county seat is Littleton
Little Dry Creek in Englewood
The contemporary Arapahoe County Courthouse is in Dove Valley.