Downieville-Lawson-Dumont is a census-designated place (CDP) comprising the unincorporated communities of Downieville, Lawson, and Dumont located in, and governed by, Clear Creek County, Colorado, United States. At the United States Census 2020, the population of the Downieville-Lawson-Dumont CDP was 527. The CDP is a part of the Denver-Aurora-Centennial, CO Metropolitan Statistical Area and the Front Range Urban Corridor. The Dumont post office ZIP code 80436 (post office boxes) serves the area.
The Lawson, Colorado, post office operated from June 29, 1877, until August 31, 1966. The Dumont, Colorado, post office opened on May 17, 1880, and now serves the area.
Downieville, Lawson, and Dumont are located adjacent to one another alongside Interstate 70 in Clear Creek Canyon.
Dumont, Colorado, is the easternmost of the three communities at coordinates and the lowest at elevation .
Downieville, Colorado, is located further west at coordinates and elevation .
Lawson, Colorado, is located another further west at coordinates and elevation .
At the 2020 United States Census, the Downieville-Lawson-Dumont CDP had an area of , including of water.
The United States Census Bureau initially defined the for the