Byers is a census-designated place (CDP) in Arapahoe County, Colorado, United States. The population was 1,160 at the 2010 census. The Byers Post Office has the ZIP Code 80103.
Byers is located at 39°42′38″N 104°13′18″W / 39.71056°N 104.22167°W / 39.71056; -104.22167 (39.710424, -104.221698).
According to the United States Census Bureau, the CDP has a total area of 4.3 square miles (11.1 km²), all of it land.