what's the zip code for lyons co
Zip Code 80540 is located in the state of Colorado in the Denver metro area. Zip code 80540 is primarily located in Boulder County. Portions of 80540 are also located in Larimer County. The official US Postal Service name for 80540 is LYONS, Colorado. Portions of zip code 80540 are contained within or border the city limits of Allenspark, CO, Lyons, CO, . Zip code 80540 is within area code 720, area code 303 and area code 970.