Boulder / Area code
Area code 720
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May 25, 2022 · 303. The 303 is a number synonymous with Denver and Colorado. It was established as Colorado's area code in 1947. This is the primary area ...
Area code 719 serves Colorado Springs and southeastern Colorado. Area code 970 ... Clickable map of Colorado area codes in blue (with bordering states).
Area code 303 is located in central Colorado and covers Denver, Aurora, Lakewood, Thornton, Arvada, Westminster, and Centennial. It has 2 overlays (720 and 983) ...
Colorado Area Code List · 303 area code · 719 area code · 720 area code · 970 area code · 983 area code.
7 days ago · Boulder, CO has 11 ZIP Codes ; 80301, Standard, 25,944 ; 80302, Standard, 27,322 ; 80303, Standard, 25,328 ; 80304, Standard, 27,532 ...
Boulder, Colorado observes Daylight Savings Time. Boulder zip codes: 80301, 80302, 80303, 80304 ...