303 Area Code

About Area Code 303

Area Code: 303
City: Arvada
State: Colorado
County: Adams
Time Zone: America/Denver
Latitude / Longitude: 39.77755625, -105.00266666667

Area code 303 is located in the United States and is used in the region around Arvada, Colorado. It currently serves approximately 24 cities across 1 states.

In this dataset, area code 303 covers parts of Colorado. Major cities using this area code include Arvada, Aurora, Boulder, Brighton, Broomfield, Castle Rock, Castlewood, Columbine, Commerce City, Denver, and 14 more.

Cities in Area Code 303

Below is a list of cities that use area code 303 in this dataset:

• Arvada
• Aurora
• Boulder
• Brighton
• Broomfield
• Castle Rock
• Castlewood
• Columbine
• Commerce City
• Denver
• Englewood
• Highlands Ranch
• Ken Caryl
• Lafayette
• Lakewood
• Littleton
• Longmont
• Loveland
• Northglenn
• Parker
• Southglenn
• Thornton
• Westminster
• Wheat Ridge

Counties / Regions Covered

Area code 303 covers the following counties or regions:

• Adams
• Arapahoe
• Boulder
• Broomfield
• Denver
• Douglas
• Jefferson
• Larimer
• Weld

Location and Coordinates

The approximate central location for area code 303 is near latitude 39.77755625 and longitude -105.00266666667. Individual city coordinates vary within the area code's coverage:

• Arvada, Colorado (lat 39.80276, lng -105.08748)
• Aurora, Colorado (lat 39.72943, lng -104.83192)
• Boulder, Colorado (lat 40.01499, lng -105.27055)
• Brighton, Colorado (lat 39.98526, lng -104.82053)
• Broomfield, Colorado (lat 39.92054, lng -105.08665)
• Castle Rock, Colorado (lat 39.37221, lng -104.85609)
• Castlewood, Colorado (lat 39.58471, lng -104.90109)
• Columbine, Colorado (lat 39.58777, lng -105.06943)
• Commerce City, Colorado (lat 39.80832, lng -104.93387)
• Denver, Colorado (lat 39.73915, lng -104.9847)
• Englewood, Colorado (lat 39.64777, lng -104.98776)
• Highlands Ranch, Colorado (lat 39.55388, lng -104.96943)
• Ken Caryl, Colorado (lat 39.57582, lng -105.11221)
• Lafayette, Colorado (lat 39.9936, lng -105.08971)
• Lakewood, Colorado (lat 39.70471, lng -105.08137)
• Littleton, Colorado (lat 39.61332, lng -105.01665)
• Longmont, Colorado (lat 40.16721, lng -105.10193)
• Loveland, Colorado (lat 40.39776, lng -105.07498)
• Northglenn, Colorado (lat 39.88554, lng -104.9872)
• Parker, Colorado (lat 39.5186, lng -104.76136)
• Southglenn, Colorado (lat 39.58721, lng -104.95276)
• Thornton, Colorado (lat 39.86804, lng -104.97192)
• Westminster, Colorado (lat 39.83665, lng -105.0372)
• Wheat Ridge, Colorado (lat 39.7661, lng -105.07721)

Time Zone Information

Based on the underlying city data, area code 303 is used in the following time zone(s): America/Denver.

Related Area Code Pages

Explore related area code pages on Burning Compass:

• All area codes in Colorado
• Area codes for the city of Arvada
• Area codes in Adams