Area code 303 serves the north-central part of Colorado, primarily the Denver metro area. It was one of the first area codes and is now overlaid by 720 and 983 due to regional growth. In the heart of this zone is Boulder, a city known for its stunning Flatirons backdrop, outdoor recreation, and progressive community. Pearl Street Mall, local breweries, and the University of Colorado Boulder are defining features of this environmentally conscious and lively city.
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Select Virtual Numbers by Area Code 303
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Try searching for another area codeCities of Area Code 303
Description of the cities in area code 303
About Arvada
Arvada is a vibrant city located in the CO area, home to approximately 115,368 residents.
Geographically, it lies at a latitude of 39.80276 and a longitude of -105.08748 , with an elevation of 1629 meters above sea level.
The city spans from 39.892718 N to 39.784035 S and stretches east to -105.040499 and west to -105.303403.
Learn more about Arvada on Wikipedia
About Aurora
Aurora is a vibrant city located in the CO area, home to approximately 359,407 residents.
Geographically, it lies at a latitude of 39.72943 and a longitude of -104.83192 , with an elevation of 1648 meters above sea level.
The city spans from 39.826671 N to 39.550907 S and stretches east to -104.488906 and west to -104.886613.
Learn more about Aurora on Wikipedia
About Boulder
Boulder is a vibrant city located in the CO area, home to approximately 107,349 residents.
Geographically, it lies at a latitude of 40.01499 and a longitude of -105.27055 , with an elevation of 1624 meters above sea level.
The city spans from 40.094412 N to 39.964351 S and stretches east to -105.178021 and west to -105.30145.
Learn more about Boulder on Wikipedia
About Brighton
Brighton is a vibrant city located in the CO area, home to approximately 37,585 residents.
Geographically, it lies at a latitude of 39.98526 and a longitude of -104.82053 , with an elevation of 1519 meters above sea level.
The city spans from 40.03309 N to 39.899686 S and stretches east to -104.718276 and west to -104.86506.
Learn more about Brighton on Wikipedia
About Broomfield
Broomfield is a vibrant city located in the CO area, home to approximately 65,065 residents.
Geographically, it lies at a latitude of 39.92054 and a longitude of -105.08665 , with an elevation of 1644 meters above sea level.
The city spans from 40.044144 N to 39.889212 S and stretches east to -104.961071 and west to -105.166056.
About Castle Rock
Castle Rock is a vibrant city located in the CO area, home to approximately 55,591 residents.
Geographically, it lies at a latitude of 39.37221 and a longitude of -104.85609 , with an elevation of 1897 meters above sea level.
The city spans from 39.434999 N to 39.311294 S and stretches east to -104.761306 and west to -104.920729.
Learn more about Castle Rock on Wikipedia
About Castlewood
Castlewood is a vibrant city located in the CO area, home to approximately 25,271 residents.
Geographically, it lies at a latitude of 39.58471 and a longitude of -104.90109 , with an elevation of 1746 meters above sea level.
The city spans from 39.605317438089 N to 39.564103361911 S and stretches east to -104.87434368443 and west to -104.92783691557.
Learn more about Castlewood on Wikipedia
About Columbine
Columbine is a vibrant city located in the CO area, home to approximately 24,280 residents.
Geographically, it lies at a latitude of 39.58777 and a longitude of -105.06943 , with an elevation of 1688 meters above sea level.
The city spans from 39.609841 N to 39.554149 S and stretches east to -105.037698 and west to -105.091393.
Learn more about Columbine on Wikipedia
About Commerce City
Commerce City is a vibrant city located in the CO area, home to approximately 53,696 residents.
Geographically, it lies at a latitude of 39.80832 and a longitude of -104.93387 , with an elevation of 1572 meters above sea level.
The city spans from 39.928838 N to 39.783764 S and stretches east to -104.659163 and west to -104.968863.
Learn more about Commerce City on Wikipedia
About Denver
Denver is a vibrant city located in the CO area, home to approximately 729,019 residents.
Geographically, it lies at a latitude of 39.73915 and a longitude of -104.9847 , with an elevation of 1609 meters above sea level.
The city spans from 39.914247 N to 39.614423 S and stretches east to -104.600302 and west to -105.109927.
Learn more about Denver on Wikipedia
About Englewood
Englewood is a vibrant city located in the CO area, home to approximately 33,082 residents.
Geographically, it lies at a latitude of 39.64777 and a longitude of -104.98776 , with an elevation of 1637 meters above sea level.
The city spans from 39.678684 N to 39.616687 S and stretches east to -104.959426 and west to -105.034955.
Learn more about Englewood on Wikipedia
About Highlands Ranch
Highlands Ranch is a vibrant city located in the CO area, home to approximately 96,713 residents.
Geographically, it lies at a latitude of 39.55388 and a longitude of -104.96943 , with an elevation of 1732 meters above sea level.
The city spans from 39.56619 N to 39.510546 S and stretches east to -104.903424 and west to -105.05306.
Learn more about Highlands Ranch on Wikipedia
About Ken Caryl
Ken Caryl is a vibrant city located in the CO area, home to approximately 32,438 residents.
Geographically, it lies at a latitude of 39.57582 and a longitude of -105.11221 , with an elevation of 1756 meters above sea level.
The city spans from 39.609777 N to 39.549468 S and stretches east to -105.082674 and west to -105.156317.
Learn more about Ken Caryl on Wikipedia
About Lafayette
Lafayette is a vibrant city located in the CO area, home to approximately 27,729 residents.
Geographically, it lies at a latitude of 39.9936 and a longitude of -105.08971 , with an elevation of 1588 meters above sea level.
The city spans from 40.048408 N to 39.957782 S and stretches east to -105.052774 and west to -105.157078.
Learn more about Lafayette on Wikipedia
About Lakewood
Lakewood is a vibrant city located in the CO area, home to approximately 729,019 residents.
Geographically, it lies at a latitude of 39.73915 and a longitude of -104.9847 , with an elevation of 1609 meters above sea level.
The city spans from 39.914247 N to 39.614423 S and stretches east to -104.600302 and west to -105.109927.
Learn more about Lakewood on Wikipedia
About Littleton
Littleton is a vibrant city located in the CO area, home to approximately 46,368 residents.
Geographically, it lies at a latitude of 39.61332 and a longitude of -105.01665 , with an elevation of 1631 meters above sea level.
The city spans from 39.62947 N to 39.535246 S and stretches east to -104.973246 and west to -105.111985.
Learn more about Littleton on Wikipedia
About Longmont
Longmont is a vibrant city located in the CO area, home to approximately 92,088 residents.
Geographically, it lies at a latitude of 40.16721 and a longitude of -105.10193 , with an elevation of 1519 meters above sea level.
The city spans from 40.210449 N to 40.126302 S and stretches east to -104.998852 and west to -105.178387.
Learn more about Longmont on Wikipedia
About Loveland
Loveland is a vibrant city located in the CO area, home to approximately 75,182 residents.
Geographically, it lies at a latitude of 40.39776 and a longitude of -105.07498 , with an elevation of 1519 meters above sea level.
The city spans from 40.465664 N to 40.34897 S and stretches east to -104.962076 and west to -105.159768.
Learn more about Loveland on Wikipedia
About Northglenn
Northglenn is a vibrant city located in the CO area, home to approximately 39,197 residents.
Geographically, it lies at a latitude of 39.88554 and a longitude of -104.9872 , with an elevation of 1639 meters above sea level.
The city spans from 40.014982 N to 39.86814 S and stretches east to -104.94227 and west to -105.015532.
Learn more about Northglenn on Wikipedia
About Parker
Parker is a vibrant city located in the CO area, home to approximately 49,550 residents.
Geographically, it lies at a latitude of 39.5186 and a longitude of -104.76136 , with an elevation of 1789 meters above sea level.
The city spans from 39.566088 N to 39.45307 S and stretches east to -104.70848 and west to -104.830058.
Learn more about Parker on Wikipedia
About Southglenn
Southglenn is a vibrant city located in the CO area, home to approximately 42,268 residents.
Geographically, it lies at a latitude of 39.58721 and a longitude of -104.95276 , with an elevation of 1705 meters above sea level.
The city spans from 39.613813871776 N to 39.560606728224 S and stretches east to -104.91822483008 and west to -104.98729276992.
Learn more about Southglenn on Wikipedia
About Thornton
Thornton is a vibrant city located in the CO area, home to approximately 133,451 residents.
Geographically, it lies at a latitude of 39.86804 and a longitude of -104.97192 , with an elevation of 1631 meters above sea level.
The city spans from 40.000436 N to 39.830873 S and stretches east to -104.884022 and west to -105.015536.
Learn more about Thornton on Wikipedia
About Westminster
Westminster is a vibrant city located in the CO area, home to approximately 116,317 residents.
Geographically, it lies at a latitude of 39.83665 and a longitude of -105.0372 , with an elevation of 1641 meters above sea level.
The city spans from 39.968528 N to 39.818138 S and stretches east to -104.987761 and west to -105.165542.
Learn more about Westminster on Wikipedia
About Wheat Ridge
Wheat Ridge is a vibrant city located in the CO area, home to approximately 31,192 residents.
Geographically, it lies at a latitude of 39.7661 and a longitude of -105.07721 , with an elevation of 1664 meters above sea level.
The city spans from 39.794733 N to 39.754659 S and stretches east to -105.05323 and west to -105.165457.
Learn more about Wheat Ridge on Wikipedia
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