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303 Area Code: Location, Time Zone and Phone Lookup

303 Area Code Location, Time Zone & Map

  • State:Colorado
  • Timezone:Mountain
  • Current Time:
Major Cities in 303 Area Code
  • Denver
  • Aurora
  • Lakewood
  • Thornton
  • Arvada
  • Westminster
  • Centennial
  • Boulder
  • Highlands Ranch
  • Longmont
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The 303 area code is used by phone numbers from city of Denver, Aurora, and Lakewood in the state of Colorado. As one of the 269 US cellphone area codes, the 303 phone code includes nearly 780,899 phone numebrs and covers almost 522,217 people.

303 Area Code: History & Time Zone

The 303 area code is one of the older area codes in the United States. It was one of the original area codes created in 1947. The 303 area code covers the Denver metropolitan area. The 303 area code was originally assigned to the entire state of Colorado. In 1995, the area code was split, and the northern part of Colorado was assigned the 970 area code.

The 303 area code is in the Mountain Time Zone.

Cities Served by Area Code 303

303 area code citiesIf you're looking for a list of cities served by 303 area code, you've come to the right place. Here is a comprehensive list of all the cities in the area.

Adams City, Aurora, Brighton, Commerce City, Derby, Estes Park, Federal Heights, Foxfield, Genesee, Glendale, Greenwood Village, Henderson, Idledale, Indian Hills, Lakewood, Larkspur, Littleton, Lochbuie, Louisville, Morrison, Northglenn, Parker, Sheridan, Silverthorne, Superior, Thornton, Westminster, Wheat Ridge

Toll Charges for 303 Area Code Phone Numbers

The 303 area code phone numbers have been in use since 1947, and over the years, the cost of using these numbers has increased. In the early days, there was no charge to call a 303 number, but now there is a toll charge for these calls.The charge for calling a 303 number is $0.02 per minute, with a minimum charge of $0.10. This charge applies to both local and long-distance calls, and it is the same no matter which phone company you use.

If you need to call a 303 number, be sure to factor in the cost of the call. It might be cheaper to use a different number, especially if you are calling long-distance.

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Nearby Area Codes in Colorado

Prefixes in 303