Want to join Colorado for Business? Find out everything about the 303 area code and its importance to reach the customers in Colorado.
Area code 303 is a local code for Colorado, United States. It is one of the primary area codes among the 86 created in 1947 AD. This area code mainly serves the entire state of Colorado, including its capital, Denver.
The 303 area code is located in central Colorado, United States. It touches on 9 counties, including Denver County, Jefferson County, Arapahoe County, and Adams County. Major towns such as Denver, Boulder, Lakewood, Littleton, Broomfield, Castle Rock, etc. are all contained in this area code.
Area code 303 is a region with a unique history and covers a significant region in Colorado. Colorado is one of the most densely populated states with 3,529,299 residents.
Brief History of the 303 Area Code
Origins:
The area code 303 was introduced by the North American Numbering Plan(NANP) in 1947 AD to ease the calling process for long-distance calls in the United States. This code served for 41 years primarily in the Denver Metropolitan.
In 1988, new area code 719 was introduced as the second area code of Colorado. This was the result of geographic split at the time. Area code 719 spans up to quite a few of the counties in the south and east of the Denver metro area.
A second split was then made in 1995, creating the 970 area code, which essentially covers the remaining portion of the state. The 303 prefix was limited to a few nearby areas, specifically the urban Denver when 970 appeared.
303 phone numbers ran out as a result of population growth. Then, in 1998, the 720 area code was included to cover the same metro region as the area code 303. Phone numbers were running out once more as the population was outgrowing, Colorado had to introduce its 5th area code “983” to help the area covered by 303 and 720 previously.
Middle Digit History :
Before 1953, the middle digit was limited to either 0 or 1, with 0 denoting that the area code served the entire state, while 1 denoted that the area code applied only to a specific region within the state. The middle digit of the 303 area code is 0, and since it was established before 1953, it is evident that area code 303 initially encompassed the entire state of Colorado. However, it is no longer in use.
Location of Area code 303
The area code 303 is located in central Colorado, USA. It includes significant cities like Denver, Boulder, Lakewood, Littleton, Broomfield, Castlerock, Aurora, etc., and touches 9 counties, including Denver County, Adams, Arapahoe, Clear Creek, and Broomfield.
Currently, 720 and 983 are the two overlays serving the same areas.
This area code is bordered by area code 970 in the North and West and 719 in the East and South.
Map
Nearby Codes
| Cities | Area Codes |
| Denver, CO, Aurora, CO, Thornton, CO | 303/ 720/ 983 |
| Grand Island, NE | 308 |
| Albuquerque, NM | 505 |
| Lawton, OK | 580 |
| Colorado Springs, CO | 719 |
| Fort Collins, CO | 970 |
| Hutchinson, KS, Lawrence, KS, Garden City, KS | 785 |
Some of the major information about Area Code 303 is given below:
| Country | USA |
| State | Colorado |
| Area Coverage | 269,837 km² |
| Counties | Adams, Arapahoe, Clear Creek, Broomfield |
| Major City | Denver, Boulder |
| Population | 3,251,127 |
| Time Zone | Mountain Time Zone (UTC-7:00) |
| Telephone Number Format | +1 (303) XXX-XX12 |
| Zip Code | 80001-80643 |
303 Area Code Time Zone
This 303 Area Code time zone is the Mountain time zone. Another name for the Mountain time zone is America/Denver.
MST- Mountain Standard Time
MDT- Mountain Daylight Schedule of the observation of daylight saving time (early March to early November)
This time here falls 7 hours behind the UTC/GMT.
Benefits of Having 303 Business Phone Numbers in Denver, Colorado
Do you own a small business and want to get out to the packed Denver streets? Having a local phone number adds reliability to the company and facilitates its growth in Denver, especially if it has an area code 303 phone number. People here are deeply connected to the number 303 as it has a long history and they embrace it.
Enhances the local presence
This is significant because potential clients typically give local businesses another look.83% of customers prefer to support local companies than big chains, according to a 2024 Serpwatch survey. A 303 Area Code indicates that your company has local roots, which enhances the perception of your brand.
Access to Major Economic Hubs
As it covers the wide area of north central Colorado, this area code has a diverse business community. Several enterprises, including technology companies like Ibotta, and Ping, healthcare like DaVita Inc., finance and banking companies like Charles Schwab, and Liberty Media, and Education Institutions like the University of Colorado Boulder operate in this area, whether you want to build a clientele or network with suppliers. It includes everything, from small local enterprises to big enterprises in area code 303.
Ease of Communication
Getting a 303 number makes doing business with partners or clients easier because it removes the need for additional phone bills and miscommunication caused by distance. They work with office phones, cell phones, computers, laptops, tablets, and landlines – empowering employees to work from anywhere.
Top 10 cities in Area code 303 with their Population
| City | Total Population |
|---|---|
| Denver, CO | 600, 158 |
| Aurora, CO | 325, 078 |
| Lakewood, CO | 142, 980 |
| Thornton, CO | 118, 772 |
| Arvada, CO | 106, 433 |
| Westminster, CO | 106, 114 |
| Centennial, CO | 100, 377 |
| Boulder, CO | 97, 385 |
| Highlands Ranch, CO | 96, 713 |
| Longmont, CO | 86, 270 |
How to Acquire an Area Code 303 Number
In the past, obtaining a local area business number was a challenging and time-consuming process. However, there are many virtual number providers nowadays. These number providers distribute company owners with a new and simpler method for obtaining a business number with a local area code. It has never been easier to set up a business phone system.
How to Obtain a 303 Area Code Phone Number: Step-by-Step Guide
- Search for Business numbers in any virtual number provider app/website.
- Check the availability of numbers and the service plans you need for the business.
- Register as the company providing all details about the company. Ensure your business needs align with this region.
- During the setup procedure, select “303” from the list of available area codes.
- Select your preferred number after ‘303’.
- Finish up the purchasing after the payments.
Notify your contacts and update your business profile to spread your new 303 number for your business. No additional equipment is required for setup and the new number can be used immediately after finishing the setup.
How Does the 303 Area Code Number Work?
A 10-digit number’s area code, the first three numbers, directs the call to a certain region. The call is routed to a specific telephone inside that area by the next three digits, which are the central office code. The call is routed to a particular subscriber or line using the last four digits, often known as a station code.
Conclusion
The 303 area code is more than just a prefix in numbers for the people of Colorado, it’s a means of becoming well-known in central Colorado, United States. Being able to link the dynamic cities of Denver, Aurora, and beyond with a local area code number, with its rich history, might be a strategic advantage for your organization. It gives you access to a flourishing economic hub, facilitates smooth communication, and increases your local credibility.
Frequently Asked Questions (FAQs)
How to get a 303 phone number?
Simply, register the company with details. Find the availability of the number you want and the perfect service plan, then select ‘303’ as the local area code number. Choose the remaining number as you like and as available. Just quickly finish the setup process, after the payment your number will be ready.
Where is area code 303?
The 303 area code is located in central Colorado, United States. Cities like Denver, Boulder, Aurora, Lakewood, Thornton, Arvada, Westminster, Centennial, Golden, Broomfield, etc, which cover central Colorado have an Area Code 303.
What is the zip code for the 303 area code?
The zip code for this local region ranges from 80001 to 80643. The Colorado area code 303 has different zip codes for each city. Jefferson County’s Arvada area code is 80001.
What is the area code in Colorado?
Colorado area codes are 303, 719, 720, 970, and 983.
What are the major cities in the 303 area code map?
Area code 303 serves Denver and Boulder, as well as their surrounding suburbs, including Lakewood, Littleton, Longmont, Broomfield, Aurora, and Castle Rock.