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Area Code 314: Coverage, Cities, and Key Information
Explore Area Code 314: St. Louis' telecom hub since 1947. Covers St. Louis, Kirkwood, & University City. Understand the 557 overlay implemented August 12, 2022. Why is 10-digit dialing mandatory since 2021? Learn about NANP compliance and Missouri PSC regulations.
Area Code 314: Coverage, Cities, and Key Information
Area Code 314 is a crucial part of St. Louis, Missouri's telecommunications landscape. This guide provides a comprehensive overview of its geographic coverage, major cities, regulatory framework, and historical milestones.
What is Area Code 314?
Area Code 314 serves the city of St. Louis and its inner-ring suburbs. It was one of the original area codes established in 1947 as part of the North American Numbering Plan (NANP). In 2022, it was overlaid with Area Code 557 to accommodate the growing demand for phone numbers.
Geographic Coverage of Area Code 314
Area Code 314 encompasses most of St. Louis and parts of neighboring St. Louis County. Here are some major cities included in this area code:
- St. Louis, Missouri
- Kirkwood, Missouri
- Maryland Heights, Missouri
- Mehlville, Missouri
- Oakville, Missouri
- Spanish Lake, Missouri
- University City, Missouri
- Webster Groves, Missouri
- Affton, Missouri
- Ferguson, Missouri
- Florissant, Missouri
- Hazelwood, Missouri
Technical Specifications
- NPA Code: 314
- Overlay: Area Code 557
- Location: Missouri, USA
- Implementation Dates:
- Original: 1947
- Overlay: August 12, 2022
Dialing and Regulatory Information
Since October 24, 2021, ten-digit dialing is mandatory for all calls within the 314 area due to the implementation of the 988 National Suicide Prevention Lifeline. This change was overseen by the Missouri Public Service Commission, which regulates telecommunications in the state.
Dialing Requirements
- Local Calls: 10-digit dialing
- Toll Calls: 1+10-digit dialing
Historical Milestones
- 1947: Area Code 314 was established as one of the original area codes.
- 1996: Area Code 573 was created from a split of 314.
- 1999: Area Code 636 was created from another split of 314.
- 2021: Transition to ten-digit dialing.
- 2022: Introduction of Area Code 557 overlay.
Telecommunications Services and Carriers
Area Code 314 supports a variety of telecommunications services, including landline, wireless, and VoIP. Major carriers in the region include:
Conclusion
Area Code 314 remains a vital part of the telecommunications infrastructure in St. Louis, Missouri. By adapting to technological advancements and regulatory changes, it continues to serve the growing needs of its residents and businesses.
For more information on area codes and regulations, visit the North American Numbering Plan Administration.
Frequently Asked Questions
What area code is St. Louis Missouri?
St. Louis, Missouri primarily uses area code 314. However, due to increased demand, area code 557 was added as an overlay in 2022. Therefore, both 314 and 557 serve St. Louis.
What area code is 314 near St. Louis?
Area code 314 covers St. Louis City and several inner-ring suburbs in St. Louis County, Missouri. Some of the included suburbs are Kirkwood, Maryland Heights, Mehlville, and University City.
When did area code 314 start mandatory 10-digit dialing?
Mandatory 10-digit dialing for area code 314 began on October 24, 2021, due to the implementation of the 988 National Suicide Prevention Lifeline.
Why does St. Louis have two area codes now?
St. Louis now has two area codes (314 and 557) to accommodate the growing demand for phone numbers. The 557 overlay was implemented in 2022.
What is the area code overlay for 314?
The area code overlay for 314 is 557. It was introduced on August 12, 2022, to ensure sufficient phone numbers for the region.
What cities are covered by the 557 area code in Missouri?
Area code 557 is an overlay of the 314 area code and therefore covers the same geographic region. This includes the city of St. Louis and inner-ring suburbs in St. Louis County, Missouri.
When was area code 573 created from area code 314?
Area code 573 was split from area code 314 in 1996 to accommodate the growing need for phone numbers in the region.
What Missouri area code was split in 1999?
In 1999, area code 636 was split from area code 314 to handle the increasing demand for phone numbers in the St. Louis metropolitan area.
What area code was created from 314 in 1999?
Area code 636 was created from 314 in 1999.
How do I dial a 314 number now?
You must dial 1 + the 10-digit number (including area code) for all calls to a 314 number, whether local or long-distance.
Is area code 314 in Eastern or Central time?
Area code 314, located in Missouri, observes Central Time.
What is the regulatory body overseeing area code 314 in Missouri?
The Missouri Public Service Commission (MPSC) is responsible for regulating telecommunications services within area code 314.
What area codes cover the St. Louis metro area?
The St. Louis metro area is covered by area codes 314, 557, 636, and 573. Area codes 314 and 557 serve the city of St. Louis and its inner ring suburbs.
What cities are covered by area code 314?
Area code 314 covers the city of St. Louis and many of its inner-ring suburbs. This includes Kirkwood, Maryland Heights, Mehlville, Oakville, Spanish Lake, University City, Webster Groves, Affton, Ferguson, Florissant, and Hazelwood.
How do I dial a 314 number from another area code?
You must dial 1 + the 10-digit number (including the area code) to reach a 314 number. This rule applies even when calling from within the same area code. 10-digit dialing became mandatory in 2021.
When was area code 314 created?
Area code 314 was one of the original North American Numbering Plan (NANP) area codes established in 1947. It has since been split to create area codes 573 in 1996 and 636 in 1999.
What is the overlay area code for 314?
The overlay area code for 314 is 557. This means both area codes serve the same geographic region, and 10-digit dialing (including the area code) is required for all calls.
What county is area code 314 primarily in?
Area code 314 primarily serves the city of St. Louis and parts of surrounding St. Louis County, Missouri. It covers several municipalities in the county, including Kirkwood, University City, and Ferguson.
How to dial area code 314 from within the same area code?
Even when calling within area code 314, you must dial the full 10-digit number. This includes the 314 area code and the seven-digit phone number. 10-digit dialing became mandatory in October 2021.
What area codes were split from 314?
Area codes 573 and 636 were both split from the original 314 area code. 573 was created in 1996 and 636 followed in 1999, both to address the growing need for phone numbers.
Area code 314 is in what state?
Area code 314 is located within the state of Missouri, USA. It primarily serves the city of St. Louis and surrounding areas within St. Louis County.