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Area Code 314: Comprehensive Guide to Technical Specifications and Data

Info: Area code 314 covers St. Louis, Missouri, and its inner-ring suburbs. It is part of the North American Numbering Plan (NANP) and was overlaid with area code 557 in 2022.

Technical Specifications of Area Code 314

  • NPA Code: 314
  • Type: Overlay (with area code 557)
  • Implementation Date: 1947 (original), August 12, 2022 (overlay)
  • State: Missouri

Geographic Coverage

Area code 314 serves the city of St. Louis and most of its inner-ring suburbs in neighboring St. Louis County. The central coordinates are approximately 38.62°N latitude and 90.22°W longitude.

Major Cities Covered

  • St. Louis, Missouri: 38.62727, -90.19789
  • Kirkwood, Missouri: 38.58339, -90.40678
  • Maryland Heights, Missouri: 38.71311, -90.42984
  • Mehlville, Missouri: 38.50839, -90.32289
  • Oakville, Missouri: 38.47005, -90.30456
  • Spanish Lake, Missouri: 38.78783, -90.21594
  • University City, Missouri: 38.65588, -90.30928
  • Webster Groves, Missouri: 38.59255, -90.35734
  • Affton, Missouri: 38.55061, -90.33317
  • Ferguson, Missouri: 38.74422, -90.30539
  • Florissant, Missouri: 38.78922, -90.32261
  • Hazelwood, Missouri: 38.77144, -90.37095

Numbering Statistics

  • Total Numbers Available: Data not provided
  • Utilization Rate: Data not provided
  • Exhaust Projection: Data not provided

Network Infrastructure

Major Carriers

[List of major carriers with market share percentages]

Services Offered

  • Landline
  • Wireless
  • VoIP

Regulatory Framework

  • Regulatory Body: Missouri Public Service Commission
  • Dialing Requirements: Transitioned to ten-digit dialing by October 24, 2021
  • NANPA Regulations: Complies with all NANPA regulations, including number pooling and overlay implementation

Historical Milestones

  • 1947: Area code 314 implemented as one of the original North American area codes
  • 1996: Area code 573 created from a split of 314
  • 1999: Area code 636 created from a split of 314
  • 2021: Transition to ten-digit dialing due to the designation of 988 as the National Suicide Prevention Lifeline
  • 2022: Area code 557 overlaid on 314

Conclusion

Area code 314 is a vital part of St. Louis's telecommunications infrastructure. The overlay with area code 557 ensures adequate numbering resources to meet the region's growing demand. Over the years, the area code has adapted through splits and overlays to address increasing telecommunications needs, maintaining compliance with NANPA regulations.