About Area Code 314
- Region Code
- 314
- City
- St Louis
- State
- Missouri
- Population
- 1,305,703
- Largest City
- St Louis
- Time Zone
- Central Time
Missouri
(314) Area Code 314 — St Louis, Missouri
314 Area Code – St Louis, Missouri: Location, Time Zone & History
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Map of Area Code 314
Available Phone Numbers
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History & Cultural Notes
St. Louis's numbering plan area has shrunk twice since 1947, when 314 was among the original area codes covering a wide swath of eastern Missouri.
Area code 573 split away in 1996, taking most of central and southeastern Missouri, and 636 followed in 1999 with the outer suburbs, leaving the core territory to cover the City of St. Louis and St. Louis County's inner-ring communities such as St. Charles, Florissant, Chesterfield, Maryland Heights, and Kirkwood. As available numbers neared exhaustion, the 557 overlay was added on August 12, 2022, alongside mandatory ten-digit local dialing.
The local economy blends heavy industry with research and services: aerospace and defense work anchored by Boeing sits alongside biosciences and plant-science research, brewing tied to Anheuser-Busch, and a base of financial services, healthcare, and higher education. That business landscape coexists with a strong sense of place—downtown's Gateway Arch is the tallest man-made monument in the United States, and St. Louis remains a recognized hub of blues music heritage along the Mississippi River corridor.