St. Louis County Area Codes

About St. Louis County Area Codes

The county of St. Louis County, located in Missouri, is served by 2 telephone area code(s) in this dataset. These calling codes cover cities, suburbs, and unincorporated communities across the county.

Major phone area codes used in St. Louis County include 314, 636. The county mainly follows the America/Chicago time zone.

Cities and towns served by these area codes in St. Louis County include Affton, Ballwin, Chesterfield, Ferguson, Florissant, Hazelwood, Kirkwood, Maryland Heights, Mehlville, Oakville, Spanish Lake, St. Louis, University City, Webster Groves, Wildwood.

List of Area Codes in St. Louis County, Missouri

The table below lists all telephone area codes used in St. Louis County, Missouri, along with their associated cities and time zones from this dataset.

Related Area Code Pages

Explore related area code resources on Burning Compass:

• All area codes in Missouri
• Individual area code details are available from the table above.