The 557 area code is a telephone area code serving St. To start a free reverse phone lookup, simply enter the full 10-digit number (including the 557 area code) below and access available caller information such as name, address, and more.
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Phone numbers with the 557 area code originate from the core of the St. Louis area, including the city of St. Louis and its inner-ring suburbs.
Area code 557 is an overlay to area code 314. Area code 314 was established in 1947. Area code 557 was added on August 12, 2022. Ten-digit dialing is required.
Area code 557 is a General Purpose Code which was placed in service on January 1, 1947.
Our reverse phone lookup will analyze the three-digit prefix of any 557 area code phone number and will show which telecommunications company and rate center it was initially assigned to. This prefix code data may help to determine the U.S. carrier, Missouri geographic region, and local calling area associated with the phone number.
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