557 Area Code

Area Code	557
State	Missouri
Country	United State
Code Type	General Purpose Code
In Service	Yes
Timezone	Central Standard Time (CST)
Overlay Complex	314/557
Assignment Date	30-OCT-00
In Service Date	12-AUG-22
Area Code	557

What is the 557 Area Code?

Area code 557 is located in Missouri, within United State, serving the region's residents and businesses. The 557 area code was first assigned in 30-OCT-00 and has been in service since 12-AUG-22.

The 557 area code is part of an overlay complex, which includes the area codes 314/557. These codes all serve the same geographic region.

Cities in Area Code 557

Affton

Bella Villa

Bellefontaine Neighbors

Champ

Clayton

Concord

Kinloch

Ladue

Lemay

Oakland

St. Ann

Area codes of Missouri

Further Details on the 557 Area Code

Where is the 557 Area Code Located?

Area code 557 serves the entire state of Missouri in United State, providing phone services to both residential and business users. It covers urban, suburban, and rural areas alike, ensuring reliable communication across the region.

What time zone is area code 557 in?

Area code 557 is located in the Central Standard Time (CST) time zone. This designation indicates the predominant time zone for calls made within this area code.

When was area code 557 assigned and put into service?

Area code 557 was officially assigned on 30-OCT-00, signifying its designation for use in telecommunications, and it became operational on 12-AUG-22, allowing callers to begin using this area code for their dialing needs.

Is the 557 Area Code Still Active?

Yes, the 302 area code is still active and in service. It is the primary area code for all landline and mobile phones registered in Delaware. There are no overlay codes currently in place for the state.

What are the dialing requirements for making calls with area code 557?

For local calls within area code 557, the required dialing pattern is 10D. For toll calls, you'll need to dial 1+10D , where "D" indicates the number of digits to dial. When calling foreign NPAs from area code 557, local calls require 10D, and toll calls use 1+10D.

Data Sources: NANPA Area Code, U.S. Area Code Map