MISSOURI · AREA CODE GUIDE
557 area code location: Saint Louis and Kirkwood, Missouri
- Local date and time
- Central Time
Map data: HSIP (2010) · NANPA · US Census Bureau, checked 26 September 2026. Boundaries are approximate.
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Download the 557 area code map
A printable area code 557 location map, with time zone and state. Use the PNG image in a document or slide; the SVG stays sharp at any size.
557 area code at a glance
- State
- Missouri
- Primary cities
- Saint Louis, Kirkwood, and Creve Coeur
- Established
- Population
- Largest community: Saint Louis, 278,144 (2025)Not an area-code population.
- Prefixes in service
- 72 as of 13 October 2026
An area code does not show where a caller is now.
History
Country and calling code: United States (+1).
Parent code: 314.
New code planned: No, as of 22 September 2026.
Time zone
- Central Time
- Standard time UTC−06:00
- Daylight saving time UTC−05:00
Counties and cities covered
557 numbers are issued across 7 communities. These are telephone exchange areas, which follow the phone network rather than city limits, so a place can sit just outside the boundary of the town it is named for.
Counties of the communities we could place (the code may reach further): St. Louis County and St. Louis city.
- Saint Louis
- Kirkwood
- Creve Coeur
- Ladue
- Mehlville
- Oakville
- Sappington
Notable places in 557
| Place | Where | What it is |
|---|---|---|
| Washington University in St. Louis | 5.4 km from Saint Louis | University, 18,015 12-month enrollment (2023–24) |
| St. Louis Lambert International Airport | 11.8 km from Creve Coeur | Commercial airport, 7,807,362 enplanements (2024) |
| Missouri Botanical Garden | 2.7 km from Saint Louis | Botanical garden |
| Francis Olympic Field | 6.1 km from Saint Louis | Stadium |
| Enterprise Center | 3.8 km from Saint Louis | Arena |
| Gateway Arch National Park | 5.3 km from Saint Louis | National Park |
| Saint Louis University | 0.9 km from Saint Louis | University, 19,321 12-month enrollment (2023–24) |
| Saint Louis Art Museum | 4.4 km from Saint Louis | Museum |
| Webster University | 6.3 km from Ladue | University, 10,103 12-month enrollment (2023–24) |
| Mildred Lane Kemper Art Museum | 5.2 km from Saint Louis | Museum |
Area code 314 has its own page.
Area code 557
557 started service on .It came from 314.
Its numbers are issued in the same communities as 314.
No new code is planned for the region as of .
Questions about 557
Where is the 557 area code?
557 is in Missouri. Its numbers are issued in Saint Louis, Kirkwood, Creve Coeur, and 4 other communities.
What time zone is area code 557 in?
557 is in Central Time. Daylight saving time is observed.
Is 557 an overlay?
Yes. 557 was added as an overlay on 314 on 12 August 2022.
What cities are in the 557 area code?
Saint Louis, Kirkwood, Creve Coeur, Ladue, and Mehlville, and 2 other communities.
What state is area code 557 in?
Area code 557 is in Missouri.
What counties are covered by area code 557?
Area code 557 covers communities in St. Louis County and St. Louis city.
Is 557 a toll-free area code?
No. 557 is a geographic area code. The toll-free codes are 800, 833, 844, 855, 866, 877, and 888.
Sources: NANPA area code listing, NANPA places by area code, NANPA central office code assignments, U.S. Census Bureau population estimates, OMB metropolitan area delineations. Checked .
Business phone numbers in area code 557, answered by an AI agent
A local number for Saint Louis, Kirkwood, and Creve Coeur, Missouri, with an AI receptionist that takes caller details, answers the questions you give it, and books appointments. Numbers depend on what carriers have left.