557 Area CodeSt. Louis, MO
Area code 557 covers St. Louis and 90 other cities in Missouri: 1,094,218 people in 2 counties, St. Louis County and St. Louis city, on Central Time (CT). It overlays 314.
Overview
- Major City
- St. Louis
- State
- Missouri (MO)
- Timezone
- Central Time (CT)
- Current Time
- –:––
- Overlay
- Yes – shares area with 314
Where is area code 557?
Overview of the 557 Area Code
Geographic Coverage of the 557 Area Code
All 91 cities- 279,695
- 51,290
- Chesterfieldalso 63649,465
- 36,143
- 34,349
- 29,348
St. Louis Area Codes Overview
- 314Same territory
- 557This page
What cities does area code 557 cover?
| City | State | Population | Population in 557 | % of listed-city population | % of City |
|---|---|---|---|---|---|
| St. Louis | MO | 279,695 | 279,695 | 27.8% | 100.0% |
| Florissant | MO | 51,290 | 51,290 | 5.1% | 100.0% |
| Chesterfield | MO | 49,465 | 10,106 | 4.9% | 20.4% |
| Oakville | MO | 36,143 | 36,143 | 3.6% | 100.0% |
| University City | MO | 34,349 | 34,349 | 3.4% | 100.0% |
| Kirkwood | MO | 29,348 | 29,348 | 2.9% | 100.0% |
| Mehlville | MO | 28,380 | 28,380 | 2.8% | 100.0% |
| Maryland Heights | MO | 27,671 | 27,671 | 2.8% | 100.0% |
| Hazelwood | MO | 24,951 | 24,951 | 2.5% | 100.0% |
| Webster Groves | MO | 23,525 | 23,525 | 2.3% | 100.0% |
| Affton | MO | 20,307 | 20,307 | 2.0% | 100.0% |
| Spanish Lake | MO | 19,650 | 19,650 | 2.0% | 100.0% |
| Old Jamestown | MO | 19,184 | 19,184 | 1.9% | 100.0% |
| Creve Coeur | MO | 18,533 | 18,533 | 1.8% | 100.0% |
| Ferguson | MO | 18,043 | 18,043 | 1.8% | 100.0% |
| Clayton | MO | 17,512 | 17,512 | 1.7% | 100.0% |
| Lemay | MO | 16,645 | 16,645 | 1.7% | 100.0% |
| Concord | MO | 16,421 | 16,421 | 1.6% | 100.0% |
| Overland | MO | 15,547 | 15,547 | 1.5% | 100.0% |
| Jennings | MO | 13,024 | 13,024 | 1.3% | 100.0% |
| St. Ann | MO | 12,704 | 12,704 | 1.3% | 100.0% |
| Crestwood | MO | 12,239 | 12,239 | 1.2% | 100.0% |
| Town and Country | MO | 11,625 | 11,625 | 1.2% | 100.0% |
| Bridgeton | MO | 11,301 | 11,301 | 1.1% | 100.0% |
| Bellefontaine Neighbors | MO | 10,401 | 10,401 | 1.0% | 100.0% |
| Des Peres | MO | 9,171 | 9,171 | 0.9% | 100.0% |
| Sunset Hills | MO | 9,099 | 9,099 | 0.9% | 100.0% |
| Richmond Heights | MO | 9,096 | 9,096 | 0.9% | 100.0% |
| Olivette | MO | 8,960 | 8,960 | 0.9% | 100.0% |
| Ladue | MO | 8,937 | 8,937 | 0.9% | 100.0% |
| Brentwood | MO | 8,111 | 8,111 | 0.8% | 100.0% |
| Maplewood | MO | 8,077 | 8,077 | 0.8% | 100.0% |
| Berkeley | MO | 8,058 | 8,058 | 0.8% | 100.0% |
| Sappington | MO | 7,580 | 7,580 | 0.8% | 100.0% |
| Black Jack | MO | 6,575 | 6,575 | 0.7% | 100.0% |
| St. John | MO | 6,472 | 6,472 | 0.6% | 100.0% |
| Shrewsbury | MO | 6,263 | 6,263 | 0.6% | 100.0% |
| Glendale | MO | 6,082 | 6,082 | 0.6% | 100.0% |
| Glasgow Village | MO | 5,429 | 5,429 | 0.5% | 100.0% |
| Dellwood | MO | 4,833 | 4,833 | 0.5% | 100.0% |
| Rock Hill | MO | 4,669 | 4,669 | 0.5% | 100.0% |
| Breckenridge Hills | MO | 4,369 | 4,369 | 0.4% | 100.0% |
| Normandy | MO | 4,247 | 4,247 | 0.4% | 100.0% |
| Castle Point | MO | 3,962 | 3,962 | 0.4% | 100.0% |
| Woodson Terrace | MO | 3,888 | 3,888 | 0.4% | 100.0% |
| Frontenac | MO | 3,777 | 3,777 | 0.4% | 100.0% |
| Northwoods | MO | 3,592 | 3,592 | 0.4% | 100.0% |
| Pine Lawn | MO | 2,693 | 2,693 | 0.3% | 100.0% |
| Green Park | MO | 2,682 | 2,682 | 0.3% | 100.0% |
| Pagedale | MO | 2,516 | 2,516 | 0.3% | 100.0% |
| Riverview | MO | 2,334 | 2,334 | 0.2% | 100.0% |
| Marlborough | MO | 2,191 | 2,191 | 0.2% | 100.0% |
| Moline Acres | MO | 2,102 | 2,102 | 0.2% | 100.0% |
| Bel-Ridge | MO | 2,084 | 2,084 | 0.2% | 100.0% |
| Warson Woods | MO | 1,994 | 1,994 | 0.2% | 100.0% |
| Hanley Hills | MO | 1,964 | 1,964 | 0.2% | 100.0% |
| Vinita Park | MO | 1,934 | 1,934 | 0.2% | 100.0% |
| Wellston | MO | 1,590 | 1,590 | 0.2% | 100.0% |
| Lakeshire | MO | 1,519 | 1,519 | 0.2% | 100.0% |
| Oakland | MO | 1,378 | 1,378 | 0.1% | 100.0% |
| Bel-Nor | MO | 1,357 | 1,357 | 0.1% | 100.0% |
| St. George | MO | 1,337 | 1,337 | 0.1% | 100.0% |
| Charlack | MO | 1,280 | 1,280 | 0.1% | 100.0% |
| Velda City | MO | 1,278 | 1,278 | 0.1% | 100.0% |
| Hillsdale | MO | 1,185 | 1,185 | 0.1% | 100.0% |
| Calverton Park | MO | 1,134 | 1,134 | 0.1% | 100.0% |
| Cool Valley | MO | 1,009 | 1,009 | 0.1% | 100.0% |
| Country Club Hills | MO | 998 | 998 | 0.1% | 100.0% |
| Grantwood Village | MO | 929 | 929 | 0.1% | 100.0% |
| Pasadena Hills | MO | 885 | 885 | 0.1% | 100.0% |
| Norwood Court | MO | 878 | 878 | 0.1% | 100.0% |
| Velda Village Hills | MO | 855 | 855 | 0.1% | 100.0% |
| Edmundson | MO | 848 | 848 | 0.1% | 100.0% |
| Bella Villa | MO | 734 | 734 | 0.1% | 100.0% |
| Flordell Hills | MO | 707 | 707 | 0.1% | 100.0% |
| Greendale | MO | 635 | 635 | 0.1% | 100.0% |
| Sycamore Hills | MO | 548 | 548 | 0.1% | 100.0% |
| Crystal Lake Park | MO | 504 | 504 | 0.1% | 100.0% |
| Beverly Hills | MO | 458 | 458 | 0.1% | 100.0% |
| Pasadena Park | MO | 428 | 428 | 0.0% | 100.0% |
| Wilbur Park | MO | 427 | 427 | 0.0% | 100.0% |
| Huntleigh | MO | 353 | 353 | 0.0% | 100.0% |
| Westwood | MO | 312 | 312 | 0.0% | 100.0% |
| Uplands Park | MO | 304 | 304 | 0.0% | 100.0% |
| Vinita Terrace | MO | 277 | 277 | 0.0% | 100.0% |
| Kinloch | MO | 262 | 262 | 0.0% | 100.0% |
| Bellerive | MO | 188 | 188 | 0.0% | 100.0% |
| Mackenzie | MO | 134 | 134 | 0.0% | 100.0% |
| Glen Echo Park | MO | 116 | 116 | 0.0% | 100.0% |
| Country Life Acres | MO | 71 | 71 | 0.0% | 100.0% |
| Champ | MO | 7 | 7 | 0.0% | 100.0% |
City population is shown in full; each city's share inside 557 is measured from Census tract centroids.
- Census PEP Vintage 2024 (city populations)
- · 2020 Census tract centroids with NANP and TIGERweb boundaries (footprint, counties, city shares)
- · NANPA NPA and CO Code reports (dates, prefixes)
- · Methodology
Has area code 557 been reported for unwanted calls?
Yes – 57 FTC complaints, Jun 9 – Sep 30, 2026.
- 40% robocalls
- ↑ 38% vs prior period
- FTC data, retrieved 2026-10-05
Most-reported subjects
- Other47%27
- Calls pretending to be government, businesses, or family and friends18%10
- Medical & prescriptions12%7
Caller ID is easily spoofed, so these figures reflect the number shown on caller ID, not the caller's true location – an area code alone never identifies a caller. The FTC does not verify the facts in these complaints.
Which prefixes and exchanges belong to area code 557?
2% assigned to a telco
- 100% Landline
- 0% Wireless
- 0% Unknown
of 15 | ||
| Prefix | Usage | Carrier |
|---|---|---|
| (557)200- | Landline | Onvoy |
| (557)201- | Landline | Teleport Communications America |
| (557)202- | Landline | Comcast Ip Phone |
| (557)273- | Landline | Teleport Communications America |
| (557)362- | Landline | Teleport Communications America |
| (557)454- | Landline | Teleport Communications America |
| (557)467- | Landline | Onvoy |
| (557)500- | Landline | Onvoy Spectrum |
| (557)653- | Landline | Teleport Communications America |
| (557)747- | Landline | Teleport Communications America |
| (557)777- | Landline | Terra Nova Telecom |
| (557)888- | Landline | Terra Nova Telecom |
| (557)953- | Landline | Teleport Communications America |
| (557)996- | Landline | Teleport Communications America |
| (557)999- | Landline | Wiretap Telecom |
| No prefixes match “”. | ||
Frequently Asked Questions about the 557 Area Code
Who called me from a 557 number?
0% of its assigned prefixes are wireless. Largest holders: Teleport Communications America, Onvoy, and Terra Nova Telecom.
Is 557 a scam area code?
Carriers hold 2% of its possible prefixes.
Why do I keep getting calls from the 557 area code?
Complaints rose 38% on the prior period.
Should I answer an unknown 557 number?
40% of its FTC complaints were robocalls. Its most-reported specific subject was "Calls pretending to be government, businesses, or family and friends", at 18%.
How do I block calls from the 557 area code?
Blocking 557 still lets 314 numbers through.
Where is area code 557?
557 covers 91 cities and 1,094,218 residents in St. Louis County and St. Louis city, Missouri.
When did area code 557 go into service?
557 went into service on August 12, 2022. It was added to overlay 314.
Is 557 a real area code?
Yes: 6 carriers hold its prefixes, serving 91 cities in St. Louis County and St. Louis city.
What timezone is the 557 area code in?
557 is on Central Time (CT).
How do I call a 557 number from abroad?
Dial +1 557, then the number.