557 Area Code 🌍☎️
Area Code Profile · Missouri
The 557 area code is located in the state of Missouri and covers 91 cities, serving a total population of approximately 1,052,285. Major cities covered by the 557 area code include St. Louis, Florissant, Chesterfield, Oakville, University City (which represents the most populated areas). There are a total of 39 telephone prefix exchanges in this area code, which support an estimated 390,000 active or assignable phone numbers. These prefix lines are operated by 12 distinct carriers, with St. Louis as the primary rate center location.
Reverse Phone Lookup in St. Louis, Missouri
Unmask unknown callers, verify telemarketing reports, and view detailed owner information for any phone number beginning with area code (557).
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Neighborhood Demographics
Calculated demographics and census summary estimations for area code 557.
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Most recent complaints and comments for phone numbers beginning with 557.
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Cities in the 557 Area Code
The most populous cities in area code 557 are: St. Louis (319,294), Florissant (52,158), Chesterfield (47,484), Oakville (36,143), and University City (35,371).
Other cities in the 557 area code include:
Mehlville, Kirkwood, Maryland Heights, Hazelwood, Webster Groves, Ferguson, Affton, Spanish Lake, Old Jamestown, Creve Coeur, Lemay, Concord, Overland, Clayton, Jennings, St. Ann, Crestwood, Bridgeton, Bellefontaine Neighbors, Town and Country, Berkeley, Richmond Heights, Ladue, Sunset Hills, Des Peres.
| City | Population | % in Area Code |
|---|---|---|
| St. Louis | 319,294 | 100% |
| Florissant | 52,158 | 100% |
| Chesterfield | 47,484 | 21% |
| Oakville | 36,143 | 99% |
| University City | 35,371 | 100% |
| Mehlville | 28,380 | 100% |
| Kirkwood | 27,540 | 99% |
| Maryland Heights | 27,472 | 100% |
| Hazelwood | 25,703 | 100% |
| Webster Groves | 22,995 | 100% |
| Ferguson | 21,203 | 100% |
| Affton | 20,307 | 100% |
| Spanish Lake | 19,650 | 100% |
| Old Jamestown | 19,184 | 100% |
| Creve Coeur | 17,833 | 100% |
| Lemay | 16,645 | 100% |
| Concord | 16,421 | 100% |
| Overland | 16,062 | 100% |
| Clayton | 15,939 | 100% |
| Jennings | 14,712 | 100% |
Showing top 20 of 91 cities.
What Time Zone is Area Code 557?
Central Time Zone
Abbreviation: CT · UTC Offset: UTC-6
The 557 area code lies within the Central Time Zone (CT, UTC-6).
Nearby Area Codes
Phone Prefixes in the 557 Area Code
39 prefixes found · 12 carriers · 7 rate centers
| Prefix | Carrier | Rate Center |
|---|---|---|
| (557) 200 | ONVOY, LLC - MO | LADUE |
| (557) 201 | TELEPORT COMMUNICATIONS AMERICA, LLC - MO | KIRKWOOD |
| (557) 202 | COMCAST IP PHONE, LLC | ST LOUIS |
| (557) 203 | METROPCS, INC. | MEHLVILLE |
| (557) 204 | FIVE9, INC. | ST LOUIS |
| (557) 205 | TELEPORT COMMUNICATIONS AMERICA, LLC - MO | ST LOUIS |
| (557) 206 | TELEPORT COMMUNICATIONS AMERICA, LLC - MO | ST LOUIS |
| (557) 207 | FIVE9, INC. | OAKVILLE |
| (557) 208 | ONVOY, LLC - MO | LADUE |
| (557) 209 | ONVOY, LLC - MO | KIRKWOOD |
| (557) 210 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO | LADUE |
| (557) 212 | METROPCS, INC. | MEHLVILLE |
| (557) 213 | METROPCS, INC. | ST LOUIS |
| (557) 214 | NEW CINGULAR WIRELESS PCS, LLC - IL | ST LOUIS |
| (557) 215 | CALLWORKS CORPORATION | ST LOUIS |
| (557) 216 | TELEPORT COMMUNICATIONS AMERICA, LLC - MO | ST LOUIS |
| (557) 217 | NEW CINGULAR WIRELESS PCS, LLC - IL | SAPPINGTON |
| (557) 218 | NEW CINGULAR WIRELESS PCS, LLC - IL | LADUE |
| (557) 219 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO | LADUE |
| (557) 220 | NEW CINGULAR WIRELESS PCS, LLC - IL | CREVECOEUR |
| (557) 221 | ONVOY, LLC - MO | MEHLVILLE |
| (557) 222 | LEAP TELECOM, LLC | ST LOUIS |
| (557) 223 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO | LADUE |
| (557) 224 | TELEPORT COMMUNICATIONS AMERICA, LLC - MO | CREVECOEUR |
| (557) 225 | NEW CINGULAR WIRELESS PCS, LLC - IL | LADUE |
| (557) 273 | TELEPORT COMMUNICATIONS AMERICA, LLC - MO | ST LOUIS |
| (557) 362 | TELEPORT COMMUNICATIONS AMERICA, LLC - MO | ST LOUIS |
| (557) 454 | TELEPORT COMMUNICATIONS AMERICA, LLC - MO | ST LOUIS |
| (557) 467 | ONVOY, LLC - MO | ST LOUIS |
| (557) 500 | ONVOY SPECTRUM, LLC | ST LOUIS |
| (557) 507 | ONVOY SPECTRUM, LLC | ST LOUIS |
| (557) 557 | ONVOY, LLC - MO | ST LOUIS |
| (557) 653 | TELEPORT COMMUNICATIONS AMERICA, LLC - MO | ST LOUIS |
| (557) 747 | TELEPORT COMMUNICATIONS AMERICA, LLC - MO | ST LOUIS |
| (557) 777 | TERRA NOVA TELECOM INC. | CREVECOEUR |
| (557) 888 | TERRA NOVA TELECOM INC. | KIRKWOOD |
| (557) 953 | TELEPORT COMMUNICATIONS AMERICA, LLC - MO | ST LOUIS |
| (557) 996 | TELEPORT COMMUNICATIONS AMERICA, LLC - MO | ST LOUIS |
| (557) 999 | WIRETAP TELECOM, LLC. | SAPPINGTON |