Area code 557
Where is area code 557?
St. Louis and Crevecoeur, Missouri
Local time: … (Central Time)
557 is a newer area code, in service since August 12, 2022, added on top of 314. See all new area codes.
| State | Missouri |
|---|---|
| Country | United States |
| Main cities | St. Louis and Crevecoeur |
| Time zone | Central Time |
| Overlay area codes | 314 |
| In service since | 2022 (created from 314) |
| Assigned prefixes | 84 |
| Dialing format | (557) XXX-XXXX · +1 557 XXX XXXX from abroad |
Look up a 557 number
Cities and towns in area code 557
Listed by how many phone prefixes (the 3 digits after the area code) are assigned to each place in 557.
- St. Louis, MO (78)
- Crevecoeur, MO (6)
Phone companies in area code 557
The carriers that hold the most 557 prefixes. People can move their number to another carrier, so this shows who first issued a number, not who serves it today.
| Prefixes | Carrier |
|---|---|
| 23 | New Cingular Wireless PCS (AT&T) |
| 19 | Onvoy |
| 15 | Teleport Communications America |
| 8 | Verizon Wireless |
| 3 | Onvoy Spectrum (Charter Spectrum) |
| 2 | T-Mobile USA |
| 2 | Five9 |
| 2 | Terra Nova Telecom |
All 84 prefixes in area code 557
Pick the 3 digits after the area code to see that prefix’s city and carrier.
- 200
- 201
- 202
- 203
- 204
- 205
- 206
- 207
- 208
- 209
- 210
- 212
- 213
- 214
- 215
- 216
- 217
- 218
- 219
- 220
- 221
- 222
- 223
- 224
- 225
- 226
- 227
- 228
- 229
- 230
- 231
- 232
- 233
- 234
- 235
- 236
- 237
- 238
- 239
- 240
- 241
- 242
- 243
- 244
- 245
- 246
- 247
- 248
- 249
- 250
- 251
- 252
- 253
- 254
- 255
- 256
- 257
- 258
- 259
- 260
- 261
- 262
- 263
- 264
- 265
- 273
- 333
- 362
- 444
- 454
- 467
- 500
- 507
- 557
- 567
- 653
- 666
- 747
- 777
- 880
- 888
- 953
- 996
- 999
Area codes that overlay 557
Questions
- Where is area code 557?
- Area code 557 is in Missouri. It serves St. Louis and Crevecoeur.
- What time zone is area code 557 in?
- Area code 557 uses Central Time.
- What area codes overlay 557?
- 314 serves the same area as 557. New numbers in the area can get any of these codes, which is why local calls need all 10 digits.
- Is a call from area code 557 a scam?
- The area code alone doesn’t tell you. Most calls from 557 are ordinary local calls, but scammers can fake (“spoof”) any number. If you don’t recognize a 557 number, let it go to voicemail.
- When did area code 557 start?
- 557 went into service in 2022. It was created from area code 314.
- Can a 557 number be outside Missouri?
- Yes. People keep their numbers when they move and when they switch to mobile or internet phone services, so a 557 caller can be anywhere.
Other area codes in Missouri
| Area code | Main cities |
|---|---|
| 235 | Birch Tree, Cape Girardeau and Columbia |
| 417 | Springfield, Joplin and Branson |
| 573 | Columbia, Jefferson City and Cape Girardeau |
| 636 | St. Peters, St. Charles and Chesterfield |
| 660 | Sedalia, Kirksville and Warrensburg |
| 816 | Kansas City, St. Joseph and Lee's Summit |
| 975 | Kansas City, Blue Springs and Adrian |