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Maryland Heights, MO Area Codes
Maryland Heights, Missouri (population 27,559) uses area codes 314 and 557.
Maryland Heights has no telephone exchange of its own in NANPA records; it is served by the Creve Coeur exchange about 6.6 km away.
Carriers with Maryland Heights numbers
57 prefixes are assigned to the Creve Coeur exchange: 18% mobile, 39% VoIP and cable, 44% landline.
| Carrier | Prefixes |
|---|---|
| AT&T (Southwestern Bell) | 19 |
| Onvoy (Sinch) | 9 |
| T-Mobile | 6 |
| Verizon Business (MCImetro) | 5 |
| AT&T Mobility | 4 |
| AT&T (Teleport) | 4 |
| Lumen (Level 3) | 3 |
| Paetec Itel | 2 |
Area codes used in Maryland Heights
| Area code | Prefixes serving Maryland Heights | Main carriers in this code |
|---|---|---|
| 314 | 51 | AT&T (Southwestern Bell), AT&T Mobility, T-Mobile |
| 557 | 6 | AT&T Mobility, Onvoy (Sinch), AT&T (Teleport) |
Maryland Heights phone number prefixes
Numbers starting with these first six digits were originally assigned to the Creve Coeur exchange.
314-205AT&T (Southwestern Bell)314-220T-Mobile314-228Onvoy (Sinch)314-275AT&T (Southwestern Bell)314-317AT&T (Southwestern Bell)314-336Paetec Itel314-343AT&T Mobility314-370Charter Ip Enabled Services314-384Nuso314-392Verizon Business (MCImetro)314-415AT&T (Southwestern Bell)314-434AT&T (Southwestern Bell)314-439AT&T (Southwestern Bell)314-453AT&T (Southwestern Bell)314-469AT&T (Southwestern Bell)314-485Lumen (Level 3)314-486T-Mobile314-514AT&T (Southwestern Bell)314-515AT&T (Southwestern Bell)314-523AT&T (Southwestern Bell)314-529AT&T (Southwestern Bell)314-542AT&T (Southwestern Bell)314-548At&T - Local314-568T-Mobile314-575T-Mobile314-576AT&T (Southwestern Bell)314-579AT&T (Southwestern Bell)314-581T-Mobile314-590Paetec Itel314-594Lumen (Level 3)314-624AT&T Mobility314-628AT&T (Southwestern Bell)314-648AT&T Mobility314-673Onvoy (Sinch)314-674Verizon Business (MCImetro)314-682AT&T (Teleport)314-713T-Mobile314-720Lumen (Level 3)314-744Onvoy (Sinch)314-786Verizon Business (MCImetro)314-789Fractel314-796AT&T (Teleport)314-819Verizon Business (MCImetro)314-844AT&T (Southwestern Bell)314-851AT&T (Southwestern Bell)314-864AT&T (Teleport)314-878AT&T (Southwestern Bell)314-886Onvoy (Sinch)314-936Onvoy (Sinch)314-985Verizon Business (MCImetro)314-998Onvoy (Sinch)557-220AT&T Mobility557-224AT&T (Teleport)557-226Onvoy (Sinch)557-257Onvoy (Sinch)557-444Onvoy (Sinch)557-777Terra Nova Telecom
Nearby cities in area code 314
- St. Louis
- Oakville
- University City
- Kirkwood
- Mehlville
- Webster Groves
- Arnold
- Affton
- Creve Coeur
- Spanish Lake
- Concord
- Ferguson
Questions
- What is the area code for Maryland Heights, MO?
- Maryland Heights uses 2 area codes: 314 and 557. They overlay each other, so all of them cover the whole city and you dial 10 digits for local calls.
- What time zone is Maryland Heights in?
- Maryland Heights is in the Central time zone.