Area code 231
The 231 area code belongs to the state of Michigan (MI) and some of the locations covered are Bowie, Frederick, Germantown and more:
| State | Cities in area code 231 | Time Zone |
|---|---|---|
| MI Michigan |
Aspen Hill, Bethesda, Bowie, Chillum, Clinton, Fairland, Fort Washington, Frederick, Gaithersburg, Germantown, Hagerstown, Montgomery Village, Olney, Oxon Hill-Glassmanor, Potomac, Rockville, Silver Spring, St. Charles, Suitland, Wheaton-Glenmont | EASTERN Current time is 06:49:46pm |