Olney, MD Area Codes
Olney is served by area codes 227, 240 and 301. It is in Maryland, Montgomery County. About 25,553 people live in its 2 ZIP codes.
| Field | Value |
|---|---|
| Area code(s) | 227, 240, 301 |
| State / province | Maryland |
| County | Montgomery County |
| Population | 25,553 |
| ZIP codes | 2 |
| Time zone | Eastern |
| Coordinates | 39.1528, -77.0725 |
What area code is Olney in?
| Area code | Main state | Population covered | Overlap |
|---|---|---|---|
| 227 | Maryland | 2,624,790 | Yes |
| 240 | Maryland | 2,823,102 | — |
| 301 | Maryland | 2,823,102 | Yes |
ZIP codes in the code footprint
Nearby towns and their area codes
Derwood 227, 240, 301Rockville 227, 240, 301Gaithersburg 227, 240, 301Clarksville 410, 443, 667Montgomery Village 227, 240, 301Burtonsville 227, 240, 301Kensington 227, 240, 301Potomac 227, 240, 301
How to dial
Dial 227 + 7 digits for a number in Olney, or +1 227 ... from abroad. Ten-digit dialling is required everywhere in the North American Numbering Plan.