Mount Briar, Maryland
No ZIP code carries the name of Mount Briar, Maryland, in Washington County; the nearest ZIP codes are 21756, 21779 and 21782, in area code 301, with overlays 227 and 240.
- Nearest ZIP
- 21756, 21779, 21782
- Area codes
- 301, 227, 240
- County
- Washington County
- State
- Maryland
- Time zone
- Eastern Time
- Coordinates
- 39.4426, -77.6873
Nearest ZIP codes to Mount Briar
These are the ZIP codes nearest to Mount Briar, each listed with the post office it is named after.
| ZIP code | Post office | County | Area codes |
|---|---|---|---|
| 21756 | Keedysville | Washington County | 301, 227, 240 |
| 21779 | Rohrersville | Washington County | 301, 227, 240 |
| 21782 | Sharpsburg | Washington County | 301, 227, 240 |
Area codes for Mount Briar
- Area code 301
In service since 1947. Shares its area with 227 and 240. Local calls are dialed with ten digits; dialing 1 plus ten digits also works.
- Area code 227
In service since June 14, 2023. Shares its area with 240 and 301. Local calls are dialed with ten digits; dialing 1 plus ten digits also works.
- Area code 240
In service since June 1, 1997. Shares its area with 227 and 301. Local calls are dialed with ten digits; dialing 1 plus ten digits also works.
Area codes here are matched from telephone rate centers, so a place near a boundary can have local numbers from either side of it.
Time zone
Mount Briar is in the Eastern Time zone.
Towns near Mount Briar
- Keedysville1.6 km (1.0 mi)
- Trego-Rohrersville Station1.8 km (1.1 mi)
- Rohrersville2.5 km (1.6 mi)
- Eakles Mill2.7 km (1.7 mi)
- Gapland5.2 km (3.2 mi)
- Antietam5.2 km (3.2 mi)
- Sharpsburg5.5 km (3.4 mi)
- Brownsville6.7 km (4.2 mi)
Local numbers in area code 301
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