Charlton, Maryland
No ZIP code carries the name of Charlton, Maryland, in Washington County; the nearest ZIP code is 21722, in area code 301, with overlays 227 and 240.
- Nearest ZIP
- 21722
- Area codes
- 301, 227, 240
- County
- Washington County
- State
- Maryland
- Time zone
- Eastern Time
- Coordinates
- 39.6344, -77.8944
Nearest ZIP codes to Charlton
This is the ZIP code nearest to Charlton, each listed with the post office it is named after.
| ZIP code | Post office | County | Area codes |
|---|---|---|---|
| 21722 | Clear Spring | Washington County | 301, 227, 240 |
Area codes for Charlton
- 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
Charlton is in the Eastern Time zone.
Towns near Charlton
- Pinesburg3.4 km (2.1 mi)
- Clear Spring3.6 km (2.2 mi)
- Big Spring4 km (2.5 mi)
- Wilson-Conococheague6.1 km (3.8 mi)
- Kemps Mill6.9 km (4.3 mi)
- Williamsport8.7 km (5.4 mi)
- Fairview9.7 km (6.0 mi)
- Indian Springs9.8 km (6.1 mi)
Local numbers in area code 301
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- (301) 723-7731Cumberland, MD$99View & buy
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