Rockville, Maryland
Rockville, Maryland, in Montgomery County, has ZIP codes 20847, 20848, 20849, 20850, 20851, 20852 and others, and area code 301, with overlays 227 and 240.
- ZIP codes
- 20847, 20848, 20849, 20850 …
- Area codes
- 301, 227, 240
- County
- Montgomery County
- State
- Maryland
- Time zone
- Eastern Time
- Coordinates
- 39.0872, -77.1466
ZIP codes in Rockville
| ZIP code | Post office | County | Area codes |
|---|---|---|---|
| 20847* | Rockville | Montgomery County | 301, 227, 240 |
| 20848* | Rockville | Montgomery County | 301, 227, 240 |
| 20849* | Rockville | Montgomery County | 301, 227, 240 |
| 20850 | Rockville | Montgomery County | 301, 227, 240 |
| 20851 | Rockville | Montgomery County | 301, 227, 240 |
| 20852 | Rockville | Montgomery County | 301, 227, 240 |
| 20853 | Rockville | Montgomery County | 301, 227, 240 |
| 20857* | Rockville | Montgomery County | 301, 227, 240 |
* No mapped delivery area: P.O. boxes or a single organization. Area codes are those of the nearest ZIP code area.
Area codes for Rockville
- 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
Rockville is in the Eastern Time zone.
Towns near Rockville
- Potomac4.6 km (2.9 mi)
- Bethesda5 km (3.1 mi)
- Redland5.1 km (3.2 mi)
- Derwood5.3 km (3.3 mi)
- Aspen Hill5.6 km (3.5 mi)
- North Bethesda6.1 km (3.8 mi)
- Washington Grove6.2 km (3.9 mi)
- Leisure World7 km (4.3 mi)
Local numbers in area code 301
Looking for a phone number with a Rockville area code? These 301 numbers are for sale through Exclusive Digits. Portable to Verizon, AT&T, T-Mobile and all major US carriers.
- (301) 723-7375Cumberland, MDAlso spells PERK$59View & buy
- (301) 723-7724Cumberland, MD$59View & buy
- (301) 723-7729Cumberland, MDAlso spells ESSAY, PRAY$59View & buy
- (301) 723-7738Cumberland, MD$59View & buy
- (301) 723-7762Cumberland, MD$59View & buy
- (301) 723-7763Cumberland, MDAlso spells PROD$59View & buy
- (301) 723-7768Cumberland, MDAlso spells SPOT$59View & buy
- (301) 723-7872Cumberland, MD$59View & buy
- (301) 723-7877Cumberland, MD$59View & buy
- (301) 723-7879Cumberland, MD$59View & buy
- (301) 263-7321Bethesda, MD$69View & buy
- (301) 723-7893Cumberland, MD$79View & buy
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