Gaithersburg, Maryland
Gaithersburg, Maryland, in Montgomery County, has ZIP codes 20877, 20878, 20879, 20882, 20883, 20884 and others, and area code 301, with overlays 227 and 240.
- ZIP codes
- 20877, 20878, 20879, 20882 …
- Area codes
- 301, 227, 240
- County
- Montgomery County
- State
- Maryland
- Time zone
- Eastern Time
- Coordinates
- 39.1517, -77.1965
ZIP codes in Gaithersburg
| ZIP code | Post office | County | Area codes |
|---|---|---|---|
| 20877 | Gaithersburg | Montgomery County | 301, 227, 240 |
| 20878 | Gaithersburg | Montgomery County | 301, 227, 240 |
| 20879 | Gaithersburg | Montgomery County | 301, 227, 240 |
| 20882 | Gaithersburg | Montgomery County | 301, 227, 240 |
| 20883* | Gaithersburg | Montgomery County | 301, 227, 240 |
| 20884* | Gaithersburg | Montgomery County | 301, 227, 240 |
| 20885* | Gaithersburg | Montgomery County | 301, 227, 240 |
| 20898* | Gaithersburg | Montgomery County | 301, 227, 240 |
| 20899 | Gaithersburg | 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 Gaithersburg
- 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
Gaithersburg is in the Eastern Time zone.
Towns near Gaithersburg
- Suburb Maryland Fac1.3 km (0.8 mi)
- Flower Hill2.1 km (1.3 mi)
- Washington Grove2.5 km (1.6 mi)
- Montgomery Village2.8 km (1.7 mi)
- Germantown3.9 km (2.4 mi)
- Montgomery4.2 km (2.6 mi)
- Derwood4.6 km (2.9 mi)
- Redland4.9 km (3.0 mi)
Local numbers in area code 301
Looking for a phone number with a Gaithersburg 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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