Gaithersburg, Maryland
Area codes 227, 240, 301 · Population: 59,933
Eastern (ET)
Maryland
Pop. 59,933
Area Codes Serving Gaithersburg
About Gaithersburg, Maryland
Gaithersburg is a city in Maryland that is served by area codes 227, 240, 301. The city has a population of approximately 59,933 residents and is located in the Eastern Time Zone.