Rockville, Maryland
Area codes 227, 240, 301 · Population: 61,209
Eastern (ET)
Maryland
Pop. 61,209
Area Codes Serving Rockville
About Rockville, Maryland
Rockville is a city in Maryland that is served by area codes 227, 240, 301. The city has a population of approximately 61,209 residents and is located in the Eastern Time Zone.