Where is Area Code 240? | Silver Spring, Frederick
The 240 Area Code is located in the state of Maryland. Area Code 240 is one of the 269 three-digit telephone area codes in the USA. It covers roughly 6,416,999 unique phone numbers and 1,278,183 individuals near the cities of Silver Spring, Frederick, and Mount Rainier.
DA: 49 PA: 2 MOZ Rank: 34