What is what area code is 202?

Area code 202 is the telephone area code for [Washington, D.C.], the capital of the United States. It covers the entire district, making it one of the few area codes that cover a single, unified city/district rather than a larger geographic region with multiple cities. Area code 202 was one of the original area codes created in 1947, and it has remained unchanged since then, solely serving the [District of Columbia]. Due to the city's relatively small geographic size and high population density, 202 has never needed to be split or overlaid with another area code.