The code the capital recognizes
Few area codes are as tied to one place as 202 is to Washington, D.C.
It has served the District since 1947, and it covers the whole city rather than a slice of it. Associations near Dupont Circle, consultants on K Street and restaurants along 14th Street all put it on their cards for the same reason: people in D.C. trust a number that looks like it belongs downtown. A 202 line on your caller ID starts a conversation on familiar footing.