ZIP Codes:
20001,
20002,
20003,
20004,
20005,
20006,
20007,
20008,
20009,
20010,
20011,
20012,
20015,
20016,
20017,
20018,
20019,
20020,
20024,
20032,
20036,
20037,
20045,
20052,
20053,
20057,
20064,
20202,
20204,
20228,
20230,
20240,
20245,
20260,
20307,
20317,
20319,
20373,
20390,
20405,
20418,
20427,
20506,
20510,
20520,
20535,
20540,
20551,
20553,
20560,
20565,
20566,
20593