The list below includes the cities that the US Post Office accepts for ZIP code 20566. The preferred city may not be the city in which the ZIP is located. The city for 20566 is usually the name of the main post office. When mailing your package or letter, always include the preferred or acceptable cities. Using any city in the list of unacceptable cities may result in delays.
ZIP code 20566 is located in central District of Columbia and covers an extremely small land area compared to other ZIP codes in the United States.
For more information, see Washington, DC population.
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