What city is ZIP code 20240?

20240 is a Washington, District of Columbia ZIP code.

What county is 20240 in?

ZIP code 20240 is in District of Columbia, District of Columbia.

What time zone is ZIP code 20240 in?

20240 is in the Eastern Time zone (America/New_York).

What area code is 20240?

Phone numbers in ZIP code 20240 use area codes 202 and 771.

Can I use 20240 for a street address?

Only for mail to the organization it is assigned to. Other addresses in Washington use a standard ZIP code.

What ZIP codes are near 20240?

The nearest ZIP codes to 20240 are 20456 (Washington, 0.1 miles), 20570 (Washington, 0.1 miles), 20431 (Washington, 0.1 miles) and 20435 (Washington, 0.2 miles).

ZIP code 20240

Where is ZIP code 20240?

Washington, District of Columbia

District of Columbia · Unique ZIP code

ZIP code 20240 belongs to Washington, District of Columbia in District of Columbia. 20240 is a unique ZIP code assigned to a single organization (Dept Interior) that gets a lot of mail. It is in the Eastern Time zone and uses area codes 202 and 771. The closest ZIP codes are 20456 (Washington, 0.1 mi northeast), 20570 (Washington, 0.1 mi north) and 20431 (Washington, 0.1 mi northwest).

ZIP code	20240
Type	Unique ZIP code for a single organization
Status	Active
City	Washington
State	District of Columbia (DC)
County	District of Columbia
Time zone	Eastern Time · now
Area codes	202, 771
Coordinates	38.8971, -77.0409 map
3-digit prefix	202

The Census Bureau doesn’t publish population figures for unique ZIP codes because nobody lives at a PO Box or a single organization’s address. For figures about the area, see the nearby standard ZIP codes below.

ZIP codes near 20240

ZIP code	City	Distance	Type
20456	Washington, DC	0.1 mi NE	Unique
20570	Washington, DC	0.1 mi N	Unique
20431	Washington, DC	0.1 mi NW	Unique
20435	Washington, DC	0.2 mi N	Unique
20451	Washington, DC	0.2 mi W	Unique
20555	Washington, DC	0.2 mi N	Unique
20433	Washington, DC	0.2 mi N	Unique
20006	Washington, DC	0.2 mi W	Standard
20506	Washington, DC	0.2 mi NE	Unique
20355	Washington, DC	0.3 mi SE	Unique
20373	Naval Anacost Annex, DC	0.3 mi SE	Unique
20374	Washington Navy Yard, DC	0.3 mi SE	Standard

Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 20240 or measure the distance to another ZIP code.

How to address mail to 20240

JANE SMITH
123 MAIN ST
WASHINGTON DC 20240

Put the city, the two-letter state code and the ZIP code on the last line. Adding the 4-digit ZIP+4 code (20240-XXXX) helps mail sort faster but isn’t required.

Other ZIP codes in Washington, DC

All Washington ZIP codes with population and income →

Questions

What city is ZIP code 20240?: 20240 is a Washington, District of Columbia ZIP code.
What county is 20240 in?: ZIP code 20240 is in District of Columbia, District of Columbia.
What time zone is ZIP code 20240 in?: 20240 is in the Eastern Time zone (America/New_York).
What area code is 20240?: Phone numbers in ZIP code 20240 use area codes 202 and 771.
Can I use 20240 for a street address?: Only for mail to the organization it is assigned to. Other addresses in Washington use a standard ZIP code.
What ZIP codes are near 20240?: The nearest ZIP codes to 20240 are 20456 (Washington, 0.1 miles), 20570 (Washington, 0.1 miles), 20431 (Washington, 0.1 miles) and 20435 (Washington, 0.2 miles).