What city is ZIP code 20101?

20101 is a Dulles, Virginia ZIP code.

What county is 20101 in?

ZIP code 20101 is in Loudoun County, Virginia.

What time zone is ZIP code 20101 in?

20101 is in the Eastern Time zone (America/New_York).

What area code is 20101?

Phone numbers in ZIP code 20101 use area code 571.

Can I use 20101 for a street address?

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

What ZIP codes are near 20101?

The nearest ZIP codes to 20101 are 20189 (Dulles, 0.5 miles), 20103 (Dulles, 0.6 miles), 20163 (Sterling, 0.8 miles) and 20167 (Sterling, 0.8 miles).

ZIP code 20101

Where is ZIP code 20101?

Dulles, Virginia

Loudoun County · Unique ZIP code

ZIP code 20101 belongs to Dulles, Virginia in Loudoun County. 20101 is a unique ZIP code assigned to a single organization (Dulles P & D Center) that gets a lot of mail. It is in the Eastern Time zone and uses area code 571. The closest ZIP codes are 20189 (Dulles, 0.5 mi north), 20103 (Dulles, 0.6 mi southwest) and 20163 (Sterling, 0.8 mi east).

ZIP code	20101
Type	Unique ZIP code for a single organization
Status	Active
City	Dulles
State	Virginia (VA)
County	Loudoun County
Time zone	Eastern Time · now
Area code	571
Coordinates	39.0021, -77.4421 map
3-digit prefix	201

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 20101

ZIP code	City	Distance	Type
20189	Dulles, VA	0.5 mi N	Standard
20103	Dulles, VA	0.6 mi SW	Unique
20163	Sterling, VA	0.8 mi E	PO Box only
20167	Sterling, VA	0.8 mi E	PO Box only
20166	Sterling, VA	2.2 mi SW	Standard
20164	Sterling, VA	2.7 mi NE	Standard
20147	Ashburn, VA	3.2 mi NW	Standard
20172	Herndon, VA	3.8 mi SE	PO Box only
22095	Herndon, VA	3.8 mi SE	Unique
20149	Ashburn, VA	3.8 mi NW	Unique
20170	Herndon, VA	4.2 mi E	Standard
20165	Sterling, VA	4.3 mi NE	Standard

Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 20101 or measure the distance to another ZIP code.

How to address mail to 20101

JANE SMITH
123 MAIN ST
DULLES VA 20101

Put the city, the two-letter state code and the ZIP code on the last line. Adding the 4-digit ZIP+4 code (20101-XXXX) helps mail sort faster but isn’t required.

Other ZIP codes in Dulles, VA

All Dulles ZIP codes with population and income →

Questions

What city is ZIP code 20101?: 20101 is a Dulles, Virginia ZIP code.
What county is 20101 in?: ZIP code 20101 is in Loudoun County, Virginia.
What time zone is ZIP code 20101 in?: 20101 is in the Eastern Time zone (America/New_York).
What area code is 20101?: Phone numbers in ZIP code 20101 use area code 571.
Can I use 20101 for a street address?: Only for mail to the organization it is assigned to. Other addresses in Dulles use a standard ZIP code.
What ZIP codes are near 20101?: The nearest ZIP codes to 20101 are 20189 (Dulles, 0.5 miles), 20103 (Dulles, 0.6 miles), 20163 (Sterling, 0.8 miles) and 20167 (Sterling, 0.8 miles).