20171-3345 Zip Code

20171-3345 Zip Code is a "Zip Code 5 Plus 4" (ZIP 5+4) ZIP CODE type in the state of Virginia, Herndon City. This Zip Code is assigned to a street address number or a street address range in Herndon, VA - US.

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20171-3345 Area Code is 703/571 and Time Zone is Eastern (GMT -05:00).

Remember you have 2 kinds of blocks: even or odd. In this case, this Zip Code is assigned to Odd numbers in the corresponding block(s)



20171-3345 ZIP Code 5 Plus 4

The U.S. Postal Service introduced an expanded ZIP code system in Herndon named ZIP Code 5 Plus 4, often called "add-on codes" or "add ons" zip code. A ZIP Plus Four Code (ZIP+4) uses the basic Herndon Zip code (20171) plus four additional digits (3345) to identify a geographic segment within the five-digit delivery area, such as a the Dairy Lou DR street block, a group of apartments, an individual high-volume receiver of mail or any other unit that could use an extra identifier to aid in efficient mail sorting and delivery in Virginia.



The zip code 20171-3345, applies to residential houses, business, buildings, and every Herndon City properties with Odd numeration buildings in this range:

3301 - 3321 Dairy Lou DR, Herndon, Virginia - US


20171-3345 in VA MAP

20171-3345 Zip Code 5 Plus 4


20171-3345 Zip Code 5 Plus 4 Highlights

20171-3345 Zip Code Info
City: Herndon
County: Fairfax
State: Virginia (VA)
City Zip Code: 20171
Plus 4 Code: 3345
Street: Dairy Lou DR
Block Range: 3301 - 3321
Numeration Type: Odd
20171-3345 Area Code: 703/571
20171-3345 Time Zone: Eastern (GMT -05:00)