Not all Falls Church mailing addresses are located within city limits--some are in Fairfax County (like Merrifield, Seven Corners, and Bailey's Crossroads). To determine if an address is within the City, please use the following tools.

United States Postal Service Database
Go to this website, enter your address, and click "Find." When the results are provided click to expand "Show Mailing Industry Details." This option will show your "County."

Assessment Property Finder
Best used when verifying single family residences, this database is maintained by the city’s Real Estate Assessment Office. While it comprises the majority of addresses within the city, there are exceptions, especially for commercial properties like strip malls and multiple-building apartment complexes.

Street Map
This street map can help identify streets within the city limits.

General Rules for City Addresses
There are exceptions, but generally:

• The primary Falls Church city zip code is 22046, with a few properties in 22042, 22044, and 22205. Zip code 22040 is used for post office boxes.
• Most residential addresses in the city have 3 digits.
• Most addresses 1400 and over are out of the City, although there are a few exceptions where addressing from Arlington or Fairfax continues into the City, giving numbers mostly in the 6000 series.
• Addresses indicated on Leesburg Pike, Route 7, Arlington Boulevard, Route 50, Lee Highway, or Route 29 are likely not within the City of Falls Church.