Arlington County, Virginia, street-naming system

This article details the street-naming system of Arlington County, Virginia in the United States.

Although the streets of Arlington County are not laid out on a grid plan, its local streets follow sequential numbered or alphabetic patterns that are both rational and provide address numbering information.

A numbered and alphabetical street-naming scheme suggests that Arlington is or once was laid out on a continuous rectilinear grid plan, which in many parts of the County it is not (although very few parts of the County are laid out using the cul-de-sac type development which is more common in the outer Washington, DC suburbs). Originally, the various communities in the county had independent street-naming conventions. However, when county officials asked the United States Postal Service to place the entire county in a single "Arlington, Virginia" postal area, the USPS refused to do so until the county had a unified addressing system, which the county developed in 1932. For that reason, and also because Arlington contains a number of locations that interrupt the road grid network (including military facilities, parks, golf courses, and limited-access highways), it is common for streets to terminate and continue later on in another location. Arlington now has a policy of adding to the street grid when feasible as part of new development—for example, connections for Quinn Street and Troy Street were recently added to the Master Transportation Plan between Wilson and Clarendon Boulevards.

Arlington Boulevard (U.S. Route 50) bisects Arlington County into northern and southern sections, except for a few streets between Fort Myer Military Reservation and Arlington Boulevard, which are designated north even though they are south of Arlington Boulevard.

East–west streets are designated by an ordinal number followed by a designation as either a street, road, place, or avenue, and a north or south designation. The numbers begin on either side of Arlington Boulevard and increase moving away from it. Therefore, 1st Street North is immediately north of Arlington Boulevard and 1st Street South is immediately south of it.

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