Pentagon City is an unincorporated neighborhood (called an "urban village") located in the southeast portion of Arlington County, Virginia, near the Pentagon and Arlington National Cemetery. Due to its proximity to Washington, D.C., this community of residential, office, and retail complexes is a major tourist stop.

Pentagon City is less than a mile from the Potomac River, which separates the Commonwealth of Virginia from Washington, D.C. It is located on the Blue and Yellow Lines of the Washington DC Metrorail, and the Pentagon City Metro station is one of the busiest in the Metrorail system during peak and off-peak hours. It is also one of the few metro stations to have SmarTrip-only lanes.

The Pentagon, whose parking lots span both sides of nearby Shirley Memorial Highway (I-395), on the North edge. The neighborhood of Crystal City borders Pentagon City to the East along Jefferson Davis Highway (Route 1), separating Pentagon City from National Airport. To the South is the neighborhood of Aurora Highlands and the Virginia Highlands Park. To the West is the neighborhood of Arlington Ridge. Washington Boulevard (Route 27), Arlington Boulevard (Route 50), Columbia Pike (Route 244), and Route 110 are nearby major thoroughfares.

Within Pentagon City there are many high-rise luxury apartments and condos. Around the Fashion Centre Mall complex are several apartment buildings including The Metropolitan at Pentagon Row, Pentagon Row, and Park View. Across from the Pentagon City Mall and Costco is the four-story Southampton Condominium townhouse community. Also on that block are Claridge House, and Potomac Center Genesis Care; both residences for retired as well as disabled residents.

There is an open eight phase construction site next door to Costco on Fern St, where the new Metropolitan Park development is being constructed. Kettler, real-estate development and property management company, razed warehouses that were a portion of an older industrial park for the project. The first phase of the project, completed in late 2007, consisted of The Gramercy at Metropolitan Park high-end rental apartments. Phase two of the project is scheduled for completion in late 2009 and consists of The Millennium at Metropolitan Park, a second high-end rental apartments. Both phases were architecturally planned by Robert A.M. Stern and include ground floor retail spaces suitable for any use. A two-and-a-half-acre park, with commissioned art, is also being constructed at the center of the project.

Virginia Highlands Park, located immediately south of the central retail area, provides a lush green space as well as basketball, tennis, soccer, and softball/baseball facilities. Adjacent to the park are the Aurora Hills branch of the Arlington Public Library system and a firehouse. The suburban neighborhood of Aurora Hills, which consists primarily of single-family detached housing, extends due south of Pentagon City.

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