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Arlington County, Virginia
Arlington is a fully urbanized 26-square-mile county directly across the Potomac from Washington, anchored by the Pentagon, a dense federal and defense-contractor tenant base, and Amazon's HQ2 at National Landing, with Reagan National Airport and the Rosslyn-Ballston Metro corridor structuring where density goes. There is no greenfield left, so every project is redevelopment governed by sector plans and site-plan bonus density, and the real market question is absorbing older office stock that federal downsizing and remote work have left behind.
Open the live Arlington County map →
Arlington County at a glance
- 243,931Population (2025)
- ArlingtonCounty seat
- 26 sq miLand area
- 9,382 / sq miDensity
- $140,160Median household income
- $864,800Median home value
What the live Arlington County map shows
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- School Boundaries: 1
- HUD: 59
- Soils: 44
- Wetlands: 5
- Development News: 2