About 235,000 people.

Arlington sits right across the river from Washington, D.C., and is packed with history and important landmarks. It is where you find Arlington National Cemetery and the Pentagon.
You can watch the changing of the guard at the Tomb of the Unknown Soldier, walk the trails along the Potomac River, and see planes land up close near the airport. The city is a short Metro ride from all the museums in Washington.
Arlington National Cemetery is a quiet, respectful place with rolling green hills that honors people who served the country.
Paths along the Potomac River are great for biking and walking, with beautiful views of the water and the city skyline.