Fort Lewis, Washington

Fort Lewis is a census-designated place (CDP) and United States Army post in Pierce County, Washington, United States. As of the 2000 census, the base had a total population of 19,089. The principal Fort Lewis maneuver units are U.S. I Corps, 3rd Brigade, 4th Brigade and 5th Brigade 2nd Infantry Division; all of which are constituted as Stryker brigades. It is also home to 17th Fires Brigade, 62nd Medical Brigade, the 593rd Sustainment Brigade, the 555th engineer Brigade, the 42nd Military Police Brigade, 11th Signal Brigade, the I Corps NCO Academy, Headquarters, Western Region Cadet Command, the 1st Personnel Support Group, 1st Special Forces Group (Airborne), 2d Battalion, 75th Ranger Regiment, and Headquarters, 5th army (West).

Fort Lewis has more than 25,000 soldiers and civilian workers. The post supports 120,000(+) retirees and more than 29,000 family members living both on and off post. Fort Lewis proper contains 86,000 acres (350 km²); the Yakima Training Center covers 324,000 acres (1,310 km²).

Part of Forces Command, Fort Lewis is the home of I Corps and has been since 1981. It is one of 15 US power projection platforms. The Corps' primary focus is Pacific Rim. As a result, I Corps has a close, ongoing relationship with Pacific Command.