Fort Lewis is a census-designated place and U.S. Army post located 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, the 3rd Brigade, 2nd Infantry Division, the 4th Brigade, 2nd Infantry Division, and the the 5th Brigade, 2nd Infantry Division; all of which are constituted as Stryker brigades. It is also home to 62d Medical Brigade, the 593d Corps Support Group, the 555th Maneuver Enhancement Brigade, the 42nd Military Police Brigade, the 51st Signal Battalion, 11th Signal Brigade, the I Corps NCO Academy, Headquarters, Western Region Cadet Command, the 1st Personnel Support Group, 1st Special Forces Group, 2d Battalion, 75th Infantry, Headquarters, 5th Army. Fort Lewis apartments for rent comparison page shows most up to date rent information on Fort Lewis apartments and houses. Rent information is obtained from multiple rental sources but we cannot guarantee their accuracy.