Worth, MO

ZIP code 64499 is located in Fort Leavenworth, Kansas. This area is home to the United States Disciplinary Barracks, the only maximum-security prison within the Department of Defense. The ZIP code also includes the Fort Leavenworth National Cemetery, where many veterans and their families are laid to rest. Additionally, the area is known for its historic military significance as the oldest active United States Army post west of the Mississippi River.