Fort Leavenworth, Kansas, where great leaders have served, overlooks the Missouri River, on the border between Kansas and Missouri. Fort Leavenworth is located in the heartland of America near the geographical center of the United States. Its campus setting, open green landscape, and hometown friendliness enhance Fort Leavenworth as a historical landmark. Leavenworth Kansas is considered a high cost of living area, due to the close proximity to Kansas City. The base operator's phone number is 913-684-4021 or DSN 312-552-4021.