311 Kearny Ave
Fort Leavenworth, KS 66027
Fort Leavenworth, KS 66027
The Fort Leavenworth Post Office is located in the state of Kansas within Leavenworth County. This location serves 5,742 Fort Leavenworth residents with a median income of $81,658. It's estimated that approximately 9,165 packages pass through this post office each year.