Lyndon, KS

ZIP code 66451 covers the city of Fort Riley, located in Geary County, Kansas. This area is most notable for being home to Fort Riley Army Base, a historic military installation established in 1853. The base includes landmarks such as the 1st Infantry Division Museum, which showcases the history of the "Big Red One" division. Additionally, the area features outdoor recreational opportunities, including Milford Lake and Milford State Park.