KDOT map of Ellis County (legend)
|Elevation||1,942 ft (592 m)|
|Time zone||UTC-6 (Central (CST))|
|• Summer (DST)||UTC-5 (CDT)|
|GNIS feature ID||475301|
Settlers from Ohio founded Walker in 1872. They likely named the settlement for Robert J. Walker, the 4th Territorial Governor of Kansas. From 1876 to 1878, they were joined by Volga German immigrants and Plattdeutsch-speaking Germans from Ohio and Kentucky who settled in the area.
The first post office in Walker opened in 1873, closed temporarily in 1876, and then reopened in 1878. St. Ann's Church was built and dedicated in 1905. The community's first school was built in 1893, followed by a second building in 1925. The school has since closed but remains in use as a community center.
In 1942, the U.S. Army built Walker Army Airfield one mile northwest of Walker. During World War II, thousands were stationed at the airfield, mostly for training in operation of the Boeing B-29 Superfortress bomber aircraft. The military closed the base in 1946.
Construction of Interstate 70 reached Walker in 1966, passing immediately south of the community.
Walker is located at  It lies approximately 1.5 miles (2.3 km) west of Walker Creek, part of the Smoky Hill River watershed, in the Smoky Hills region of the Great Plains. Walker is immediately north of Interstate 70 roughly 13 miles (21 km) east of Hays, the county seat.(38.8672339, -99.0759271) at an elevation of 1,942 feet (592 m).
Walker Avenue, a paved county road, runs north-south through Walker, intersecting Interstate 70 and U.S. Route 40, which run concurrently east-west, immediately south of town. The old alignment of U.S. 40, now a paved county road, runs northeast-southwest through Walker.
- "US Board on Geographic Names". United States Geological Survey. 2007-10-25. Retrieved 2008-01-31.
- "General Highway Map - Ellis County, Kansas" (PDF). Kansas Department of Transportation. 1978. Retrieved 2010-12-18.
- ZIP Code Lookup
- "Ellis County". Kansas Heritage Project. Fort Hays State University. Retrieved 2014-10-27.
- Heim, Michael (2007). Exploring Kansas Highways. p. 33.
- "Kansas Post Offices, 1828-1961 (archived)". Kansas Historical Society. Archived from the original on October 9, 2013. Retrieved 9 June 2014.
- "U.S. Army and Air Force Wings Over Kansas". Kansas Historical Quarterly. Kansas State Historical Society. 25 (1): 334–360. Spring 1959.
- "2003-2004 Official Transportation Map" (PDF). Kansas Department of Transportation. 2003. Retrieved 2010-12-18.
- "General Highway Map - Ellis County, Kansas" (PDF). Kansas Department of Transportation. 2010-06-01. Retrieved 2010-12-18.
- "Official 1960-61 Kansas Highway Map" (PDF). Kansas Department of Transportation. Retrieved 2010-12-18.
- "UPRR Common Line Names" (PDF). Union Pacific Railroad. Retrieved 2010-10-10.