Ogallah is an unincorporated community in Trego County, Kansas, United States. As of the 2020 census, the population of the community and nearby areas was 28. It is located approximately 7 miles east of WaKeeney. History Ogallah was named for the Oglala Lakota tribe. The post office was established January 27, 1879. Geography Climate The climate in this area is characterized by hot, humid summers and generally mild to cool winters. According to the Köppen Climate Classification system, Ogallah has a humid subtropical climate, abbreviated "Cfa" on climate maps. Demographics For statistical purposes, the United States Census Bureau has defined Ogallah as a census-designated place (CDP). See also Cedar Bluff Reservoir and Cedar Bluff State Park References Further reading External links Trego County maps: Current, Historic, KDOT Unincorporated communities in Trego County, Kansas Unincorporated communities in Kansas