Kapsowar is a town in Elgeyo-Marakwet County, Kenya. Prior to March 2013, it was located in the former Rift Valley Province. In 1994, Kapsowar became the headquarters of the former Marakwet district.it also hosts the only girls national school in the county.Furthermore, Kapsowar is the proposed headquarters for the Elgeyo Marakwet County. Prior to this, the Marakwet and Keiyo people were collectively grouped into the Elgeiyo-Marakwet District. In 2010, the two districts were again merged into Elgeyo-Marakwet County. The Marakwet number approximately 300,000 and are a part of the Kalenjin family of tribes, which collectively are the second-largest ethnic group in Kenya.