Vihiga County is an administrative region in the former Western Province of Kenya whose headquarters are in Mbale, the largest town in the county. The county has a population of 554,622(2009 census) and an area of 563 km2.Formally a district, Vihiga was split from Kakamega District in 1990.In 2019's census, Vihiga was found to have a population of 590, 013, an increase of 35, 391 from the 2009's count.