Siaya is a municipality and the capital of Siaya County, Kenya. It is located 74 km northwest of Kisumu. The urban center had a population of 33,153 in 2019. Siaya municipality has five wards: Mjini, Siaya Central, Siaya East, Siaya North and Siaya West. All of them are part of Alego Constituency. With the new constitution, it is now in Siaya County of …Siaya is a municipality and the capital of Siaya County, Kenya. It is located 74 km northwest of Kisumu. The urban center had a population of 33,153 in 2019. Siaya municipality has five wards: Mjini, Siaya Central, Siaya East, Siaya North and Siaya West. All of them are part of Alego Constituency. With the new constitution, it is now in Siaya County of which it is the headquarters.