Siaya County is one of the counties in the former Nyanza Province in the southwest part of Kenya.

It is bordered by Busia County to the north, Kakamega County and Vihiga County's to the northeast and Kisumu County to the southeast. It shares a water border with Homa Bay County which is located south of Siaya County.

The total area of the county is approximately 2,496.1 km². The county lies between latitude 0° 26’ to 0° 18’ north and longitude 33° 58’ east and 34° 33’ west. Siaya has been split up into six new districts.

Under the new constitution, the role of districts are still unclear as much of administrative authority is being transferred to the county. The capital is Siaya, even though the largest town is Bondo.

Demographics

The population in the year 2009 was 842,304.

Administrative divisions

Government

In the 2007 elections the county, then district, had three constituencies: Alego Constituency, Gem, and Ugenya.

As of 2013, Siaya County was made up of six constituencies namely Alego, Bondo, Gem, Rarienda, Ugenya, and Ugunja.[

Elections

At the 2007 parliamentary elections all three seats were won by Orange Democratic Movement.

Governors

Villages and settlements

Ujwang'a,a village in sihay sublocation North East ugenya location East Ugenya Ward of Siaya county

Anyieka

Nyamninia, a village in Yala division of Siaya County

Nyang'oma Kogelo, a village in Karemo Division of Siaya County

Bondo Kolalo, a village in Sihay Division, Ugenya sub county of Siaya County

Sigul, a village in Sihay Division, Ugenya sub county of Siaya County

Nyagondo,a village in Wagai Division,Gem sub county.

Ethnicity

Majority of the population consist of members of the Luo tribe.