The county also borders Uganda via Migingo Island in Lake Victoria. The county is headquartered by Migori town, which is also its largest town. The Kenya National Census of 2019 indicated that Migori County had a population of 1,116,436 compared to 917, 170 in 2009 Census. Migori County is located in the sugar belt wetlands of Western Kenya and is mostly at the heart of the African tropics. However, the county enjoys a pleasant climate because of high altitude which modifies the climate alongside the cool breeze from Lake Victoria.
Demographically, Migori County is the most diverse region of Nyanza after Kisumu. The inhabitants include AbaSuba people, Joluo, Abakuria, Abagusii, Abaluhya, Somalis, Indians, Arabs, Agikuyu and Nubians.