Located to the south east of Lake Victoria and is bordered by six counties with Narok to the south, Migori to the west, Homa Bay to the north west, Kisumu to the north, Bomet to the south east and Nyamira to the east
Has two rainfall seasons; short (September – November) and long (February – June), of over 1,500mm per annum with temperatures ranging from 16 0C to 27 0C.
Bitumen surface 73km, gravel and earth surface 409km
Population density: 874.7 people per Km2
National percentage: 2.9 per cent
Annual growth rate: 2.75 per cent (2009)
County capital: Kisii Town (proposed)
Constituencies: Bonchari, South Mugirango, Bomachoge, Bobasi, Gucha, Nyaribari Masaba, Nyaribari Chache, Marani and Mosocho
Poverty level: 51 per cent of population live below poverty line
Age dependency ratio: 100:94
Resources: Soapstone, arable land
Financial services: Nearly 10 commercial banks and micro-finance institutions
Main economic activities/industries: Subsistence agriculture, vegetable farming, small-scale trade, dairy farming, tea and coffee growing, commercial businesses and soapstone carvings.
Agricultural products: Tea, coffee, bananas, tomatoes, vegetables, dairy products, maize and sugarcane.
Number of institutions: Primary 1,101, Secondary 363
Enrollment: Primary 273,111, Secondary 60,098
Tertiary: More than 70 (colleges, universities and polytechnics)
Health facilities: Four District Hospitals, sub-district hospitals (9), dispensaries (80), health centres (23), medical clinics(12), nursing homes (2) and others (6)
Notable hospitals: Gucha and Kisii District Hospitals and Tabaka Mission Hospital.