Kokosa is one of the woredas in the Oromia Region of Ethiopia. Being part of the Mirab Arsi Zone, Kokosa is bordered on the south and west by the Southern Nations, Nationalities and Peoples Region, on the north by the Kofele, on the northeast by Dodola, and on the southeast by Nensebo. The administrative center of this woreda is Kokosa; other towns include Diki, Gata, Hebano, Hogiso.
The majority of this woreda (95%) consists of undulating plains, with hills, valleys and mountains covering the rest. Rivers include the Genale, Logeta, Webe, Meganamo and Areba. A survey of the land in this woreda shows that 19.5% is arable or cultivable (51% of which was under annual crops), 70% pasture, 7.3% forest, and the remaining 3.2% is considered unusable or other. Ensete is an important food source.
Industry in the woreda includes some mining, some small scale businesses and open markets. There were 16 Farmers Associations with 7640 members and Farmers Service Cooperatives with 254 members. Kokosa has 68 kilometers of road, for an average density of 106 kilometers per 1000 square kilometers. About 48% of the total population has access to drinking water.
The 2007 national census reported a total population for this woreda of 144,549, of whom 70,022 were men and 74,527 were women; 3,224 or 2.23% of its population were urban dwellers. The majority of the inhabitants were Muslim, with 77.49% of the population reporting they observed this belief, while 14.4% of the population said they were Protestant, 4.44% of the population practiced traditional beliefs, and 2.09% practiced Ethiopian Orthodox Christianity.