Korhogo is a city in northern Ivory Coast. It is the seat of both Savanes District and Poro Region. It is also a commune and the seat of and a …Korhogo is a city in northern Ivory Coast. It is the seat of both Savanes District and Poro Region. It is also a commune and the seat of and a sub-prefecture of Korhogo Department. In the 2014 census, the city had a population of 243,048, making it the fourth-largest city in the country and the largest in northern Ivory Coast.