Kirinyaga County covers an area of 1,478.1 square kilometres and lies between 1,158 metres and 5,380 metres above sea level in the South and at the Peak of Mt. Kenya respectively. It is endowed with a forest cover of 350.7 Km2 and is inhabited by a variety of wildlife including elephants, buffaloes, monkeys, bushbucks and colourful birds while the lower parts of the forest zone provide grazing land for livestock. The county has six major rivers which drain into the Tana River.
Kirinyaga county is an agrarian county that grows some of the best coffee in the world, tea and best aromatic rice in the East Africa region. Moreover, the county boasts of agricultural exports such as horticulture and macadamia.