Its County government headquarters town is Nanyuki. The County lies between latitudes 0° 18” South and 0° 51” North and between longitude 36° 11” and 37° 24’ East. It borders Samburu County to the North, Isiolo County to the North East, Meru County to the East, Nyeri County to the South East, Nyandarua County to the South, Nakuru County to the South West and Baringo County to the West.
Economic activities in the county consist mainly of tourism and agriculture, chiefly grain crops, ranching and greenhouse horticulture.