Geographically, the unique jug-shaped structure of Nandi County is bound by the Equator to the south and extends northwards to latitude 0034’N. The western boundary extends to west. The county’s major area is covered by the Nandi Hills.
Historically, Nandi like other Kalenjin areas was divided into districts known as emotinwek (sing. emet). There were six emotinwek in Nandi which were Wareñg in the north, Mosop in the East, Soiin (also known as Pelkut) in the south-east, Aldai and Chesumei in the west and Em’gwen in the center.
The districts were further divided into divisions known as bororiōsiek (sing. bororiet) which were made up of several villages known as koret.