Nyandarua County is a County in the former Central Province of Kenya. Its capital and largest town is Ol Kalou. Formerly the capital was Nyahururu, which is now part of Laikipia County. It has six administrative sub-counties: Kipipiri, Ndaragwa, North Kinangop, Ol Joro Orok, Ol Kalau and South Kinangop. According to the 2019 Kenya Population and Housing Census, the population is 638,289 with a population density of 194/km2

