Nyeri County is one of the 47 counties in Kenya and is located in the central region of the country. It covers an area of 3,337.2 Km2 and is situated between longitudes 36038” east and 37020”east and between the equator and latitude 00 380 south. Nyeri County borders Laikipia County to the north, Kirinyaga County to the east, Murang’a County to the south, Nyandarua County to the west and Meru County to the northeast.
Located only 150km North of Kenya's capital city Nairobi, Nyeri County is strategically positioned to connects urban centers within Central Kenya to the country's main international airport in Nairobi and sea port in Mombasa.
The county experiences equatorial rainfall due to its location within the highland zone of Kenya. The long rains occur from March to May while the short rains come in October to December, but occasionally this pattern is disrupted by abrupt and adverse changes in climatic conditions. The annual rainfall ranges between 1,200mm-1,600mm during the long rains and 500mm-1,500mm during the short rains. In terms of altitude, the county lies between 3,076 meters and 5,199 meters above sea level and registers monthly mean temperature ranging from 12.8ºC to 20.8ºC.