Thika (pronounced [ˈθika]) is an industrial town in Central Province, Kenya, lying on the A2 road 40 km north east of Nairobi, near the confluence of Thika River & Chania River. Thika has a population of 200,000 and is growing rapidly, as is the entire greater Nairobi area. The elevation of Thika is approximately 1631 meters in altitude.