Nyahururu (formerly known as Thomson's Falls) is a town in Kenya, lying north east of Nakuru. The town derives its name from the Maasai word e-naiwurruwurr, meaning waterfall and/or windy or place of storms. It is located in Laikipia County. Despite this, Nyahururu formerly functioned as the administrative capital of Nyandarua County, before it became a county, until the headquarters was shifted to Ol Kalou. There have been calls for a reversal. The town has an urban population of 36,450. The town still continues to be a central economic power of the immediate former district of Nyandarua. For that reason, the town has strong economic ties to the two counties.