They live near Eldoret, Kenya, in the highlands of the former Keiyo District, now part of the larger Elgeyo Marakwet County.
Due to drought and famine in the valley, the Keiyos climbed the escarpment and started to settle on the highland east of Uasin Gishu plateau.
The Keiyos are avid long distance marathon runners and have produced elites such as Ezekiel Kemboi, Vivian Cheruiyot.
The Keiyo and Marakwet settled in the present Uasin Gishu plateau, Kerio Valley, and Cherangani Hills.
Due to population growth over time, the Keiyo community gradually moved and settled in urban areas to do work in major urban centers including Eldoret town, where they actively engage in businesses alongside the Marakwets, Nandis, and other non-Kalenjins.
Elgeiyo people speak a Kalenjin/Kutiit language that falls under the Kipsigis - Nandi - Keiyo - Southern Tugen - Cherang'any' cluster.
From the south to the north the clans are Metkei, Kapkwoni, Maoi, Tumeiyo, Kowochi, Mwen, Choop, Morop, Samich, Kapsiro, Kenenei Kipking'wo, Sego, Epke, Chang'ach, Rokocho, Mutei, Maam, Irong', Kaptany, and Kapchemutwa.