Sub-Counties are the decentralized units through which
County governments of Kenya will provide functions and services. Except for the parts which fall under urban areas, Sub-Counties will coincide with the
constituencies created under article 89 of the
Constitution of Kenya. Sub-Counties will be headed by a sub-county administrator, appointed by a County Public Service Board. Under the former Constitution of Kenya, the
provinces of
Kenya were subdivided into a number of districts (
wilaya). In line with restructuring the national administration to fit with the devolved government system brought in by the 2010 Constitution, that came into full effect following elections in March 2013, the 8 provinces and their administrators and districts were replaced by County Commissioners at the
county level, while former districts existing as of 2013 were re-organised as Sub-Counties, and had Deputy Commissioners appointed over them.