Upon the transfer the West Pokot was combined with South Turkana District to form Turkana District of Naivasha Province.
In 1918, South Turkana came into direct military administration and West Suk (West Pokot) was established as a district of Naivasha Province, then Kerio Province in 1921, and under the newly created Turkana Province from 1929.
In 1941, West Suk was transferred to Rift Valley Province, and administered jointly with Trans Nzoia District.
The three districts also had a population that was predominantly considered rural with whole population of Pokot Central and Pokot North being rural, and the population 138,367 of 181,063 in West Pokot District considered rural.
This effectively led to the creation of West Pokot County.