Due to the epidemics that ravaged the workforce of the
Riihimäki–Saint Petersburg railway throughout the 1860s, a field hospital was established in the village of Okeroinen, in the parish of
Hollola, in April 1868. This was prompted by the hospital in
Järvenpää running out of capacity; the Okeroinen hospital was closed in October. A small cabin was built to serve as the station building. In the
interwar period, industry began to prop up in the surroundings of the station, and in 1935, a larger station building was constructed out of leftover materials from the dismantling of the second
Lahti railway station. In the post-war period, Okeroinen briefly held the higher status of a
pysäkki (a station of lower significance, translating to "stop"), but it was demoted to an unstaffed
laiturivaihde in 1967. Freight services at the station ceased in 1968, after which it was demoted to a halt. The station building was dismantled in 1971; its construction materials were once again reused, this time as a recreational home in
Nastola. On 31 May 1992, passenger services were ceased. == References ==