Komoro Station is served by the Shinano Railway Line and is 22.0 kilometers from the starting point of the line at Karuizawa Station.

From 1926 to 1936, the station was also used by the now defunct Nunobiki Electric Railway(ja).

The station consists of one ground-level side platform and two island platforms serving five tracks, connected to the station building by a footbridge.

The station has a Midori no Madoguchi staffed ticket office.

[3] The Shinano Railway portion of the station was used by 3,167 passengers in Fiscal 2015.