Ōtaki Station opened on April 1, 1930, as the initial terminal station on the Japanese Government Railway (JGR) Kihara Line. The line was extended on to Fusamoto by August 25, 1933. After World War II, the JGR became the Japanese National Railways (JNR). Scheduled freight operations were discontinued from October 1, 1974. With the division and privatization of the Japan National Railways on April 1, 1987, the station was acquired by the East Japan Railway Company (JR East). On March 24, 1988, the Kihara Line became the Isumi Railway Isumi Line.
From September 1, 2009, the station's signage was changed to reflect its new unofficial name of Dental-Support Ōtaki Station (デンタルサポート大多喜駅, Dentaru-suppōto Ōtaki-eki).[citation needed]
Passenger statistics
In fiscal 2011, the station was used by an average of 380 passengers daily, making it the busiest station on the line.[1]
