JR East has expanded the station numbering on Chūō Line (中央本線) to the section between Hatsukari (初狩) and Kobuchizawa (小淵沢) stations by March 23, 2020, which is already performed between Sagamiko (相模湖) and Ōtsuki (大月) stations.

The numbering (CO33 – 51), which is the serial number from Otsuki Station, is posted on the station sign on the platforms. in addition, the station name is written in 4 languages (Japanese, English, Chinese, Korean).