The station is on a raised viaduct running in a roughly north-south direction. There are two exits, the north exit (北口) and south exit (南口).[2] Both exits have ticket vending machines and toilets; however, the north exit has a Midori no Madoguchi staffed ticket office and escalators to the platforms. Luggage lockers are available at the south exit.[2]
Platforms
The station has two island platforms with two tracks on either side of each platform. Platforms 1 and 4 (the outermost tracks) serve the Keihin-Tohoku Line, while platforms 2 and 3 (the inner tracks) are used for Yamanote Line trains.[2] This platform arrangement allows for easy cross-platform interchanges so that passengers may transfer between lines in the same direction by walking across the platform.
The Yamanote Line platforms are equipped with chest-high platform edge doors, installed in March 2014.[3]
History
The station opened on 1 November 1925.[1] Waist-high platform edge doors were installed on the Yamanote Line platforms in March 2014, scheduled to be brought into operation from 10 May.[3] From 14 March 2015, rapid services on the Keihin-Tohoku Line began serving the station on weekends and national holidays only.[4]
Station numbering was introduced in 2016 with Okachimachi being assigned station numbers JY04 for the Yamanote line and JK29 for the Keihin-Tōhoku line.[5][6]
Passenger statistics
In fiscal 2013, the station was used by an average of 67,593 passengers daily (boarding passengers only), making it the 64th-busiest station operated by JR East.[7] The daily average passenger figures (boarding passengers only) in previous years are as shown below.
Okachimachi Station is in the centre of a busy commercial district stretching southwards from Ueno Station. Particularly well-known is Ameya-Yokochō ("Ameyoko"), a busy shopping street dominated by small market-style stalls selling a wide variety of wares. Ameyoko runs parallel to the railway line and includes a large market under the railway tracks.
The station is also very near Ueno Park's south entrance.
^ ab御徒町駅山手線ホームに可動式ホーム柵設置 [Platform edge doors installed on Yamanote Line platforms at Okachimachi Station]. Japan Railfan Magazine Online (in Japanese). Japan: Koyusha Co., Ltd. 23 March 2014. Retrieved 24 March 2014.
^"２０１５年３月 ダイヤ改正について" [Information regarding the March 2015 timetable amendment] (PDF). East Japan Railway Company. 19 December 2014. p. 10. Retrieved 16 April 2015.
^"⾸都圏エリアへ 「駅ナンバリング」を導⼊します" [Introduce “station numbering” to the Tokyo metropolitan area] (PDF). jreast.co.jp (in Japanese). 6 April 2016. Archived from the original(PDF) on 7 December 2022. Retrieved 7 January 2023.
^Kusamachi, Yoshikazu (7 April 2016). "JA・JK・JT・AKB…JR東日本、首都圏で駅ナンバリングなど導入へ" [JA, JK, JT, AKB … JR East to introduce station numbering in the Tokyo metropolitan area]. Response Automotive Media (in Japanese). Archived from the original on 6 August 2022. Retrieved 7 January 2023.
^ ab各駅の乗車人員 （2013年度） [Station passenger figures (Fiscal 2013)] (in Japanese). Japan: East Japan Railway Company. Retrieved 24 January 2015.
^各駅の乗車人員 （2000年度） [Station passenger figures (Fiscal 2000)] (in Japanese). Japan: East Japan Railway Company. Retrieved 24 January 2015.
^各駅の乗車人員 （2005年度） [Station passenger figures (Fiscal 2005)] (in Japanese). Japan: East Japan Railway Company. Retrieved 24 January 2015.
^各駅の乗車人員 （2010年度） [Station passenger figures (Fiscal 2010)] (in Japanese). Japan: East Japan Railway Company. Retrieved 24 January 2015.
^各駅の乗車人員 （2011年度） [Station passenger figures (Fiscal 2011)] (in Japanese). Japan: East Japan Railway Company. Retrieved 24 January 2015.
^各駅の乗車人員 （2012年度） [Station passenger figures (Fiscal 2012)] (in Japanese). Japan: East Japan Railway Company. Retrieved 24 January 2015.
