| | Status: | finished |  | Name in kanji: | 西大井 |  | Name in hiragana: | にしおおい |  | Location: | Japan, Tokyo, Shinagawa-ku, Nishioi | 
 Trainlines
 
 Nearby stations
 
 Average daily passengers
 
 | 2000 | 10420 |  | 2001 | 10640 |  | 2002 | 11174 |  | 2003 | 11692 |  | 2004 | 12406 |  | 2005 | 13116 |  | 2006 | 13715 |  | 2007 | 14035 |  | 2008 | 14143 |  | 2009 | 14064 |  | 2010 | 14501 |  | 2011 | 14743 |  | 2012 | 5383 |  | 2013 | 15483 |  | 2014 | 15127 |  | 2015 | 14905 |  | 2016 | 15167 |  | 2017 | 15473 |  | 2018 | 15833 |  | 2019 | 16028 |  | 2020 | 12777 | 
 
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