The Kōenji area is accessible by the JR Chūō-Sōbu Line (Kōenji Station) and the Tokyo Metro Marunouchi Line (Shin-Kōenji Station or Higashi-Kōenji Station).
The major roads Waseda Dōri (早稲田通り), Kannana Dōri (環七通り) and Ōme Kaidō (青梅街道) also pass through the suburb.