It has the highest population density in Seoul, with 619,509 people living in the area of 35.44 km².

The sixteen administrative neighborhoods comprising Dobong-dong, Chang-dong, Wolgye-dong, Gongneung-dong, Hagye-dong, Junggye-dong, and Sanggye-dong became a part of the new Nowon District.

[2] Nowon District (and Seoul) is bordered by the mountains Suraksan and Bukhansan, on the northeast.

Kim Seong-hwan of the Democratic Party had been the mayor of the district from July 2010 to February 2018, when Kim resigned to run for the by-election of a National Assembly seat held in the district, which was vacated by Ahn Cheol-soo's resignation.

Kim's bid was successful and the mayoral office is succeeded to Oh Seung-rok, also a member of Democratic Party.