[1] The district spans an area of 1,326 square kilometres (512 sq mi),[2] and has a population of 800,740 as of 2020.

[4] In 1187, during the Jin dynasty, the area was reorganized as Yongji County (永济县; 永濟縣; Yǒngjì Xiàn).

[4] On February 1, 2002, Fengrun County was upgraded to a district, and absorbed the now-defunct Tangshan New Area (唐山市新区).

[4] In June 2013, Tangshan's municipal government moved the town of Hancheng [zh] from Fengrun District to neighboring Lubei District, and the town of Laozhuangzi [zh] was moved under the jurisdiction of the Tangshan New Technology Development Zone.

[4] In December 2013, the municipal government moved the remainder of Chahe to Fengnan District.

[4] Fengrun District is located within the prefecture-level city of Tangshan, in the eastern part of Hebei province.

[4] This sharp increase can partially be attributed to annexation of additional land by Fengrun District in 2002, between the two censuses.