Luannan County spans an area of 1,482.6 square kilometres (572.4 sq mi), and has a population of approximately 508,500, per the 2020 Chinese census.

[3] The area's organizational history dates back to the 740 CE, during the Tang dynasty when the area was incorporated as Macheng County (simplified Chinese: 马城县; traditional Chinese: 馬城縣; pinyin: Mǎchéng Xiàn).

[1][2] The seat of Macheng County was located in the present-day town of Bencheng [zh].

[1] Luannan County spans an area of 1,482.6 square kilometres (572.4 sq mi).

[7] Luannan County has a population of approximately 508,500 people, as per the 2020 Chinese census.

[1] Major crops grown in Luannan County include rice, Carex kobomugi, and peanuts.

[1] Common livestock in Luannan County include dairy cows, chickens, and pigs.