Biyang County is a county located within the jurisdiction of Zhumadian city in the southern region of Henan province, China. It covers a total land area of 2,682 square kilometers (approximately 1,036 square miles).
The county shares borders with several neighboring regions, including Queshan to the east, Tongbai and Luohe to the north, Tanghe to the west, and Sheqi and Nanyang to the northwest. As of the 2002 census, the population of Biyang County was recorded at 950,000 residents.