Ōnuma (大沼郡, Ōnuma-gun) is a district of Fukushima Prefecture, Japan.
[1] As of 2008, the district has an estimated population of 29,787 and a density of 34.2 persons per km2.
[citation needed] Its total area is 870.51 square kilometres (336.11 sq mi).
[1] It contains one village (Shōwa) and three towns: Aizumisato, Kaneyama, and Mishima.
This Fukushima Prefecture location article is a stub.