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. (December 2009)
Niwa (丹羽郡, Niwa-gun) is a district located in Aichi Prefecture, Japan.
Map of Niwa District in Aichi Prefecture
As of 1 October 2019, the district had an estimated population of 58,304 and a density of 2,351 persons per km2. The total area is 24.79 km2.