Koshi District, Niigata
Koshi (古志郡 Koshi-gun?) was a district located in Niigata Prefecture, Japan.
As of 2003, the district had an estimated population of 2,035 and a density of 51.09 persons per km². The total area is 39.83 km².
Coordinates: 37°19′35.7″N 138°53′24″E / 37.326583°N 138.89000°E
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