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 with a density of 51.09 persons per km2.

Prior to its dissolution, the district contained only one village:

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Map showing original extent of Koshi District in Niigata Prefecture :

* yellow - areas formerly within the district borders during the early Meiji period