| • | Oku (邑久郡; -gun) was a district located in Okayama, Japan.
As of 2003, the district had an estimated population of 39,365 and a density of 313.64 persons per km². The total area was 125.51 km².
This district, dissolved on 1 November 2004, is now part of the city of Setouchi.
Source: [wikipedia: oku district, okayama]
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