| • | Koga (古河市; -shi) is a city located in Ibaraki, Japan.
As of 2003, the city has an estimated population of 58,675 and the density of 2,794.05 persons per km². The total area is 21.00 km².
The city was founded on August 1, 1950.
Source: [wikipedia: koga, ibaraki]
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