page_title: Koga, Ibaraki
hierarchical_section_title: Koga, Ibaraki
context_page_description: Koga is a city located in Ibaraki Prefecture, Japan. As of September 2015, the city had an estimated population of 140,770, and a population density of 1140 persons per km². Its total area is 123.58 square kilometres.
context_section_description: Koga (古河市 Koga-shi) is a city located in Ibaraki Prefecture, Japan. As of September 2015, the city had an estimated population of 140,770, and a population density of 1140 persons per km². Its total area is 123.58 square kilometres (47.71 sq mi).
caption: Location of Koga in Ibaraki Prefecture