Koga, Ibaraki

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Location of Koga in Ibaraki Prefecture
Location of Koga in Ibaraki Prefecture
Koga is located in Japan
Location in Japan
Coordinates: 36°11′N 139°42′E / 36.183°N 139.700°E / 36.183; 139.700Coordinates: 36°11′N 139°42′E / 36.183°N 139.700°E / 36.183; 139.700
Country Japan
Region Kantō
Prefecture Ibaraki Prefecture
 • Mayor Kenichiro Sugaya
 • Total 123.58 km2 (47.71 sq mi)
Population (January 2008)
 • Total 144,392
 • Density 1,200/km2 (3,000/sq mi)
Time zone Japan Standard Time (UTC+9)
- Tree Zelkova serrata
- Flower Prunus persica
Address 2248 Shimoōno, Koga-shi, Ibaraki-ken
Phone number 0280-92-3111
Website Koga City

Koga (古河市 Koga-shi?) is a city located in Ibaraki Prefecture, Japan.

As of January 1, 2008, the new city has an estimated population of 144,392 and a population density of 1,200 persons per km². The total area is 123.58 km².

On September 12, 2005, Koga absorbed the towns of Sanwa and Sōwa (both from Sashima District) to create the new and expanded city of Koga. The new city hall is now located at the former town of Sōwa.


The city has its origins in the Tokugawa period when a castle was built in the 16th century at the ford and a town sprang up around it. The site of the castle is still visible near Koga First Elementary School.

The modern city was founded on August 1, 1950. It has many old shrines like Suzume-jinja. Some are dedicated to O-inari and some old temples like Hase Kannon. Sogo Koen Park near the Watarase River was formally a summer palace for a local daimyo. It has two restored 17th century farmhouses, like Old Nakayama house. Takami Senseki house/museum near the history museum is also an Edo period structure. There is a literary museum also located in the city.

Navel Park in Sowa-machi has outdoor and barbecue facilities for families. Koga west of the station is old and has many old buildings. Many of the streets are cobbled. The Koga Historical Museum and Art Museum are located here. But east of the station is new and has many residential and shopping areas. Koga is famous for its cabbage known as kabutsu. There are many matsuri or festivals. In the last week of March is the Peach Blossom festival. Then in the first week of August there is a Hanabi or fireworks festival held by the river (Koga Dote) and in early December there is a lantern festival known as Cho Chin. This term translates as lantern battle.

External links[edit]

Media related to Koga, Ibaraki at Wikimedia Commons