Koga古河市

Koga-shi. The name ends in (shi), the word for city.

Koga (古河市, Koga-shi) is a city in Ibaraki Prefecture. Population 139,344 (2020 census), area 123.58 km². Borders 10 places.

A city (市 / shi) in Ibaraki Prefecture. It elects its own mayor and assembly, the same tier of government as every other municipality in Japan.

Open Koga on the map

Facts

Japanese name
古河市
Reading
Koga-shi
Kind
City (市): a local government
Prefecture
Ibaraki 茨城県
Region
Kantō 関東
Population
139,344 (2020 census)
Change since 2015
-1.1% from 140,946
Area
123.58 km²
Density
1,128 people per km²
Households
56,149
Under 15
11.7%
65 and over
28.7%
Foreign residents
3,311 (2.4%)
Code
08204 (団体コード, the municipality code)
Website
www.city.ibaraki-koga.lg.jp
Wikipedia
English / 日本語

Neighbouring municipalities

10 places share a land border with Koga. Borders across water are not counted.

Questions about Koga

Is Koga a city or a prefecture?
Koga (古河市) is a city (市, shi) in Ibaraki Prefecture. It is a municipality, the lower of Japan's two tiers of local government, and elects its own mayor and assembly.
Where is Koga?
Koga is in Ibaraki Prefecture (茨城県), in the Kantō region of Japan. The prefecture is a government; the region is a customary grouping of prefectures and elects nothing.
What is the population of Koga?
139,344 at the 2020 census, down 1.1% from 140,946 in 2015. The area is 123.58 km², which is 1,128 people per km². 56,149 households. 28.7% of residents are 65 or older and 11.7% are under 15.
Which municipalities border Koga?
10: Yuki City (結城市), Bando City (坂東市), Yachiyo Town (八千代町), Goka Town (五霞町), Sakai Town (境町), Tochigi City (栃木市) in Tochigi, Oyama City (小山市) in Tochigi, Nogi Town (野木町) in Tochigi, Kazo City (加須市) in Saitama, and Kuki City (久喜市) in Saitama. These are the municipalities that share a land border with Koga in the boundary data. Borders across water are not counted.
How is Koga written in Japanese?
古河市, read Koga-shi. The last character, 市 (shi), is the word for city, and the name is often used without it in English.
How does an address in Koga begin?
茨城県古河市… (Ibaraki-ken, Koga-shi, …). The prefecture name is written first, then the city name. After that are written the named area, the chōme, the block, and the building number.

Boundaries and neighbours: MLIT 国土数値情報. Population, households, and age groups: 2020 Population Census (令和2年国勢調査). Area: Geospatial Information Authority of Japan (全国都道府県市区町村別面積調, 2020). Website and Wikipedia links: Wikidata.