Photo: 京浜にけ / CC BY-SA 3.0 · Wikimedia Commons
Koga City
Ibaraki Prefecture · City
Official websiteIbaraki Prefecture page
Koga City is a transportation hub at the western end of Ibaraki Prefecture, near the Watarase River and the Tone River. In history, it flourished as the base of the Koga kubo (a line of regional governors in the Kanto region). At the Koga Peach Festival in spring, flowering peach trees bloom in Koga Kubo Park, and the atmosphere of the old castle town remains.
Key facts
Source: Statistics Bureau of Japan, 2025 Population Census (population, area and density); area from the Geospatial Information Authority of Japan (GSI), Area Statistics of Prefectures and Municipalities (2025). National ranks are among the 1,741 municipalities, ordered by this site from these values.
Live information
Current weather (observed)
Places to visit
Chosen automatically, most popular first, from landmarks and cultural properties registered in Wikidata (we have not checked whether each is open). Names and descriptions: Wikidata (CC0); photos: Wikimedia Commons (photographer and license under each photo).
Neighboring municipalities
Municipalities sharing a boundary (computed from the National Land Numerical Information administrative boundaries, January 2021).
Other municipalities in Ibaraki Prefecture
The description was written for this site, picking out representative features.