Denzu-in Temple, where Tokugawa Ieyasu's mother is buried, hosts a morning glory market in July
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Koishikawa belongs to Yamanote, and most of the area is upland plateau; the slope in front of Denzu-in is called Zenkoji-zaka. Every July, the local neighborhood associations, residents' associations, and shopping associations jointly hold the Bunkyo Asagao-Hozuki-ichi, a morning glory and Chinese lantern plant fair, with the main venue at Denzu-in and Genkaku-ji.
Morning glories (asagao) are sold at Denzu-in, and Chinese lantern plants (hozuki, a plant that bears red lantern-shaped fruit) are sold at Genkaku-ji, and there's also a morning glory viewing event for local first-graders. Genkaku-ji is also called "Konnyaku Enma," after a legend that Enma, the king of hell, gave one of his eyes to an old woman suffering from an eye disease, and she gave up her favorite food, konnyaku, as an offering from then on. Even today, people still offer konnyaku there, praying for their eye ailments to be cured.
Walking from the two temples toward the station, Kasuga Station and Korakuen Station are connected underground, where the Mita Line, Oedo Line, Marunouchi Line, and Namboku Line all meet. The roughly 2.4-hectare redevelopment of Koishikawa 1-chome in front of the station was completed in November 2023.
In 2020, over half of the households in this neighborhood owned the home they lived in, a higher rate than for Bunkyo City overall, and there were also a few more children under fifteen than the City average.
From our street photos, cleanliness ranks 29th out of 395 neighborhoods in Tokyo, and greenery ranks 30th — these are the two highest-ranking categories for this neighborhood. Overall street environment ranks 40th.
The two stations connect underground directly to the Bunkyo Civic Center, where the Bunkyo City Office is located. The building is 28 stories above ground and 142 meters tall, so you can handle paperwork and catch a train in the same place.
When transferring at Korakuen Station, the Marunouchi Line platform is on 2F above ground, while the Namboku Line platform is six floors underground, a height difference of 41 meters.
In 2020, about 253 people lived per hectare in this neighborhood.
The name "Koishikawa" comes from the Yabata River, which flowed through this area and was already called Koishikawa at the time. Denzu-in was founded in 1415, and in 1603 Tokugawa Ieyasu buried his mother, Odai no Kata, here. In 1630, Tokugawa Iemitsu's wet nurse, Kasuga no Tsubone, was granted land in this area, which later became a townspeople's quarter (machiya).
From the mid-Meiji era onward, the Tokyo Arsenal drove industrialization, and Koishikawa changed from a quiet suburb into a place where many factory workers settled. Korakuen Station opened in 1954 along with the Marunouchi Line, while Kasuga Station had to wait until the Mita Line opened in 1972. As for the town name "Kasuga," it was originally located in what is now Koraku, and only moved here later when addresses were reorganized (jukyo hyoji).
Compared with the 395 Tokyo neighborhoods in this guide (scores 0–10)
Hospitals with inpatient beds (2020 data), public elementary and junior high schools whose catchment covers this area, high schools and universities within 1 km, stations, parks of 1 ha or more, and large shopping malls and department stores. Many Tokyo junior high students attend private schools, so junior high catchments are only a guide.
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How to read it: yellow = poor, blue = good; grey = not enough data
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