Koiwa, inhabited for about 1,800 years, where an old waterway is now a cherry-blossom path
The closest neighborhoods in the same city.
The area around Keisei-Koiwa Station is a dense residential area spanning Kita-Koiwa in Edogawa City and Kamakura in Katsushika City. Heading north into Kita-Koiwa 8-chome, there's a cherry blossom promenade tucked away in the back streets, laid out in 1988 along a former waterway, running 500 meters.
This kind of waterside greenery is exactly what Edogawa City mentions first when describing Kita-Koiwa: a residential area with the Edogawa River, a green promenade, and a lively shopping street. This neighborhood spans two cities, covering Kita-Koiwa 2-chome and 5-chome through 8-chome, and Nishi-Koiwa 5-chome, plus Kamakura 1-chome, 2-chome, and 4-chome in Katsushika City.
The City boundary runs right by the station, with the railroad crossing on the west side already belonging to Katsushika City. In 2020, about 32,000 people lived here, roughly 162 people per hectare.
Based on our street photos, greenery ranks 175th out of 395 neighborhoods in Tokyo, in the middle of the pack — the best-ranked item for this neighborhood.
The station stops for Rapid and Local trains, but not Special Express; there's a supermarket right outside the north exit. To reach JR stations, there are buses from the north exit to Kameari Station, and from the south exit to Koiwa Station and Kanamachi Station.
Sidewalks rank 354th out of 395 neighborhoods in Tokyo, and medical and pharmacy access ranks 346th, both in the lower part of the range.
The railway splits the neighborhood into north and south halves, and there's no proper station plaza out front, so transferring to buses is inconvenient.
Based on points sampled every 40 meters within the neighborhood using the Geospatial Information Authority's flood maps, nearly 90% of points fall within areas expected to flood, mostly 0.5 to 3 meters deep, with nearly 30% at 3 to 5 meters. Both cities require residents to evacuate in advance to areas that won't flood. Katsushika City's water hazard map lets you check flood depth by location.
People first settled in Koiwa about 1,800 years ago, in the late Yayoi period — this is the Kami-Koiwa archaeological site, located around Kita-Koiwa 6 and 7-chome.
The site was discovered in 1952, when a junior high school student picked up pottery fragments in a waterway behind his house. A monument commemorating the excavation still stands today on the Kami-Koiwa Shinsui Ryokudo in Kita-Koiwa 5-chome.
In April 2022, a roughly 5.3-kilometer railway elevation project from Keisei-Takasago to near Edogawa Station was added to the national list of projects in construction preparation, which will remove 13 railroad crossings. Edogawa City's station-area plan will also coordinate with the railway elevation project to redevelop the transit plaza and local streets.
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.
Maps show the shops and the sights. What a street is like, you only know by walking it. TidyMap uses AI street imagery analysis and public facility data to turn each area's street environment and everyday convenience into something you can compare. Search an address and look at the street outside first.
How to read it: yellow = poor, blue = good; grey = not enough data
TidyMap rates the street environment and everyday convenience. It does not assess the home itself, safety, noise or actual living experience. Street environment scores use AI assessments of imagery; convenience scores use public facility data.
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