Along the Tamagawa River, where Canon has its head office, apartments now stand on former factory sites
The closest neighborhoods in the same city.
The banks of the Tamagawa River used to be lined with large factories: Mitsubishi Heavy Industries' Maruko Plant, Mitsui Seiki, NSK, and Hokushin Electric were all once located here. After the factories moved out, the former sites were redeveloped with high-rise apartments and commercial facilities, and the old factory land along the river was also turned into super levees. Beyond the levee, the floodplain is green space and sports grounds, including the city-run Tamagawa Gas Bridge Green Space.
Walk up onto the Gas Bridge and cross the river, and the other side is Kawasaki City. This neighborhood only covers Shimomaruko 3-chome and 4-chome; around 9,000 people lived there in 2020, about 154 per hectare.
Based on our street photos, greenery ranks 20th out of 395 neighborhoods in Tokyo, the highest-ranking category for this neighborhood. Cleanliness ranks 29th, and sidewalks rank 46th, both also near the top.
The area around the Gas Bridge has headquarters and facilities of major companies, so a lot of people get on and off during commuting hours; Shimomaruko Station has the highest ridership among the Tamagawa Line's intermediate stations. Canon's head office is in Shimomaruko, and next to the station there's also the city-run Ota City Residents Plaza.
Both platforms have ticket gates; the next station toward Tamagawa is Unoki, and toward Kamata is Musashi-nitta.
Buildings rank 357th, the weakest category for this neighborhood; medical care and pharmacies rank 341st, and public transit ranks 278th, both also near the bottom.
This neighborhood is small in area, and the street-photo grid used for scoring has only 41 cells, so treat the scores as a rough guide.
TidyMap ran its own estimate, taking points roughly every 40 meters within the neighborhood on the Geospatial Information Authority of Japan's flood inundation hazard map. About 86% of the points fall within the projected flood zone, mostly between 0.5 and 3 meters; about 27% are over 3 meters, mostly in Shimomaruko 4-chome near the river. Please check your own location using Ota City's hazard map.
The station opened in 1924, and its name was taken from the address at the time, 'Ebara-gun Yaguchi-mura Oaza Shimomaruko'; the area was originally the lower part of the Maruko estate (Maruko-sho).
Later, the land along the Tamagawa River became the grounds of these large factories. The factories have all since moved out, and the former sites have been replaced with apartments, commercial facilities, and super levees, so housing now extends right up to the riverbank.
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.
Content is for personal browsing. Official TidyMap neighborhood cards may be shared as generated; anyone using one commercially is responsible for their own compliance (sharing guidelines). Bulk extraction, APIs and dataset redistribution require a data licence — email us. This site uses Google Analytics and Cloudflare Analytics.