Kawaguchi (川口市, Kawaguchi-shi) is a city located in southeastern Saitama Prefecture, Japan. As of 1 April 2025, the city had an estimated population of 595,011 in 293,582 households and a population density of 9605 persons per km². The total area of the city is 61.95 square kilometres (23.92 sq mi). It is the Greater Tokyo Area's 8th most populated city (after passing Hachioji), and second largest in Saitama Prefecture, after eponymous Saitama.
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👉 Kawaguchi, Saitama in the context of Keihin–Tōhoku Line
The Keihin–Tōhoku Line (Japanese: 京浜東北線, Hepburn: Keihin-tōhoku-sen) is a railway line in Japan which connects the cities of Saitama, Kawaguchi, Tokyo, Kawasaki, and Yokohama. It is part of the East Japan Railway Company (JR East) network. The line's name is derived from the characters for Tokyo (Japanese: 東京), Yokohama (Japanese: 横浜) and the Tōhoku Main Line (Japanese: 東北本線). The line runs parallel with the Tōkaidō Main Line between Yokohama and Tokyo and the Utsunomiya Line (part of the Tōhoku Main Line) except between Ueno and Akabane stations where the two lines are physically separate and thus alternate routes.
Most Keihin–Tōhoku Line trains have a through service onto the Negishi Line between Yokohama and Ōfuna stations. As a result, the entire service between Ōmiya and Ōfuna is typically referred to as the Keihin-Tōhoku–Negishi Line (Japanese: 京浜東北・根岸線) on system maps and in-train station guides. Keihin–Tōhoku–Negishi Line trains are recognizable by their light blue stripe (the line's color on maps is also light blue).
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Kawaguchi, Saitama in the context of Saitama Prefecture
Saitama Prefecture (埼玉県, Saitama-ken; Japanese pronunciation: [saꜜi.ta.ma, sai.ta.maꜜ.keɴ]) is a landlocked prefecture of Japan located in the Kantō region of Honshu. Saitama Prefecture has a population of 7,338,536 (January 1, 2020) and has a geographic area of 3,797 km (1,466 sq mi). Saitama Prefecture borders Tochigi Prefecture and Gunma Prefecture to the north, Nagano Prefecture to the west, Yamanashi Prefecture to the southwest, Tokyo to the south, Chiba Prefecture to the southeast, and Ibaraki Prefecture to the northeast.
Saitama is the capital and largest city of Saitama Prefecture, with other major cities including Kawaguchi, Kawagoe, and Tokorozawa.
Kawaguchi, Saitama in the context of Funabashi
Funabashi (船橋市, Funabashi-shi) is a city located in Chiba Prefecture, Japan. As of 1 December 2020, the city had an estimated population of 644,668 in 309,238 households and a population density of 7,500 inhabitants per square kilometre (19,000/sq mi). The total area of the city is 85.62 square kilometres (33.06 sq mi). It is the Greater Tokyo Area's 7th most populated city (after passing Kawaguchi, Hachioji and Chiba), and second largest in Chiba Prefecture.
Kawaguchi, Saitama in the context of Kawaguchi Station
Kawaguchi Station (川口駅, Kawaguchi-eki) is a passenger railway station located in the city of Kawaguchi, Saitama, Japan, operated by East Japan Railway Company (JR East).