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Overview & City Profile
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.
Within Saitama Prefecture (Kanto region), Kawaguchi (川口市) serves as a core city in saitama prefecture. Travelers exploring Saitama often combine a stop in Kawaguchi with regional highlights such as Kawagoe 'Little Edo' clay-walled warehouse district, Chichibu mountain shrines & Nagatoro river gorge, the Railway Museum in Omiya, and Omiya Bonsai Village.
| 項目 | 詳細資料：Kawaguchi (川口市) |
|---|---|
| 日文名稱 | 川口市 (Kawaguchi) |
| 行政區地位 | Core city in Saitama Prefecture |
| Prefecture & Capital | Saitama Prefecture (Capital: Saitama) |
| 日本地方分區 | Kanto |
| 人口 | 552,883 residents |
| 總面積 / 人口密度 | 61.97 km² · 8,922 people per km² |
| 設市 / 成立時間 | 1933-04-01 |
| 地理座標 | 35.8077°N, 139.7241°E |
Getting to Kawaguchi & Getting Around
Via the regional hub (Omiya Station (Shinkansen & JR hub)): 30m from central Tokyo via JR Saikyo/Takasaki/Utsunomiya lines to Omiya, or 30–45m from Ikebukuro to Kawagoe (Tobu/Seibu) and Chichibu.
- Local rail & IC cards: Once in Saitama Prefecture, JR regional lines and local private railways connect Saitama with Kawaguchi. Nationwide IC cards (Suica, Pasmo, Icoca) work on major urban and JR commuter gates; for rural branch lines or local buses, keep ¥1,000 bills and ¥100 coins handy for the onboard fare box.
- Luggage & station lockers: Main stations in Saitama have coin lockers for day-trippers. If you are stopping in Kawaguchi en route between larger bases, check your suitcase dimensions in our Luggage & Locker Checker or forward big bags ahead with Takkyubin.
- Driving & car rental: While city centers around Kawaguchi are accessible by train and taxi, renting a car from a major Shinkansen station or airport in Saitama can be rewarding for reaching mountain gorges, coastal viewpoints, and countryside onsen. Read our Renting a Car in Japan Guide.
Kawaguchi & Saitama必吃在地美食與特產
Kawaguchi承襲了Saitama縣與Kanto地方的飲食文化。造訪時千萬別錯過以下在地名物與特產：
- Kawagoe sweet potato snacks & unagi (eel) — a signature specialty across Saitama Prefecture.
- Chichibu waraji katsu-don (pork cutlet) &くるみ (walnut) soba — a signature specialty across Saitama Prefecture.
- Soka senbei rice crackers — a signature specialty across Saitama Prefecture.
- Fukaya negi dishes — a signature specialty across Saitama Prefecture.
For dietary restrictions or food allergies, open our Japanese Phrasebook & Show-to-Staff Cards to display clear Japanese dietary explanations at restaurants in Kawaguchi.
Best Time to Visit & Seasonal Highlights
October (3rd weekend) for Kawagoe Festival; late April–early May for Chichibu Hitsujiyama Park pink moss phlox (shibazakura); December 2–3 for Chichibu Night Festival.
Regional highlights across Saitama Prefecture that pair well with a visit to Kawaguchi include: Kawagoe 'Little Edo' clay-walled warehouse district, Chichibu mountain shrines & Nagatoro river gorge, the Railway Museum in Omiya, and Omiya Bonsai Village.
Kawaguchi旅遊實用貼士與注意事項
- Tourist information center (観光案内所): Look for the Kankō Annaijo counter at the regional hub (Omiya Station (Shinkansen & JR hub)) or major stations in Saitama Prefecture for free walking maps, bus timetables, and festival calendars.
- Cash & ATMs: While hotels, chain stores, and convenience stores in Kawaguchi accept international cards and IC payment, smaller family-run restaurants, shrines, and rural buses often prefer cash. 7-Eleven (Seven Bank) and Japan Post ATMs accept foreign debit cards reliably.
- Dining hours: Outside major metropolitan hubs, lunch typically runs 11:30 AM–2:00 PM and dinner spots open around 5:30 PM, with earlier last orders (around 8:00–9:00 PM) in smaller cities.
常見問題 (FAQ)
Where is Kawaguchi (川口市) located in Japan?
Kawaguchi (川口市) is a core city located in Saitama Prefecture in the Kanto region of Japan (coordinates: 35.8077°N, 139.7241°E). It has a population of approximately 552,883 across an area of 61.97 km².
How do I get to Kawaguchi by train?
Most visitors reach Kawaguchi via the main prefectural gateway of Omiya Station (Shinkansen & JR hub). 30m from central Tokyo via JR Saikyo/Takasaki/Utsunomiya lines to Omiya, or 30–45m from Ikebukuro to Kawagoe (Tobu/Seibu) and Chichibu. From the regional hub, connect by JR local/rapid lines, private commuter railways, or local bus to Kawaguchi. You can estimate long-distance rail costs using our Shinkansen Fare Calculator.
What local food is Kawaguchi and Saitama known for?
In Kawaguchi and across Saitama Prefecture, top local dishes include Kawagoe sweet potato snacks & unagi (eel), Chichibu waraji katsu-don (pork cutlet) &くるみ (walnut) soba, Soka senbei rice crackers, as well as Fukaya negi dishes. Look for local ekiben (station bento boxes), morning markets, and family-run shokudo near the main station.
When is the best time of year to visit Kawaguchi?
October (3rd weekend) for Kawagoe Festival; late April–early May for Chichibu Hitsujiyama Park pink moss phlox (shibazakura); December 2–3 for Chichibu Night Festival. Check our Japan Seasonal Calendar to compare month-by-month weather and crowd levels.
Official sources & further reading
Rules, prices and schedules change. Confirm details here before you travel: