Kawaguchi City Office:
phone number, opening hours and address
The main phone number of the Kawaguchi City Office is 048-258-1110. Here is what to know before you call, with the address, opening hours and official website.
Kawaguchi City Office main line
Official website www.city.kawaguchi.lg.jp
Without hyphens: 0482581110
The main number connects you to an operator, who will put you through to the right section. Calls are usually answered in Japanese.
Checked against the official website · October 7, 2026
ABOUT
About Kawaguchi City
Kawaguchi City gained city status in 1933, merged with Hatogaya City in 2011 and became a core city in 2018, and is the most populous city in the prefecture. Bordering Tokyo across the Arakawa River, it developed through its cast-metal and garden-plant industries. The city office is in Aoki, near Kawaguchi Station, and its new building fully opened in 2020.
BASIC INFO
Basic information
- Main phone
- 048-258-1110
- Address
- 〒332-8601 埼玉県川口市青木2丁目1番1号Shown in Japanese so you can paste it into a map app or show it to a taxi driver.
- Opening hours
- Weekdays 8:30–17:15 (service counters 9:00–16:30)Closed on weekends, public holidays and Dec 29 – Jan 3
- Official website
- www.city.kawaguchi.lg.jp
- Local government code
- 112038Saitama Southern Area · City
ACCESS
Access and map
Address
〒332-8601 埼玉県川口市青木2丁目1番1号
RELATED OFFICES
Phone numbers of related government offices
Public offices in charge of this municipality (national and prefectural branches). National taxes — income tax and consumption tax returns, tax certificates — are handled by the tax office, not the municipal office. Addresses are shown in Japanese.
- 048-252-5141
〒332-8666 埼玉県川口市青木2丁目2番17号
Covers Soka City as well as Kawaguchi City
Part of this municipality is covered by a different office. Check the agency's official website for your address.
- 048-253-4061
〒332-8654 埼玉県川口市西川口4丁目6番18号
Covers Warabi City, Toda City as well as Kawaguchi City
Part of this municipality is covered by a different office. Check the agency's official website for your address.
- 048-831-1638
〒330-8580 埼玉県さいたま市浦和区北浦和5-5-1
Covers Saitama City, Warabi City, Toda City, Sakura Ward, Urawa Ward, Minami Ward, Midori Ward as well as Kawaguchi City
Personal pension consultations are accepted at any pension office in Japan.
- 048-251-2901
〒332-0031 埼玉県川口市青木3-2-7
Covers Warabi City, Toda City as well as Kawaguchi City
- 048-266-5557
〒333-0842 埼玉県川口市前川1-11-1
FAQ
Frequently asked questions
What is the phone number of the Kawaguchi City Office?
The main phone number of the Kawaguchi City Office is 048-258-1110. It connects you to an operator, who will transfer you to the right section once you explain what you need.
What are the opening hours of the Kawaguchi City Office? What time does it open and close?
Opening hours of the Kawaguchi City Office: Weekdays 8:30–17:15 (service counters 9:00–16:30). It is closed on Saturdays, Sundays, public holidays and over the New Year break (Dec 29 – Jan 3). Hours can differ by counter and service, so please check the official website for details.
Can I call the Kawaguchi City Office on weekends or at night?
The main line is generally not answered outside opening hours. For non-urgent procedures and certificates you may be able to use online applications on the official website (https://www.city.kawaguchi.lg.jp/) or the Mynaportal. Check the official website for any weekend service counters.
Which tax office and pension office cover the Kawaguchi City Office?
Kawaguchi City is split between several tax offices: Kawaguchi Tax Office (048-252-5141), Nishikawaguchi Tax Office (048-253-4061). Check the National Tax Agency page to find the office for your address. Pension matters are handled by Urawa Pension Office (048-831-1638).
GOVERNMENT OFFICES
Phone numbers of tax offices, pension offices, Hello Work and public health centers
Main phone numbers, addresses and jurisdictions of the offices in Saitama.
NEARBY
Other municipalities in Southern Area, Saitama
For staff of municipalities and public offices
We accept requests to correct or update the phone numbers, office hours, addresses and other details listed here. We check each request against the official website before updating.
The phone numbers, addresses and opening hours on this page are based on information published on each municipality's official website (last checked: October 7, 2026). Please check the official website for the latest information. This page compiles public information for the convenience of residents and does not indicate any business or partnership relationship between the listed municipalities and AIRI (LIVERUSH Co., Ltd.). If you find an error, please let us know via our contact form.
Tax office names, addresses, phone numbers and jurisdictions are based on the National Tax Agency's 税務署の所在地などを知りたい方 (checked October 19, 2026). Pension office names, addresses, phone numbers and jurisdictions are based on the Japan Pension Service's 年金事務所管轄区域 (checked October 19, 2026). Hello Work (public employment office) names, addresses, phone numbers and jurisdictions are based on the Ministry of Health, Labour and Welfare's 全国ハローワーク所在案内 (checked October 19, 2026). Public health center names, addresses, phone numbers and jurisdictions are based on the Ministry of Health, Labour and Welfare's 保健所管轄区域案内 (checked October 19, 2026).