This is the telephone area code for Hachioji and surrounding western Tokyo municipalities-part of the Greater Tokyo Area but outside central Tokyo's 03 zone.
How to Call Hachioji from Overseas
- Dial your country's exit code (International Access Code)
- Dial 81 (Japan country code)
- Dial the area code (42 - without the leading 0)
- Dial the local phone number
Example: Calling Hachioji from Brazil
00 81 42 123 4567
Where:
00 = Brazil exit code
81 = Japan country code
42 = Hachioji area code (042 without the 0)
123 4567 = Local Hachioji phone number
Quick Facts
Hachioji Area Code Coverage
The 042 area code covers Hachioji City and neighboring cities in western Tokyo Metropolis:
Hachioji City Center
Hachioji Station, downtown shopping districts, Takao-san area
North Hachioji
Yatsumi, Komiya, and university zones (e.g., Tokyo Metropolitan University)
South Hachioji
Yahata, residential neighborhoods near Keio Line
East Hachioji
Adjacent to Tama New Town, commuter districts
West Hachioji
Mount Takao foothills, forested and suburban areas
Greater Western Tokyo
Includes Tama, Machida, and parts of Akiruno-all use 042 or sub-codes
Major Japan Area Codes
Common Exit Codes for Calling Japan
When calling Hachioji from these countries, use these exit codes:
United States
011
Australia
0011
European Union
00
Japan
010
China
00
Canada
011