This is the telephone area code for Nagaoka, the second-largest city in Niigata Prefecture, famous for one of Japan's "Big Three" fireworks festivals and its heavy winter snowfall.
How to Call Nagaoka from Overseas
- Dial your country's exit code (e.g., 011 for US/Canada, 00 for UK/EU)
- Dial 81 (Japan country code)
- Dial the area code (258 - without the leading 0)
- Dial the local phone number
Example: Calling Nagaoka from USA
011 81 258 35 1111
Where:
011 = US exit code
81 = Japan country code
258 = Nagaoka area code (0258 without the 0)
35 1111 = Local Nagaoka phone number
Quick Facts
Nagaoka & Chuetsu Region Coverage
The 0258 area code serves Nagaoka City and several important municipalities in the central Chuetsu region:
Nagaoka Center
Nagaoka Station (Joetsu Shinkansen), City Hall, and the Shinano River fireworks viewing areas.
Ojiya City
Neighboring city famous for being the birthplace of Nishikigoi (ornamental carp).
Teradomari
Coastal district known for its famous "Fish Market Street" and sea-facing hotels.
Tochio
Mountainous region famous for jumbo fried tofu (Tochio-no-aburaage).
Izumozaki
Historic town on the Sea of Japan coast, former gold shipping port.
Koshiji
Home to famous sake breweries and scenic maple parks.
Major Japan Area Codes
Common Exit Codes for Calling Japan
Use these exit codes when calling Nagaoka from abroad:
United States
011
Australia
0011
United Kingdom
00
Singapore
001
China
00
Canada
011