Area Codes by Country
Find city and regional dialing codes for any country. Complete directory of telephone area codes, trunk prefixes, and number formats.
Understanding Area Codes
What are Area Codes?
Area codes (also called city codes or STD codes) are numerical prefixes that identify specific geographic regions within a country's telephone system.
Trunk Prefix
Many countries use a trunk prefix (like "0" or "1") for domestic calls. When calling internationally, you typically drop this prefix.
International Format
International format: +[Country Code] + [Area Code] + [Local Number]. Example: +44 20 XXXX XXXX for London.
Countries with Detailed Area Codes
United States
15 area codes
United Kingdom
10 area codes
Canada
8 area codes
Germany
8 area codes
France
5 area codes
Japan
8 area codes
Australia
4 area codes
India
8 area codes
China
8 area codes
Brazil
7 area codes
Mexico
5 area codes
Spain
5 area codes
Italy
6 area codes
Netherlands
5 area codes
South Korea
5 area codes
Thailand
4 area codes
Singapore
3 area codes
All Countries by Region
North America
Europe
Asia
South America
Complete Guide to Telephone Area Codes
Area codes are essential for routing telephone calls within a country. Each area code corresponds to a specific geographic region, city, or metropolitan area. Understanding area codes helps you dial correctly and can even help identify the origin of incoming calls.
Types of Telephone Codes
- Country Code: International dialing prefix (e.g., +1 for USA, +44 for UK)
- Area Code: Regional/city identifier (e.g., 212 for NYC, 20 for London)
- Trunk Prefix: Domestic long-distance prefix (e.g., "0" in UK, "1" in USA)
- Mobile Prefix: Identifies mobile numbers (e.g., 07 in UK, various in USA)
Common Area Code Formats
- North America: 3-digit area codes (NPA-NXX-XXXX format)
- Europe: Variable length (1-4 digits typically)
- Asia: Usually 1-3 digits for major cities
- Australia: Single-digit state codes (02, 03, 07, 08)