This is the telephone area code (LADA) for San Juan del Rio, the second most important industrial city in the state of Queretaro.
How to Call San Juan del Rio from Overseas
Mexico uses a standard 10-digit national dialing format. To call San Juan del Rio from outside the country:
- Dial your country's international exit code (e.g., 011 for USA, 00 for UK/Europe)
- Dial 52 (Mexico country code)
- Dial the area code (427)
- Dial the 7-digit local number
Example: Calling San Juan del Rio from Canada
011 52 427 123 4567
Where:
011 = Exit code
52 = Mexico country code
427 = SJR area code
123 4567 = Local phone number
Quick Facts
San Juan del Rio Area Code Coverage
The 427 area code covers the city and neighboring regions critical to the "Bajio" industrial corridor:
San Juan del Rio
Primary urban area and major industrial parks
Tequisquiapan
Neighboring "Magic Town" famous for wine, cheese, and tourism (shares the 427 code)
Ezequiel Montes
Nearby livestock and agricultural hub (partially served by 427/441)
Pedro Escobedo
Strategically located between Queretaro City and San Juan del Rio