This is the telephone area code (known in Mexico as LADA) for the Monterrey Metropolitan Area in the state of Nuevo Leon.
How to Call Monterrey from Overseas
Mexico recently simplified its dialing system. Whether you are calling a landline or a mobile phone, the format is now the same.
- Dial your country's exit code (e.g., 011 for USA, 00 for UK)
- Dial 52 (Mexico country code)
- Dial the area code (81)
- Dial the 8-digit local number
Example: Calling Monterrey from the United States
011 52 81 1234 5678
Where:
011 = US exit code
52 = Mexico country code
81 = Monterrey area code
1234 5678 = Local Monterrey phone number
Quick Facts
Monterrey Area Code Coverage
The 81 area code covers the entire Monterrey metropolitan area, including these key municipalities:
Monterrey
State capital and business district
San Pedro Garza Garcia
Major corporate and luxury residential hub
San Nicolas de los Garza
Industrial area and home to UANL university
Guadalupe
Residential and commercial sector near Cerro de la Silla
Santa Catarina
Industrial gateway towards Saltillo
Apodaca
Location of the International Airport and industrial parks