Tijuana, a bustling border city in the state of Baja California, is a hub of commerce, culture, and communication. To keep up with its rapid growth and the increasing demand for telephone lines, a new area code has been introduced. This article provides a comprehensive overview of the area code 663 Mexico, explaining its purpose, location, and how to dial it correctly.
A New Era of Communication for Tijuana
The area code 663 Mexico was implemented as an overlay to the existing and long-standing 664 area code. This means that both area codes now serve the same geographic region: the municipality of Tijuana. The introduction of the area code 663 Mexico became necessary as the pool of available phone numbers under the 664 code was nearing exhaustion due to the proliferation of mobile phones and communication services.
This overlay plan ensures a continuous supply of new telephone numbers to meet the city’s growing needs without the need to split the city into different geographic zones with separate area codes.
Geographic Location: The Heart of Baja California

The sole recipient of the area code 663 Mexico is the city of Tijuana. Located directly on the border with the United States, adjacent to San Diego, California, Tijuana is one of Mexico’s most populous and economically vital cities. The implementation of this new area code is a direct reflection of the city’s dynamic growth and its increasing integration into the global communication network.
How to Dial the Area Code 663 Mexico
With the introduction of the ten-digit dialing system across Mexico, the process for calling numbers in Tijuana, whether they begin with 664 or the new area code 663 Mexico, has been standardized.
Calling from within Mexico
To call a number in Tijuana from any other part of Mexico, you simply dial the ten-digit number, which includes the three-digit area code followed by the seven-digit local number.
- For example: To call a number in Tijuana, you would dial: 663-XXX-XXXX or 664-XXX-XXXX
Calling from outside of Mexico
When calling a number in Tijuana from another country, you will need to use Mexico’s country code, which is +52.
- Dialing a landline or mobile number: Dial your country’s international access code (e.g., 011 from the United States and Canada), followed by Mexico’s country code (52), the area code (663 or 664), and then the seven-digit phone number.
- From the US/Canada: 011 + 52 + 663 + XXX-XXXX
What This Means for Residents and Visitors
For residents of Tijuana, the introduction of the area code 663 Mexico means that new phone lines may be assigned this new prefix. It is important to always remember to include the area code when dialing any local number to ensure the call connects correctly.
For those visiting or doing business with individuals and companies in Tijuana, it is crucial to confirm the correct ten-digit phone number, as it could now start with either 664 or 663. The addition of the area code 663 Mexico is a testament to Tijuana’s continued development and its vital role as a key communication nexus in the region.