AS SALIHIYYAH AL JADIDAH, EGYPT – When making calls to the bustling border city of Tijuana, Mexico, one might encounter a specific three-digit number that is crucial for connecting: the area 663 Mexico. This area code is an integral part of the telecommunications network in the state of Baja California, specifically serving one of the country’s most dynamic metropolitan regions.
This article provides a detailed look at the area 663 Mexico, its geographical location, and its relationship with other local area codes, offering clarity for anyone needing to connect with this vibrant part of Mexico.
Geographic Location: Tijuana, Baja California
The area 663 Mexico is geographically assigned to the municipality of Tijuana in the state of Baja California. This major city, situated on the U.S.-Mexico border adjacent to San Diego, California, is a hub of commerce, tourism, and manufacturing. The implementation of area code 663 is a direct response to the growing demand for telephone numbers in this densely populated and economically active area.
When dialing a number in Tijuana, you will use the 663 prefix after Mexico’s country code (+52) and before the local seven-digit phone number.
An Overlay Area Code for a Growing City

A key aspect of the area 663 Mexico is that it functions as an “overlay” to the existing 664 area code. This means both the 663 and 664 area codes serve the same geographic territory of Tijuana. This approach was adopted to address the exhaustion of available phone numbers within the original 664 area code without having to split the city into different numbering zones.
What this overlay means for residents and those calling into Tijuana is:
- Existing numbers with the 664 area code remain unchanged.
- New phone numbers assigned in Tijuana may be given the 663 area code.
- 10-digit dialing is mandatory for all local calls within Tijuana, meaning you must dial either 664 or 663 followed by the seven-digit number to connect a call.
This system ensures a continuous supply of new telephone numbers to accommodate the city’s growth while maintaining consistency for existing users.
How to Dial a Number with the Area 663 Mexico
To successfully place a call to a number within the area 663 Mexico from outside the country, you would follow the standard international dialing format:
- Dial your country’s international access code (e.g., 011 from the United States).
- Dial Mexico’s country code, which is 52.
- Dial the area code, 663.
- Dial the seven-digit local phone number.
For example, a call from the United States to a Tijuana number in this area code would look like this: 011-52-663-XXX-XXXX.
Understanding the role and location of the area 663 Mexico is essential for seamless communication with one of North America’s most important border cities. As Tijuana continues to expand, this area code will play an increasingly vital role in its telecommunications infrastructure.