Quick answer: The Mexico country code is +52. Dial it as exit code + 52 + area code + local number — ten digits after +52, every time. From the US that's
011 52 …; from the UK or most of Europe it's00 52 …; from any mobile, just press+and52. Most important rule: since the August 3, 2019 reform, landlines and mobiles use the same ten-digit format — do not add a "1" after 52 the way old guides told you to. That single stray digit is the most common reason a call to Mexico fails today.
The Mexico country code (+52): your no-confusion calling guide
Trying to call someone in Mexico and the call just will not connect? The fix is usually one or two digits — and a rule that changed a few years ago that most people never heard about.
The Mexico country code is +52. Simple enough. But the order of the digits around it, and a 2019 update that scrapped an old mobile rule, are where calls go wrong.
This guide walks through the exact format step by step. By the end, you'll dial Mexico right the first time, whether it's a landline in Guadalajara or a cell phone in Cancún.
The short answer first
If you only remember one thing, remember this structure.
| Part | What to dial |
|---|---|
| Exit code | 011 from the US / Canada, 00 from most of Europe |
| Country code | 52 |
| Area code | 2 or 3 digits (city-specific) |
| Local number | The remaining digits |
Together that gives you a full ten-digit national number after the +52. Get the pieces in that order and you are set.
How to call Mexico from anywhere
This is the most common route, so let's nail it down.
From the United States or Canada
Start with 011, the exit code for the North American Numbering Plan. Then add 52, then the ten-digit Mexican number.
A real example. Say you're calling a number in Mexico City. Mexico City uses the area code 55. You'd dial:
011 + 52 + 55 + XXXX XXXX
That's the whole sequence — no extra digits, no guesswork.
From the rest of the world
The logic is the same; only the exit code changes. Most countries use 00 as their exit code — the UK, Germany, France, and much of Europe all dial 00 to leave the country.
| Calling from | Exit code |
|---|---|
| United States / Canada | 011 |
| United Kingdom | 00 |
| Australia | 0011 |
| Germany, France, Spain | 00 |
| Japan | 010 |
After your exit code, dial 52, then the ten-digit number. On any mobile, the + symbol replaces the exit code entirely — so +52 works from anywhere.
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The 2019 change you need to know about
Mexico overhauled its phone system on August 3, 2019. It is worth understanding why.
Before that date, dialing rules differed between landlines and mobiles, and the number of digits varied by region. It was genuinely confusing.
What changed
The reform created one uniform ten-digit national format for every number in the country. No more separate mobile prefixes. No more guessing how many digits a city needed. One format, nationwide — a real improvement for international callers.
The "1" you should no longer dial
Here's the big update. For years, callers added a "1" after 52 to reach Mexican mobiles.
That requirement is gone. Since 2020, you don't add a "1" — mobiles and landlines now use the identical ten-digit format. Old habits cause failed calls, so drop it.
Why it still trips people up
Plenty of old guides, contact lists, and saved numbers still use the pre-2019 format with the extra "1." If a call fails, this is the first thing to check. Strip out any stray "1" after 52 and try again.
Mexico area codes for major cities
Mexico assigns area codes by geography. The biggest cities get the shortest codes — Mexico City, Guadalajara, and Monterrey use two-digit codes. Most other cities use three digits.
| City | Area code |
|---|---|
| Mexico City | 55 |
| Guadalajara | 33 |
| Monterrey | 81 |
| Tijuana | 664 |
| Cancún | 998 |
| Mérida | 999 |
| Puebla | 222 |
| Querétaro | 442 |
This is not the full list — Mexico has hundreds of codes. For a smaller town, a quick search for "[city] Mexico area code" gives you the right one.
Landlines vs. mobile phones
Good news: there is no difference anymore. Since the 2019 standardization, landlines and mobiles share the same ten-digit format and the same area codes. You dial both the same way.
Texting Mexican numbers
The same +52 format applies to SMS. Add a contact in WhatsApp or your messaging app using +52 and the full number. WhatsApp calls and messages travel over the internet, so they avoid international rates. Standard carrier SMS, though, may still cost extra.
Troubleshooting failed calls to Mexico
When a call won't go through, run this checklist before giving up.
- "Invalid number" message. Recheck the sequence: exit code, then 52, then area code, then local number. A missing or extra digit is the usual culprit.
- The call does not connect. Confirm the number is still active and that you haven't added the outdated "1" after 52. Also check the area code matches the city.
- Why VoIP helps. Internet-based calling skips traditional phone lines, which lowers cost and improves reliability. For frequent calls to Mexico, it's the practical choice over a standard carrier plan.
Final thoughts
Calling Mexico comes down to one clean formula: exit code, then 52, then the ten-digit number — no extra "1," no exceptions.
The 2019 reform made this simpler than it has ever been. The only thing that still causes trouble is outdated information, so trust the ten-digit format and update any old contacts.
Whether you're reaching family, running a business, or expanding south of the border, My Country Mobile makes those calls affordable and reliable.
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FAQs
What is the country code for Mexico?
It is +52. You dial it after your exit code (011 from the US/Canada) and before the ten-digit national number.
How do I call Mexico from the US?
Dial 011, then 52, then the area code and local number — ten digits in total after 52. Mexico City, for example, is 011 + 52 + 55 + the eight-digit number.
Do I still need to add a "1" for Mexican mobile numbers?
No. Since 2020, mobiles use the same ten-digit format as landlines. Adding a "1" after 52 will cause the call to fail.
What is the WhatsApp code for Mexico?
It is the same as the dialing code: +52. Save contacts in WhatsApp using +52 followed by the full ten-digit number.
Can I send text messages to Mexican numbers?
Yes, using the same +52 format. Note that standard carrier SMS to Mexico may carry international charges, while app-based messaging does not.
What changed about Mexico's phone numbers in 2019?
On August 3, 2019, Mexico adopted a uniform ten-digit national format for all numbers. It removed the separate mobile dialing rules that existed before.
How do I find the area code for a specific Mexican city?
Major cities use known codes — 55 for Mexico City, 33 for Guadalajara, 81 for Monterrey. For smaller towns, search "[city name] Mexico area code" to confirm.
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