How to Call the US from Mexico: Dialing Code & Steps

How to Call the US from Mexico is easy once you know the correct dialing format and country codes. Whether you are calling a friend, family member, or business in the United States, you need to use Mexico’s international access code, the US country code, and the 10-digit US phone number.

In this guide, we’ll show you the exact steps to call the US from Mexico using a mobile phone or landline, along with the dialing codes you need to know.

How to Call the US from Mexico?

To call the United States from Mexico, dial 00, followed by the US country code 1, the three-digit area code, and the seven-digit phone number.

You can also use the +1 format on a mobile phone.

For example, if you want to call a number in New York, you can dial:

00 1 212 555 1234

The dialing format is the same for US cell phones and landlines. You do not need a separate dialing format for each type of phone.

What Each Part of the Number Means?

Number	Meaning
00	International exit code used in Mexico
1	Country code for the United States
212	Example US area code
555 1234	Seven-digit local number

The complete number contains 10 digits after the country code. Use the full area code and local number when placing the call.

How to Call the US from Mexico Using a Cell Phone

Calling a US number from a mobile phone in Mexico is simple. You can use the international format with the plus sign.

Steps to make a call

Open the phone app on your mobile phone.
Enter +1.
Add the three-digit US area code.
Enter the seven-digit local phone number.
Press the call button.

For example, to call a fictional Los Angeles number, dial:

+1 213 555 1234

You can usually enter the plus sign by pressing and holding the 0 key on your phone’s dial pad.

What if you are using your US SIM card in Mexico?

If you are traveling in Mexico with a US SIM card, check whether your mobile plan includes international roaming and calls to US numbers.

Your carrier may charge additional fees depending on your plan. Confirm the calling and roaming rates before making long calls.

How to Call the US from Mexico Using a Landline

You can also call the United States from a landline in Mexico.

The standard international dialing format is:

00 + 1 + US area code + seven-digit phone number

Step-by-step dialing instructions

Pick up the landline phone.
Dial 00 to start an international call.
Enter 1 for the United States.
Dial the three-digit area code.
Enter the seven-digit local phone number.

For example, to call a fictional Chicago number, dial:

00 1 312 555 1234

Some office phone systems require you to dial an additional digit to get an outside line. If the call does not connect, check with your phone service provider or office administrator.

The cost of the call depends on your landline provider and calling plan.

What Is the Country Code for the United States?

The country calling code for the United States is +1.

It is used when calling a US phone number from another country. The United States shares this country code with Canada and several other countries and territories in the North American Numbering Plan.

When calling from Mexico, you can use either of these formats:

From a landline: 00 1 + 10-digit US number
From a mobile phone: +1 + 10-digit US number

The plus sign represents the international access code used by the country or network from which you are calling. It is not an extra digit that you need to dial after 00.

US Area Codes for Major Cities

The United States has many area codes, so the table below includes examples from major cities.

City	State	Area code
New York City	New York	212
Los Angeles	California	213
Chicago	Illinois	312
Atlanta	Georgia	404
San Francisco	California	415
Austin	Texas	512
Boston	Massachusetts	617
Houston	Texas	713
Miami	Florida	786
Dallas	Texas	972
Washington, D.C.	District of Columbia	202

These are examples, not a complete list. Many cities have multiple area codes, so always use the area code provided with the phone number.

How Much Does It Cost to Call the US from Mexico?

The cost of calling the United States from Mexico depends on your phone service and calling plan.

Some plans include calls to the US, while others charge separately for international calls. Your provider may also apply additional fees.

Factors that affect the cost

Your mobile or landline provider.
Whether your plan includes calls to the US.
The length of the call.
Whether you are using a Mexican SIM or a US SIM with roaming.
Whether you are calling through a traditional phone service or VoIP.

For example, a one-minute call and a 30-minute call may have different total costs if your provider charges by the minute.

How to Call the US from Mexico for Free or Cheap?

If you need to call the United States regularly, you can compare different calling methods to find an option that fits your needs.

i. Use Internet Calling Apps

Apps such as WhatsApp and FaceTime allow users to make voice calls over the internet. Both people generally need access to the same app and an internet connection.

These apps can be useful when you want to talk to friends or family without making a traditional international phone call.

However, they are not the same as dialing a regular US phone number. Internet data charges may also apply, depending on your connection.

ii. Use a VoIP Service

VoIP stands for Voice over Internet Protocol. It allows voice calls to travel over an internet connection rather than a traditional telephone line.

Some VoIP services let users call regular phone numbers, including US numbers. Others focus on calls between users of the same service.

Before choosing a service, check:

Whether it supports calls to regular US phone numbers.
Whether the plan includes calls to the United States.
Whether you need to purchase a phone number or calling credits.
Whether the service works on your mobile phone or computer.

For business users, VoIP can also provide features such as call recording and integration with other business applications.

iii. Consider a Calling Card

International calling cards may provide another way to make calls from Mexico to the US.

Check the card’s instructions, access number, and billing increments before using it. A card that bills in larger increments may charge for more minutes than you actually use.

Always compare the total cost and conditions before choosing a calling method.

FAQs on Mexico to US Dialing Code

Q1. What is the Mexico to US dialing code?

The international dialing format from Mexico to the United States is 00 1, followed by the 10-digit US phone number. On a mobile phone, you can use +1 instead of 00 1.

Q2. How to call the US from Mexico for free?

You may be able to make calls without traditional international calling charges by using an internet calling app, such as WhatsApp or FaceTime, when both people can use the same app. Internet data charges may still apply.

Q3. How to call Mexico internationally?

To call a Mexican phone number from another country, use that country’s international access code, followed by Mexico’s country code 52 and the 10-digit Mexican phone number.

For example, from the US, dial 011 52 followed by the Mexican number. On a mobile phone, you can use +52 instead.

Q4. Can I call Mexico for free?

Some calling apps and phone plans may include calls to Mexico. Whether a call is free depends on the service, the plan, and how you make the call.

Q5. Why won’t my phone let me call Mexico?

If you cannot call a Mexican number from your phone, check that you have entered the correct international dialing format.

Other possible reasons include international calling restrictions, insufficient calling credit, roaming settings, or network problems.

Final Remarks

Calling the United States from Mexico is straightforward when you know the correct dialing format. Use 00 1 followed by the 10-digit US phone number when calling from a landline, or use +1 from a mobile phone.

Remember to include the area code and check your calling plan before making an international call.

Whether you are contacting friends, family, or business associates, choosing the right calling method can help you stay connected while managing your phone expenses.

How to Call the US from Mexico: Dialing Code & Steps