The United States is the most developed country in the world. Be it education, business, or entrepreneurship, the United States has it all. In fact, some of the world’s biggest companies are in the US (e.g., Apple, Amazon, Microsoft, etc.). 

As of 2020, the US ranks on the top in GDP (nominal) and second in PPP (Purchasing Power Parity). Besides, it is one of the best countries to start a business in. 

If you are thinking of expanding your business to the United States, you would need a way to communicate with your customers (and they would need a method too). And, what’s a better way than a phone? 

How-to-Call-US-from-South-Korea middle 1

In this article, we will provide a step-by-step guide to calling the United States from South Korea. Let’s get started. 

How to Call the US from Korea?

Follow these steps to call the US from Korea. 

Step 1: Enter the South Korea exit code

Every country has exit codes that allow them to make calls to any international destination. In the case of South Korea phone number, it is 001. However, depending on your carrier, the code might vary to 002, 008, 00345, 00700, or 00388. 

Use this code before dialing any number outside of Korea. 

Step 2: Enter US Country Code

Just like the exit code, every country has a unique code that enables you to dial a phone number within the country. In the case of the US, it is 1. Dial this code after the Korea exit code. 

Step 3: Dial the local area code

After entering the South Korea code and US country code, it’s time to dial the local area code of the region you are trying to reach. There are 291 area codes in the United States. So, make sure you dial the right one. 

For your reference, here are the area codes for some of the major cities in the US. 

City Area Code
New Jersey201
Washington DC202
Los Angeles310
San Francisco 415
Miami 305

Step 4: Dial the seven-digit phone number

Lastly, dial the seven-digit phone number of the person you are trying to reach. 


So, your dialing format to the US (California) from Korea would look like this:


When to Call the US from South Korea?

It is essential to know the time zone difference between the US and Korea. South Korea is 13 hours ahead of Washington DC, US. 

As of writing this article, the time in:

South Korea: 8:35 pm, Saturday

Washington DC, US: 7:35 am, Saturday

Using a Virtual Phone System to Call the US From Korea

Though dialing a number in the United States from South Korea is simple, it is costly. Besides, people are always reluctant to pick an unknown international number. That’s the problem a virtual phone system can solve. 

A virtual phone system allows you to purchase local phone numbers that customers would pick and even take your business positively. Besides, your local (US) customers can contact you without incurring international charges. 

The best part about the US virtual phone numbers is that you don’t need to be physically present in the US to use local numbers. You can sit in South Korea and call your customers in the US as if you are in their city. 

Establishing a local presence also makes it easier to attract customers and build rapport with them

But that’s not it.

There are several other reasons to use a virtual phone system for your business. 

1- Reduce Calling Expenses

Since you will be making hundreds of calls (to attract customers), you are looking at a phone bill of thousands of dollars every month without a virtual phone system. 

But why spend international charges when you can pay less with local phone numbers. Calls to the United States from Korea with CallHippo business phone systems start from as low as $0.01.

2- Improve Your Advertising ROI

If your ads have a US virtual phone number with a local area code, more people are likely to call you than if you have an international number. You can even get featured in local directories and business listings. 

3- Work From Anywhere

A virtual phone system gives you the flexibility to work from anywhere in the world. Besides, you won’t have to stick to your desk to make or receive calls. For instance, with CallHippo mobile app, you can use your smartphone to manage business calls. This ensures you don’t miss an opportunity even if it comes outside your business hours (which is highly likely as the time zone in the US and Korea are different). 

4- Highly Scalable

As your business in the US grows, you will need more people to handle incoming and outgoing calls. However, with a traditional phone system, you will have to purchase hardware and install telephone lines in your office. 

On the other hand, a virtual phone system allows you to scale your sales and support team at little to no extra cost. All you will need to do is upgrade your premium or add a new user, which will cost you only a few dollars. 

5- Advanced Features

Entering a new market is never easy. However, a virtual phone system comes with a myriad of features, such as call recording and call center analytics, that can help you understand your potential customers better. 

You can then use the insights gathered using these features to better tailor your services and offerings to increase the chances of sales.

Wrapping Up

The United States is one of the best countries to expand your business. And when you do, follow the steps mentioned above to call your prospects in the US from Korea. Also, make sure to buy a US phone number to minimize your calling expenses and boost your advertising ROI.

Updated : April 20, 2021


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