To call Costa Rica from the United States, you will need to follow these steps:

Dial the exit code for the United States, which is 011. This code is used to initiate an international call from the United States.

Dial the country code for Costa Rica, which is 506.

Dial the area code for the location you are trying to reach in Costa Rica. Costa Rica has a system of 8-digit phone numbers, and the area code is the first two digits. For example, if you are trying to call a phone number in San José, the area code would be 22.

Dial the remaining 6 digits of the phone number you are trying to reach.

Here’s an example of what a complete phone number might look like: 011-506-22-123456

Keep in mind that you will also need to account for the time difference between the United States and Costa Rica. Costa Rica is in the Central Standard Time Zone, which is one hour ahead of the Eastern Standard Time Zone (ET) and two hours ahead of the Pacific Standard Time Zone (PT).