Calling Costa Rica from the United States explained:

• 011 - US exit code; dial first for international calls made from the USA or Canada
• 506 - Country Code for Costa Rica
• Phone Number - 8 digits, fixed/VoIP lines start with either digit 2 or 4
• US to Costa Rica international dialing format: 011 506 ???? ????

How to dial to Costa Rica cellular:

• dialing format for calls to a cell phone: 011 506 X??? ????
• X can be 5, 6, 7 or 8

Phone Books:

• 1155.cr - business and people search, in Spanish
• Paginas Amarillas - in Spanish