Calling Latvia from the United States explained:

• 011 - US exit code; dial first for international calls made from the USA or Canada
• 371 - Country Code for Latvia
• phone number - 8 digits
• sample call from US to a landline in Riga: 011 371 6??? ????

How to dial to Latvia cellular:

• dialing format for calls to a cell phone: 011 371 2??? ????

Phone Books:

• SpravkaRU.net - people search
• 1188.lv - business directory