For visa information, please visit:

http://www.bulgaria-embassy.org

or

http://www.consulbulgaria-ny.org

Citizens of the United States, traveling on regular passports, are not required visas for a stay in Bulgaria not exceeding 90 days, within a period of 6 months, but they should be able, upon request, to show evidence of a medical insurance, valid for Bulgaria, covering the duration of their stay.

Single entry visas are valid for entering Bulgaria not later than 3 months of the date of issue.  

For the residents of the states of:
Connecticut, Maine, Massachusetts, New Hampshire, New Jersey, New York, Pennsylvania, Rhode Island and Vermont
Bulgarian Consulate General - New York City
Tel: (212) 935 4646, Fax: (212) 319 5955
http://www.consulbulgaria-ny.org

Residents of the rest of the states please contact:
BULGARIAN EMBASSY - Washington DC
CONSULAR OFFICE
Tel: (202) 387-7969, Fax: (202) 234-7973
http://www.bulgaria-embassy.org

U.S. Companies that require travel of foreign businesspersons to the United States should allow sufficient time for visa issuance if required. Visa applicants should go to the following links.

State Department Visa Website: http://travel.state.gov/visa/
United States Visas: http://www.unitedstatesvisas.gov/