This is the US Embassy in Spain. There is a US Consulate in Barcelona and also a US Embassy in Madrid. If you are visiting the US you can apply for your US visa as one of these US representative offices. We have listed the contact details below with a map to the consulate and to the US Embassy in Madrid.
US Embassy in Madrid
Call them for more information about getting a new US passport, registering your marriage or the birth of your child if you are a US citizen. The US Embassy in Madrid is close to the Thai Embassy in Spain. See below for the location. If you are getting married then see the US fiancee visa process from Spain for your fiancee. See also the US visa financial requirements on this website. The US visa medical examination as well as see if you are ineligible for a US visa.
Now if you lost your passport then this need to be reported to the police. The police report will be needed to obtain a new passport as well as by Spanish immigration to move you visa from the lost passport to the new passport.
US Embassy Madrid
Address: Calle de Serrano, 75, 28006 Madrid, Spain
Phone: (+34) 91-587-2200
Fax: (+34) 91-587-2303
US Consulate in Barcelona
Address: Paseo Reina Elisenda de Montcada, 23, 08034 Barcelona, España
Phone: (+34) 93 280 22 27
If its about death, arrest, or hospitalization anywhere in Spain except the Barcelona area*
Call (+34) 91 587 2200.
If is about death, arrest, or hospitalization of a U.S citizen in the Barcelona area*
Call (+34) 93 280 2227.
For Emergencies anywhere in Spain outside of Office Hours: (+34) 91 587 2200.
*Barcelona area includes Catalonia, Aragon, and Andorra.