Barcelona is not a country: it is a city. It is in the country Spain. Yes, they do speak Spanish in Spain.
The official language of Barcelona, which is in the region of Catalonia, is Catalan. However, most of the people who live in Barcelona speak both Catalan and Castillan Spanish, as well as English.
The official language spoken in Barcelona is Catalan, although Spanish is also widely spoken.
Barcelona is the largest city in Europe where Catalan is spoken. It is the capital of Catalonia and a major cultural and economic hub in Spain.
The official languages of Barcelona are both Catalan and Spanish. Catalan is the predominant language in Barcelona and is often used in official settings, while Spanish is also widely spoken as a second language.
If "Spanish" means Castilian (standard) Spanish, then no, it is not the language of Barcelona and the region of Catalonia, though it is generally understood. The principal language in that northeastern part of Spain is Catalan, which is not a dialect, but a separate language (just as Portuguese is a separate language, not a dialect of Spanish). However, most signs in Barcelona and many other parts of the region of Catalonia are bilingual. One can speak Castilian (Spanish) there and be understood by nearly everyone. But the people living in Barcelona and other towns of the region of Catalonia speak Catalan among themselves.
Castilian and Catalan Castilian, also means Spanish, is the culture one would usually associate with most of Spain. It's also fair to call it simply Spanish. This is not the indigenous culture to Barcelona, but many Spaniards have migrated to the city. Catalan, a regional culture in eastern Spain. The Catalan people speak their own language (called Catalan) and usually speak Spanish too. Catalan and Spanish have many similarities, but are clearly separate languages, and it is argued by many that Catalan is closer to French than to Spanish. Catalan culture shares many things with that of southern France. Further Reading, on Wikipedia: Spanish Language, Catalan Language, Barcelona, Catalonia, Valencia, Spain
The people who live in Barcelona are called barcelonians in English and barceloní/barcelonina in catalan, the local language. Barcelona is the capital city of Catalonia and its habitants are called catalans in English and catalá/catalana in catalan.
The main language spoken in Barcelona is Catalan, which is an official language in Catalonia. Spanish is also widely spoken in Barcelona, especially in tourist areas.
Barcelona speaks two languages, Spanish and Catalan, because Catalonia, the region where Barcelona is located, has its own distinct culture, history, and language. Both Spanish and Catalan are official languages in the region, reflecting its diverse cultural heritage.
Catalan
The two official languages spoken in Barcelona are Catalan and Spanish. Catalan is the primary language spoken in Catalonia, including Barcelona, while Spanish is also widely spoken and understood in the region.
Catalan in addition to Spanish. It is one of the co-official languages in Catalonia, and widely used in the region for daily communication, education, and government affairs.