Bulgaria

Republic of Bulgaria Република България
Capital and largest city	Sofia
Official languages	Bulgarian
Demonym	Bulgarian
Government	Unitary parliamentary republic
Legislature	National Assembly
Establishment
• First Bulgarian state established	681
• Principality established	3 March 1878
• Independence declared	22 September 1908
Area
• Total	110,994 km2 (42,855 sq mi)
Population
• 2021 census	6,519,789
Currency	Euro (EUR)
Time zone	UTC+2 (EET)
• Summer (DST)	UTC+3 (EEST)
Calling code	+359
ISO 3166 code	BG
Internet TLD	.bg

Bulgaria, officially the Republic of Bulgaria, is a country in southeastern Europe. It occupies the eastern part of the Balkans and has a coastline on the Black Sea. Romania lies to the north, Serbia and North Macedonia to the west, and Greece and Turkey to the south. Its capital and largest city is Sofia.

Bulgaria covers 110,994 square kilometres. The 2021 census recorded a population of 6,519,789. The official language is Bulgarian, which is written in the Cyrillic alphabet.

Geography

The Danube forms most of Bulgaria's northern border with Romania. The Danubian Plain extends southward from the river to the Balkan Mountains, which cross the centre of the country from west to east. The routes across the Danube include the bridge between Ruse and Giurgiu, which carries road and railway traffic between Bulgaria and Romania.

South of the Balkan Mountains lies the Upper Thracian Plain, crossed by the Maritsa River and its tributaries. The Rila, Pirin and Rhodope mountain ranges occupy much of southern and southwestern Bulgaria. Musala, in the Rila Mountains, is the highest point in Bulgaria and the Balkan Peninsula at 2,925 metres.

The Black Sea coast extends along the eastern border. Varna and Burgas are the main coastal cities and ports. Other major cities include Plovdiv, Ruse, Stara Zagora, Pleven and Veliko Tarnovo.

Bulgaria has a mainly temperate continental climate. The Black Sea moderates conditions along the coast, while southern valleys experience stronger Mediterranean influence. Mountain areas have colder winters, lower average temperatures and heavier snowfall.

History

The territory of Bulgaria was inhabited in antiquity by Thracian peoples and later became part of the Roman Empire. After the division of the empire, much of the region remained under eastern Roman and Byzantine authority. Slavic communities settled throughout the Balkans during the sixth and seventh centuries.

The Bulgarian state established under Asparuh was recognised in 681. It developed into the First Bulgarian Empire, which became a major power in the Balkans. Bulgaria adopted Christianity during the reign of Boris I in the ninth century. Literary schools at Preslav and Ohrid helped establish Old Church Slavonic as a written language and supported the development and spread of the Cyrillic alphabet.

The Byzantine Empire conquered the First Bulgarian Empire in 1018. Bulgarian rule was restored after the uprising led by Ivan Asen I and Peter IV in 1185, beginning the Second Bulgarian Empire. Tarnovo became its political and religious centre. Ottoman forces gradually conquered the Bulgarian lands during the late 14th century, and the last major Bulgarian strongholds fell by 1396.

Bulgarian national movements developed during the 18th and 19th centuries through education, religious organization and opposition to Ottoman authority. The April Uprising of 1876 was followed by the Russo-Turkish War of 1877–1878. The settlement reached at the Congress of Berlin established the autonomous Principality of Bulgaria on 13 July 1878. Eastern Rumelia united with the principality on 6 September 1885.

Bulgaria declared full independence from the Ottoman Empire on 22 September 1908. The country fought in the Balkan Wars and later participated in both world wars. A referendum held on 8 September 1946 abolished the monarchy, and the People's Republic of Bulgaria was proclaimed on 15 September.

Communist rule ended in 1989. Political parties were legalised, elections were held and state-owned industries were gradually reorganized or privatised. The constitution adopted on 12 July 1991 established the present parliamentary republic.

Government and administration

Bulgaria is a unitary parliamentary republic. The president is the head of state and is directly elected. Executive authority is exercised by the Council of Ministers under the prime minister. Legislative authority belongs to the unicameral National Assembly.

The judiciary consists of regional and district courts, courts of appeal, the Supreme Court of Cassation and the Supreme Administrative Court. The Constitutional Court rules on constitutional disputes and the validity of legislation.

Bulgaria is divided into 28 provinces. The provinces are divided into municipalities, which are responsible for local administration and public services. Sofia is both the national capital and a province with its own municipal government.

Economy and transport

Bulgaria has a mixed economy based on services, manufacturing, energy, agriculture, construction and tourism. Industrial production includes machinery, electrical equipment, chemicals, pharmaceuticals, metals, food products and vehicle components. Agricultural areas produce cereals, sunflower seeds, vegetables, fruit, grapes and tobacco.

Tourism is concentrated around the Black Sea coast, Sofia, historic towns, mountain resorts, monasteries and archaeological sites. The Rila, Pirin and Rhodope mountains support winter sports and hiking, while the coast contains the principal summer tourism centres.

Bulgaria adopted the euro on 1 January 2026. The Bulgarian National Bank forms part of the national financial and monetary system.

Sofia is the main road, railway and air transport centre. Routes westward connect the capital with Serbia and North Macedonia, while southern corridors lead toward Greece and Turkey. Roads and railways crossing the Danube connect Bulgaria with Romania and the wider Central European transport network.

Varna and Burgas are the principal Black Sea ports. Ruse, Lom and Vidin serve river traffic on the Danube. Sofia Airport is the largest airport, while airports at Varna and Burgas handle seasonal and international traffic.

Demographics and culture

Ethnic Bulgarians form the majority of the population. Turkish and Roma communities are the largest minorities. Population decline since the late 20th century has resulted from low birth rates, an ageing population and sustained emigration.

Bulgarian is a South Slavic language and the official language of the state. Turkish and Romani are spoken within their respective communities. Eastern Orthodox Christianity is the largest religious tradition, while Islam is the largest minority religion.

Bulgarian culture developed through Thracian, Slavic, Byzantine, Ottoman and modern European influences. Orthodox churches, monasteries, medieval fortresses and Ottoman-period buildings remain part of the country's architectural heritage. Traditional culture includes regional music, dance, embroidery, woodcarving and seasonal customs.

Sofia is the main centre of national government, education and cultural institutions. Plovdiv, Veliko Tarnovo, Varna and Ruse also contain major museums, universities, theatres and historic districts.

See also

• Southern Europe
• Balkans
• Black Sea
• Danube
• Romania
• Greece
• North Macedonia
• Euro