Romania's population stood at 19.05 million in the 2021 census, a decline from 23.2 million in 1990. Ethnic Romanians constitute 88.9 percent of the population, with Hungarians forming the largest minority at 6.0 percent, concentrated in Transylvania along the eastern border with Hungary. The Roma population, officially recorded at 3.3 percent, represents a significant undercount that many researchers place closer to 8-10 percent based on community surveys and demographic modeling. Germans, who numbered over 700,000 before 1945, now total fewer than 36,000 following waves of emigration to West Germany in the 1970s and 1980s, then a mass departure after 1989. Ukrainians, Serbs, Turks, and Tatars form smaller communities, primarily in Dobruja and along the western border regions. The population density averages 80.9 persons per square kilometer, with pronounced concentration in urban areas which house 54 percent of residents. Bucharest holds 1.83 million people within city limits, while Cluj-Napoca, Timișoara, Iași, and Constanța each exceed 250,000. Romania lost approximately 3.4 million residents to emigration between 1990 and 2020, with Italy, Spain, Germany, and the United Kingdom receiving the largest shares. The total fertility rate in 2021 measured 1.6 children per woman, well below replacement level, while the median age has risen to 43 years.
Romanian descends from Latin as spoken in the eastern Roman provinces of Dacia and Moesia, making it the only Romance language in Eastern Europe. The continuity theory, accepted by most Romanian scholars, holds that Latin-speaking populations remained in the Carpathian-Danubian region after Roman withdrawal in 271 CE, preserving and evolving Latin into Romanian through centuries of migration and invasion. Hungarian and some Western scholars advance the immigrationist theory, proposing that Romanian speakers migrated north across the Danube from the Balkans between the 10th and 13th centuries. Linguistic evidence shows Romanian shares approximately 77 percent lexical similarity with Italian, while containing substantial Slavic borrowing estimated at 10-15 percent of core vocabulary, reflecting medieval contact with Bulgarian and Serbian. Turkish, Hungarian, and Greek contributed additional layers during respective periods of influence. The Cyrillic alphabet served as the written standard from the earliest documents in the 16th century until 1860-1862, when Romanian intellectuals adopted Latin script in a deliberate alignment with Western Europe. The Romanian Academy, founded in 1866, standardized orthography based on the Wallachian dialect spoken in Muntenia, though pronunciation in Moldavia and Transylvania shows notable regional variation. Approximately 24 million people speak Romanian worldwide, including populations in Moldova where it serves as the official language despite periodic political renaming to "Moldovan."
The archaeological record documents human habitation across Romania from the Paleolithic period, with significant Neolithic cultures emerging after 6000 BCE. The Cucuteni-Trypillia culture, flourishing from approximately 5500 to 2750 BCE in Moldavia and extending into modern Ukraine, produced elaborate painted pottery and settlements reaching 15,000 inhabitants. Bronze Age peoples left thousands of tumuli across the plains, while the Dacian tribes coalesced during the Iron Age into a confederation that controlled the Carpathian basin by the 1st century BCE. Under King Burebista, who ruled from approximately 82 to 44 BCE, Dacian territory expanded from modern Slovakia to the Black Sea coast, establishing a capital at Sarmizegetusa Regia in the Orăștie Mountains. Burebista's assassination in 44 BCE fragmented Dacian unity, but King Decebalus reunited the kingdom after 87 CE and fortified the mountain strongholds. Roman Emperor Trajan launched two campaigns, in 101-102 and 105-106 CE, conquering Dacia after siege warfare that Trajan's Column in Rome depicts in 2,662 figures across a 200-meter spiral frieze. Rome established Dacia as a province with colonists from across the empire, exploiting gold mines that yielded an estimated 165,000 kilograms during the occupation. The Romans withdrew military and administrative structures in 271 CE under Emperor Aurelian, facing pressure from Gothic invasions, though the degree of population continuity remains debated.
The period from 271 to approximately 900 CE, often termed the "Dark Ages" in Romanian historiography, left sparse written records but substantial archaeological evidence of fortified settlements and metalworking sites. Gothic, Hunnic, Gepid, Avar, and Slavic peoples traversed or settled the region in successive waves, while the Bulgarian Empire extended control north of the Danube between the 7th and 10th centuries. Magyar tribes crossed the Carpathians around 895-900, establishing the Kingdom of Hungary which would progressively incorporate Transylvania over the following three centuries. The first Romanian political formations recorded in external sources emerge in the 14th century: Wallachia under Basarab I, whose forces defeated Hungarian King Charles I at Posada in 1330, and Moldavia under Dragoș and consolidated by Bogdan I around 1359. These principalities maintained autonomy through tribute payments and diplomatic maneuvering between the expanding Ottoman Empire, the Kingdom of Hungary, and the Kingdom of Poland. The Ottomans established suzerainty over Wallachia after 1417 and Moldavia after 1538, extracting annual tribute but generally preserving internal administration under native rulers. Transylvania became an autonomous principality under Ottoman protection in 1570 after the partition of medieval Hungary, entering a golden age under Prince Gabriel Bethlen from 1613 to 1629 and Prince George I Rákóczi from 1630 to 1648.
Vlad III, ruling Wallachia during 1448, 1456-1462, and 1476, implemented campaigns of extraordinary violence against Ottoman forces, Saxon merchants he viewed as economic rivals, and boyars who had assassinated his father Vlad II Dracul in 1447. German and Russian pamphlets from the 1480s and 1490s describe mass impalement of approximately 20,000-30,000 people during his second reign, though these figures likely include exaggeration for political effect. Ottoman chronicles from the period confirm punitive raids and psychological warfare tactics, while the name "Dracula" derives from "Dracul" meaning dragon or devil, referencing his father's membership in the Order of the Dragon. Bram Stoker's 1897 novel connected the name to a Transylvanian vampire legend but drew minimal historical detail from the actual ruler, whose legacy in Romania emphasizes resistance to Ottoman expansion. Stephen III of Moldavia, called Stephen the Great, ruled from 1457 to 1504 and won 46 of 48 battles, defeating Hungarian, Polish, and Ottoman armies while constructing 44 churches and monasteries, many featuring the exterior frescoes that distinguish Moldavian religious architecture. His victory over a massive Ottoman force at Vaslui in 1475, with approximately 40,000 Moldavians defeating 120,000 Ottoman troops, ranks among the most decisive defeats the Ottoman Empire suffered during its expansion period. Michael the Brave briefly united Wallachia, Transylvania, and Moldavia under his rule in 1600, holding the territories for less than a year before assassination by Habsburg general Giorgio Basta's agents, but the symbolic importance of this first unification resonates in Romanian national consciousness.