Bulgaria

Country in Southeast Europe

Bulgaria is a country in Southeast Europe, with its capital in Sofia. About 6.4 million people live there (2025), making it the 110th most populous of the 195 countries. At 110,879 km², it is the 103rd largest country by area. It borders Greece, North Macedonia, Romania, Serbia and Turkey.

Bulgaria at a glance

Capital: Sofia
Population (2025): 6.4 million
Area: 110,879 km²
Density: 58 per km²
Official language: Bulgarian
Currency: Euro
People: Bulgarian
Calling code: +359
Internet domain: .bg
Coast: Has a coastline

Where is Bulgaria?

How Bulgaria compares

Population rank

110th of 195

21st of 45 in Europe

Size rank

103rd of 195

15th of 45 in Europe

Crowding

58 per km²

More crowded than 34% of countries

Similar in size: Liberia (111,369 km²).
Similar population: Republic of the Congo (6.5 million).
The Euro is also used in 37 other places: Andorra, Austria, Belgium, Croatia, Cyprus, Estonia and 31 more.
Bulgarian is not an official language anywhere else.

The flag of Bulgaria

Flags that look like it

Hungary

How to tell them apart: Hungary runs red, white and green from the top; Bulgaria runs white, green and red.

Play Guess the Flag →·Play Guess the Country →

Would you recognise Bulgaria?

Its outline

In Country Shapes you name places from their outline alone.

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How players do with Bulgaria

Every answer in DodoThinks games is counted anonymously. This is how players have done with Bulgaria so far, from 840 answers up to November 2026.

On the map

52% right

74th hardest of 176 · 638 answers

Its flag

80% right

85th hardest of 145 · 66 answers

Its capital

89% right

41st hardest of 58 · 136 answers

Players find Bulgaria on the map in 52% of tries. The most common wrong answer is Romania.
Players recognise the flag of Bulgaria in 80% of tries.
Players know that the capital of Bulgaria is Sofia in 89% of tries.

Find it on the map →·Guess the Flag →·Capitals quiz →

Countries that border Bulgaria

Bulgaria borders 5 countries: Greece, North Macedonia, Romania, Serbia and Turkey.

Quick quiz: Bulgaria

3 questions. Tap an answer to check it.

1. Which is the flag of Bulgaria?
2. What is the capital of Bulgaria?
3. Which of these borders Bulgaria?

Guess the Flag Capitals quiz Find it on the map

Questions about Bulgaria

Is Bulgaria a country?

Yes. Bulgaria is an independent country and one of the 193 member states of the United Nations.

What is the capital of Bulgaria?

The capital of Bulgaria is Sofia.

Which countries border Bulgaria?

Bulgaria borders 5 countries: Greece, North Macedonia, Romania, Serbia and Turkey.

How many countries border Bulgaria?

5. Bulgaria shares a land border with 5 countries.

How big is Bulgaria?

Bulgaria covers 110,879 km², about the same size as Liberia (111,369 km²).

Is Bulgaria hard to find on a map?

On DodoThinks map quizzes, players find Bulgaria in 52% of 638 tries, 74th hardest of 176 places with enough answers to count. The most common wrong answer is Romania.

Which flags look like the flag of Bulgaria?

Hungary. Hungary runs red, white and green from the top; Bulgaria runs white, green and red.

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