Bulgaria vs Republic of the Congo
Republic of the Congo has about the same population as Bulgaria: 6,484,437 vs 6,433,302, a gap of 51,135. Republic of the Congo is growing faster (+2.36% vs −0.13% a year), adding about 153,273 people a year against −8,114. Bulgaria is the older society: 22.2% aged 65+ against 3.1% in Republic of the Congo, while Republic of the Congo has more children (39.9% under 15 vs 14.4%). Bulgaria is 3.3× as densely populated (59.4 vs 18.1 people per km²). People in Bulgaria live 9.8 years longer on average (75.8 vs 66.0). GDP per capita is 8.1× higher in Bulgaria ($20,328 vs $2,515).
Country/territory population bases: World Bank 2025 (Bulgaria) and 2025 (Republic of the Congo); growth years 2025 / 2025. Annual source values, not live counts; years may differ. Growth is national, not local.
Bulgaria vs Republic of the Congo — side by side
 Bulgaria |  Republic of the Congo | |
|---|---|---|
| Population | 6,433,3022025 | 6,484,4372025 |
| Growth rate / yr | −0.13%2025 | +2.36%2025 |
| Births per 1,000 | 8.32024 | 30.42024 |
| Deaths per 1,000 | 15.62024 | 6.22024 |
| Children per woman | 1.722024 | 4.112024 |
| Life expectancy | 75.8 yrs2024 | 66.0 yrs2024 |
| Aged 0–14 | 14.4%2025 | 39.9%2025 |
| Aged 65+ | 22.2%2025 | 3.1%2025 |
| Density | 59.4 /km²2023 | 18.1 /km²2023 |
| Area | 110,997 km²2023 | 342,000 km²2023 |
| Urban population | 74.2%2025 | 64.1%2025 |
| Net migration / yr | -2,9612025 | -2,9992025 |
| GDP per capita | $20,3282025 | $2,5152025 |
| Country population rank (available records) | #111 | #110 |
| Base / world population (World Bank 2025) | 0.08% | 0.08% |
Highlighted cell = the higher value (not "better"). Small print under each value is its own data year. Source: World Bank; country/territory population bases may have different years. These are not live counts.
Population since 1960
World Bank population history (not the separate UN WPP timeline). Bulgaria: 0.8× from 1960 to 2025; Republic of the Congo: 6.1× from 1960 to 2025. Left: absolute population. Right: each series indexed to its own first available year = 100; baseline years may differ.
More comparisons
Regions: Europe & Central Asia · Sub-Saharan Africa · rankings
Bulgaria: Bulgaria vs Nicaragua, Bulgaria vs Serbia, Bulgaria vs Republic of the Congo, Bulgaria vs El Salvador, Bulgaria vs Singapore, Bulgaria vs Denmark.
Republic of the Congo: Republic of the Congo vs Paraguay, Republic of the Congo vs Nicaragua, Republic of the Congo vs Serbia, Republic of the Congo vs Bulgaria, Republic of the Congo vs El Salvador, Republic of the Congo vs Singapore.
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