Eritrea vs Mongolia
Eritrea has about the same population as Mongolia: 3,607,003 vs 3,568,978, a gap of 38,025. Eritrea is growing faster (+2.00% vs +1.25% a year), adding about 72,116 people a year against +44,466. Mongolia is the older society: 5.4% aged 65+ against 4.3% in Eritrea, while Eritrea has more children (37.6% under 15 vs 31.6%). Eritrea is 12.8× as densely populated (28.6 vs 2.2 people per km²). People in Mongolia live 3.5 years longer on average (72.4 vs 68.9). GDP per capita is 10.3× higher in Mongolia ($7,108 vs $689).
Country/territory population bases: World Bank 2025 (Eritrea) and 2025 (Mongolia); growth years 2025 / 2025. Annual source values, not live counts; years may differ. Growth is national, not local.
Eritrea vs Mongolia — side by side
 Eritrea |  Mongolia | |
|---|---|---|
| Population | 3,607,0032025 | 3,568,9782025 |
| Growth rate / yr | +2.00%2025 | +1.25%2025 |
| Births per 1,000 | 28.72024 | 16.92024 |
| Deaths per 1,000 | 6.02024 | 5.52024 |
| Children per woman | 3.682024 | 2.502024 |
| Life expectancy | 68.9 yrs2024 | 72.4 yrs2024 |
| Aged 0–14 | 37.6%2025 | 31.6%2025 |
| Aged 65+ | 4.3%2025 | 5.4%2025 |
| Density | 28.6 /km²2023 | 2.2 /km²2023 |
| Area | 121,766 km²2023 | 1,564,116 km²2023 |
| Urban population | 34.5%2025 | 71.1%2025 |
| Net migration / yr | -6,6982025 | +792025 |
| GDP per capita | $6892011 | $7,1082025 |
| Country population rank (available records) | #131 | #132 |
| Base / world population (World Bank 2025) | 0.04% | 0.04% |
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). Eritrea: 3.7× from 1960 to 2025; Mongolia: 3.7× 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: Sub-Saharan Africa · East Asia & Pacific · rankings
Eritrea: Eritrea vs Panama, Eritrea vs Georgia, Eritrea vs Croatia, Eritrea vs Mongolia, Eritrea vs Uruguay, Eritrea vs Puerto Rico.
Mongolia: Mongolia vs Georgia, Mongolia vs Croatia, Mongolia vs Eritrea, Mongolia vs Uruguay, Mongolia vs Puerto Rico, Mongolia vs Bosnia and Herzegovina.
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