Guam vs São Tomé and Príncipe
São Tomé and Príncipe has 1.4× the population of Guam: 240,254 vs 168,999, a gap of 71,255. São Tomé and Príncipe is growing faster (+1.98% vs +0.73% a year), adding about 4,765 people a year against +1,226. At these source-year rates the modelled relative population gap is widening. Guam is the older society: 13.1% aged 65+ against 3.9% in São Tomé and Príncipe, while São Tomé and Príncipe has more children (37.5% under 15 vs 25.9%). People in Guam live 7.5 years longer on average (77.4 vs 69.9). GDP per capita is 10.2× higher in Guam ($41,833 vs $4,084).
Country/territory population bases: World Bank 2025 (Guam) and 2025 (São Tomé and Príncipe); growth years 2025 / 2025. Annual source values, not live counts; years may differ. Growth is national, not local.
Guam vs São Tomé and Príncipe — side by side
 Guam |  São Tomé and Príncipe | |
|---|---|---|
| Population | 168,9992025 | 240,2542025 |
| Growth rate / yr | +0.73%2025 | +1.98%2025 |
| Births per 1,000 | 17.32024 | 28.12024 |
| Deaths per 1,000 | 6.92024 | 5.52024 |
| Children per woman | 2.752024 | 3.602024 |
| Life expectancy | 77.4 yrs2024 | 69.9 yrs2024 |
| Aged 0–14 | 25.9%2025 | 37.5%2025 |
| Aged 65+ | 13.1%2025 | 3.9%2025 |
| Density | 308.3 /km²2023 | 240.5 /km²2023 |
| Area | 540 km²2023 | 960 km²2023 |
| Urban population | 94.2%2025 | 69.2%2025 |
| Net migration / yr | -4932025 | -6502025 |
| GDP per capita | $41,8332022 | $4,0842025 |
| Country population rank (available records) | #184 | #181 |
| Base / world population (World Bank 2025) | 0.00% | 0.00% |
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). Guam: 2.4× from 1960 to 2025; São Tomé and Príncipe: 3.5× 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: East Asia & Pacific · Sub-Saharan Africa · rankings
Guam: Guam vs São Tomé and Príncipe, Guam vs Samoa, Guam vs Saint Lucia, Guam vs Channel Islands, Guam vs Curaçao, Guam vs Kiribati.
São Tomé and Príncipe: São Tomé and Príncipe vs New Caledonia, São Tomé and Príncipe vs Barbados, São Tomé and Príncipe vs French Polynesia, São Tomé and Príncipe vs Samoa, São Tomé and Príncipe vs Saint Lucia, São Tomé and Príncipe vs Guam.
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This page is a structured reference entry. Its sources, geographic definition and reference dates determine what the figures mean; it is not independent reporting about the causes of change. Read the accompanying explanation before comparing different places or vintages.