Guam vs Kiribati
Guam has 1.2× the population of Kiribati: 168,999 vs 136,488, a gap of 32,511. Kiribati is growing faster (+1.45% vs +0.73% a year), adding about 1,984 people a year against +1,226. Using continuous exponential growth from the stated base year, if these rates held, Kiribati would overtake Guam in about 29 years (from the 2025 population bases, around 2054) — a projection, not a forecast. Guam is the older society: 13.1% aged 65+ against 4.4% in Kiribati, while Kiribati has more children (34.4% under 15 vs 25.9%). Guam is 1.9× as densely populated (308.3 vs 163.6 people per km²). People in Guam live 10.8 years longer on average (77.4 vs 66.6). GDP per capita is 16.3× higher in Guam ($41,833 vs $2,559).
Country/territory population bases: World Bank 2025 (Guam) and 2025 (Kiribati); growth years 2025 / 2025. Annual source values, not live counts; years may differ. Growth is national, not local.
Guam vs Kiribati — side by side
 Guam |  Kiribati | |
|---|---|---|
| Population | 168,9992025 | 136,4882025 |
| Growth rate / yr | +0.73%2025 | +1.45%2025 |
| Births per 1,000 | 17.32024 | 25.32024 |
| Deaths per 1,000 | 6.92024 | 7.12024 |
| Children per woman | 2.752024 | 3.122024 |
| Life expectancy | 77.4 yrs2024 | 66.6 yrs2024 |
| Aged 0–14 | 25.9%2025 | 34.4%2025 |
| Aged 65+ | 13.1%2025 | 4.4%2025 |
| Density | 308.3 /km²2023 | 163.6 /km²2023 |
| Area | 540 km²2023 | 810 km²2023 |
| Urban population | 94.2%2025 | 63.4%2025 |
| Net migration / yr | -4932025 | -4622025 |
| GDP per capita | $41,8332022 | $2,5592025 |
| Country population rank (available records) | #184 | #187 |
| 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; Kiribati: 2.9× from 1960 to 2025. Left: absolute population. Right: each series indexed to its own first available year = 100; baseline years may differ.
More comparisons
Region: East Asia & Pacific · 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.
Kiribati: Kiribati vs Guam, Kiribati vs Channel Islands, Kiribati vs Curaçao, Kiribati vs Seychelles, Kiribati vs Grenada, Kiribati vs Micronesia.
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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.