Guam vs Saint Lucia
Saint Lucia has 7% more people than Guam: 180,149 vs 168,999, a gap of 11,150. Guam is growing faster (+0.73% vs +0.23% a year), adding about 1,226 people a year against +405. Using continuous exponential growth from the stated base year, if these rates held, Guam would overtake Saint Lucia in about 13 years (from the 2025 population bases, around 2038) — a projection, not a forecast. Guam is the older society: 13.1% aged 65+ against 10.0% in Saint Lucia. People in Guam live 4.6 years longer on average (77.4 vs 72.8). GDP per capita is 2.8× higher in Guam ($41,833 vs $14,746).
Country/territory population bases: World Bank 2025 (Guam) and 2025 (Saint Lucia); growth years 2025 / 2025. Annual source values, not live counts; years may differ. Growth is national, not local.
Guam vs Saint Lucia — side by side
 Guam |  Saint Lucia | |
|---|---|---|
| Population | 168,9992025 | 180,1492025 |
| Growth rate / yr | +0.73%2025 | +0.23%2025 |
| Births per 1,000 | 17.32024 | 11.22024 |
| Deaths per 1,000 | 6.92024 | 8.72024 |
| Children per woman | 2.752024 | 1.392024 |
| Life expectancy | 77.4 yrs2024 | 72.8 yrs2024 |
| Aged 0–14 | 25.9%2025 | 17.2%2025 |
| Aged 65+ | 13.1%2025 | 10.0%2025 |
| Density | 308.3 /km²2023 | 293.9 /km²2023 |
| Area | 540 km²2023 | 620 km²2023 |
| Urban population | 94.2%2025 | 29.1%2025 |
| Net migration / yr | -4932025 | -232025 |
| GDP per capita | $41,8332022 | $14,7462025 |
| Country population rank (available records) | #184 | #183 |
| 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; Saint Lucia: 1.9× from 1960 to 2025. Left: absolute population. Right: each series indexed to its own first available year = 100; baseline years may differ.
More comparisons
Regions: East Asia & Pacific · Latin America & Caribbean · 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.
Saint Lucia: Saint Lucia vs French Polynesia, Saint Lucia vs São Tomé and Príncipe, Saint Lucia vs Samoa, Saint Lucia vs Guam, Saint Lucia vs Channel Islands, Saint Lucia vs Curaçao.
Compare anything
Pick any two. The result renders instantly from the same live data as the map, and the URL updates so you can share it.
What changed during your lifetime?
Turn these figures into a private, five-scene personal world story.
Compare like with like
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.