Saint Lucia is about 1.5 times bigger than Heard Island and McDonald Islands.

Heard Island and McDonald Islands is approximately 412 sq km, while Saint Lucia is approximately 616 sq km, making Saint Lucia 50% larger than Heard Island and McDonald Islands.
Tip: This to-scale comparison of Heard Island and McDonald Islands vs. Saint Lucia uses the Mercator projection, which distorts the size of regions near the poles.

Compare further: Saint Lucia vs. Heard Island and McDonald Islands

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