Jersey is about 1.5 times bigger than Guernsey.

Guernsey is approximately 78 sq km, while Jersey is approximately 116 sq km, making Jersey 49% larger than Guernsey. Meanwhile, the population of Guernsey is ~67,491 people (34,655 more people live in Jersey).
This to-scale comparison of Guernsey vs. Jersey uses the Mercator projection, which distorts the size of regions near the poles. Learn more.

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