Northern Ireland is about 2.5 times bigger than Prince Edward Island.

Prince Edward Island is approximately 5,620 km² (2,170 sq mi), while Northern Ireland is approximately 14,130 km² (5,456 sq mi), making Northern Ireland 151% larger than Prince Edward Island.
Tip: This to-scale comparison of Prince Edward Island vs. Northern Ireland uses the Mercator projection, which distorts the size of regions near the poles.
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