Montenegro is about 157 times smaller than Greenland.

Greenland is approximately 2,166,086 sq km, while Montenegro is approximately 13,812 sq km, making Montenegro 0.64% the size of Greenland. Meanwhile, the population of Greenland is ~56,831 people (566,298 more people live in Montenegro).
Tip: This to-scale comparison of Greenland vs. Montenegro uses the Mercator projection, which distorts the size of regions near the poles.
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