Country size comparison
compared to
Mongolia is about 22 times bigger than Sierra Leone.
Sierra Leone is approximately 71,740 sq km, while Mongolia is approximately 1,564,116 sq km, making Mongolia 2,080% larger than Sierra Leone. Meanwhile, the population of Sierra Leone is ~8.7 million people (5.5 million fewer people live in Mongolia).
Tip:
This to-scale comparison of
Sierra Leone
vs.
Mongolia
uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: Mongolia vs. Sierra Leone
Flip Comparison · See true size
See Mongolia on top of Sierra Leone
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Quality of Life Comparison · 16 statistics
Be 2.0 times more likely to live below the poverty line in Sierra Leone
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Cost of Living Comparison · 6 categories - 2026 data
Sierra Leone is 49.5% more expensive than Mongolia overall
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