Senegal is about 6 times smaller than Niger.

Niger is approximately 1,267,000 sq km, while Senegal is approximately 196,722 sq km, making Senegal 15.53% the size of Niger. Meanwhile, the population of Niger is ~24.5 million people (6.6 million fewer people live in Senegal).
This to-scale comparison of Niger vs. Senegal uses the Mercator projection, which distorts the size of regions near the poles. Learn more.

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