District of Columbia is about 7,158 times smaller than Niger.

Niger is approximately 1,267,000 sq km, while District of Columbia is approximately 177 sq km, making District of Columbia 0.01% the size of Niger. Meanwhile, the population of Niger is ~24.5 million people (23.9 million fewer people live in District of Columbia).
Tip: This to-scale comparison of Niger vs. District of Columbia uses the Mercator projection, which distorts the size of regions near the poles.
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