District of Columbia is about 5,219 times smaller than Nigeria.

Nigeria is approximately 923,768 sq km, while District of Columbia is approximately 177 sq km, making District of Columbia 0.02% the size of Nigeria. Meanwhile, the population of Nigeria is ~225.1 million people (224.5 million fewer people live in District of Columbia).
Tip: This to-scale comparison of Nigeria vs. District of Columbia uses the Mercator projection, which distorts the size of regions near the poles.
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