District of Columbia is about 204 times smaller than Guinea-Bissau.

Guinea-Bissau is approximately 36,125 sq km, while District of Columbia is approximately 177 sq km, making District of Columbia 0.49% the size of Guinea-Bissau. Meanwhile, the population of Guinea-Bissau is ~2.0 million people (1.4 million fewer people live in District of Columbia).
Tip: This to-scale comparison of Guinea-Bissau vs. District of Columbia uses the Mercator projection, which distorts the size of regions near the poles.
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