District of Columbia is about 520 times smaller than Portugal.

Portugal is approximately 92,090 sq km, while District of Columbia is approximately 177 sq km, making District of Columbia 0.19% the size of Portugal. Meanwhile, the population of Portugal is ~10.2 million people (9.6 million fewer people live in District of Columbia).
Tip: This to-scale comparison of Portugal vs. District of Columbia uses the Mercator projection, which distorts the size of regions near the poles.
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