District of Columbia is about 526 times smaller than Hungary.

Hungary is approximately 93,028 sq km, while District of Columbia is approximately 177 sq km, making District of Columbia 0.19% the size of Hungary. Meanwhile, the population of Hungary is ~9.7 million people (9.1 million fewer people live in District of Columbia).
Tip: This to-scale comparison of Hungary vs. District of Columbia uses the Mercator projection, which distorts the size of regions near the poles.
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