District of Columbia is about 277 times smaller than Slovakia.

Slovakia is approximately 49,035 sq km, while District of Columbia is approximately 177 sq km, making District of Columbia 0.36% the size of Slovakia. Meanwhile, the population of Slovakia is ~5.4 million people (4.8 million fewer people live in District of Columbia).
Tip: This to-scale comparison of Slovakia vs. District of Columbia uses the Mercator projection, which distorts the size of regions near the poles.
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