District of Columbia is about 256 times smaller than Estonia.

Estonia is approximately 45,228 sq km, while District of Columbia is approximately 177 sq km, making District of Columbia 0.39% the size of Estonia. Meanwhile, the population of Estonia is ~1.2 million people (609,801 fewer people live in District of Columbia).
Tip: This to-scale comparison of Estonia vs. District of Columbia uses the Mercator projection, which distorts the size of regions near the poles.
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