District of Columbia is about 243 times smaller than Denmark.

Denmark is approximately 43,094 sq km, while District of Columbia is approximately 177 sq km, making District of Columbia 0.41% the size of Denmark. Meanwhile, the population of Denmark is ~5.9 million people (5.3 million fewer people live in District of Columbia).
Tip: This to-scale comparison of Denmark vs. District of Columbia uses the Mercator projection, which distorts the size of regions near the poles.
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