District of Columbia is about 1,023 times smaller than Cambodia.

Cambodia is approximately 181,035 sq km, while District of Columbia is approximately 177 sq km, making District of Columbia 0.1% the size of Cambodia. Meanwhile, the population of Cambodia is ~16.7 million people (16.1 million fewer people live in District of Columbia).
Tip: This to-scale comparison of Cambodia vs. District of Columbia uses the Mercator projection, which distorts the size of regions near the poles.
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