District of Columbia is about 5,352 times smaller than Tanzania.

Tanzania is approximately 947,300 sq km, while District of Columbia is approximately 177 sq km, making District of Columbia 0.02% the size of Tanzania. Meanwhile, the population of Tanzania is ~63.9 million people (63.3 million fewer people live in District of Columbia).
Tip: This to-scale comparison of Tanzania vs. District of Columbia uses the Mercator projection, which distorts the size of regions near the poles.
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