Czech Republic is about 1.5 times smaller than Pennsylvania.

Pennsylvania is approximately 116,075 sq km, while Czech Republic is approximately 78,867 sq km, making Czech Republic 67.94% the size of Pennsylvania. Meanwhile, the population of Pennsylvania is ~12.7 million people (2.0 million fewer people live in Czech Republic).
This to-scale comparison of Pennsylvania vs. Czech Republic uses the Mercator projection, which distorts the size of regions near the poles. Learn more.

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