State size comparison
Pennsylvania is about 3.5 times smaller than California.
California is approximately 403,882 sq km, while Pennsylvania is approximately 116,075 sq km, making Pennsylvania 28.74% the size of California. Meanwhile, the population of California is ~37.3 million people (24.6 million fewer people live in Pennsylvania).
This to-scale comparison of California vs. Pennsylvania uses the Mercator projection, which distorts the size of regions near the poles. Learn more. Note: Try dragging the outline to reposition.