Swaziland is about 7 times smaller than Pennsylvania.

Pennsylvania is approximately 116,075 sq km, while Swaziland is approximately 17,364 sq km, making Swaziland 14.96% the size of Pennsylvania. Meanwhile, the population of Pennsylvania is ~12.7 million people (11.6 million fewer people live in Swaziland).
Tip: This to-scale comparison of Pennsylvania vs. Swaziland uses the Mercator projection, which distorts the size of regions near the poles.