Alaska is about 12,770 times bigger than Jersey.

Jersey is approximately 116 sq km, while Alaska is approximately 1,481,348 sq km, making Alaska 1,276,924% larger than Jersey. Meanwhile, the population of Jersey is ~102,146 people (608,085 more people live in Alaska).
Tip: This to-scale comparison of Jersey vs. Alaska uses the Mercator projection, which distorts the size of regions near the poles.