Jersey is about 12,770 times smaller than Alaska.

Alaska is approximately 1,481,348 sq km, while Jersey is approximately 116 sq km, making Jersey 0.01% the size of Alaska. Meanwhile, the population of Alaska is ~710,231 people (608,085 fewer people live in Jersey).
Tip: This to-scale comparison of Alaska vs. Jersey uses the Mercator projection, which distorts the size of regions near the poles.