Massachusetts is about 175 times bigger than Jersey.

Jersey is approximately 116 sq km, while Massachusetts is approximately 20,306 sq km, making Massachusetts 17,405% larger than Jersey. Meanwhile, the population of Jersey is ~102,146 people (6.4 million more people live in Massachusetts).
Tip: This to-scale comparison of Jersey vs. Massachusetts uses the Mercator projection, which distorts the size of regions near the poles.