Jersey is about 1.3 times bigger than Fort Lauderdale.

Fort Lauderdale (excluding the city's 9.9 sq km of water area) is approximately 90 sq km, while Jersey is approximately 116 sq km, making Jersey 29% larger than Fort Lauderdale.
Tip: This to-scale comparison of Fort Lauderdale vs. Jersey uses the Mercator projection, which distorts the size of regions near the poles.