Cuba is around the same size as North Carolina.

North Carolina is approximately 126,161 sq km, while Cuba is approximately 110,860 sq km, making Cuba 87.87% the size of North Carolina. Meanwhile, the population of North Carolina is ~9.5 million people (1.5 million more people live in Cuba).
Tip: This to-scale comparison of North Carolina vs. Cuba uses the Mercator projection, which distorts the size of regions near the poles.