Croatia is about 26 times smaller than Alaska.

Alaska is approximately 1,481,348 sq km, while Croatia is approximately 56,594 sq km, making Croatia 3.82% the size of Alaska. Meanwhile, the population of Alaska is ~710,231 people (3.5 million more people live in Croatia).
Tip: This to-scale comparison of Alaska vs. Croatia uses the Mercator projection, which distorts the size of regions near the poles.