Alaska is about 2 times bigger than Zambia.

Zambia is approximately 752,618 sq km, while Alaska is approximately 1,481,348 sq km, making Alaska 97% larger than Zambia. Meanwhile, the population of Zambia is ~19.6 million people (18.9 million fewer people live in Alaska).
Tip: This to-scale comparison of Zambia vs. Alaska uses the Mercator projection, which distorts the size of regions near the poles.