Kenya is about 2.7 times bigger than Idaho.

Idaho is approximately 214,314 sq km, while Kenya is approximately 580,367 sq km, making Kenya 171% larger than Idaho. Meanwhile, the population of Idaho is ~1.6 million people (54.3 million more people live in Kenya).
Tip: This to-scale comparison of Idaho vs. Kenya uses the Mercator projection, which distorts the size of regions near the poles.