Idaho is about 2.7 times smaller than Kenya.

Kenya is approximately 580,367 sq km, while Idaho is approximately 214,314 sq km, making Idaho 36.93% the size of Kenya. Meanwhile, the population of Kenya is ~55.9 million people (54.3 million fewer people live in Idaho).
Tip: This to-scale comparison of Kenya vs. Idaho uses the Mercator projection, which distorts the size of regions near the poles.