Turkey is about 3.7 times bigger than Idaho.

Idaho is approximately 214,314 sq km, while Turkey is approximately 783,562 sq km, making Turkey 266% larger than Idaho. Meanwhile, the population of Idaho is ~1.6 million people (81.5 million more people live in Turkey).
Tip: This to-scale comparison of Idaho vs. Turkey uses the Mercator projection, which distorts the size of regions near the poles.