State size comparison
compared to
Washington is about 1.2 times smaller than Idaho.
Idaho is approximately 214,314 sq km, while Washington is approximately 172,348 sq km, making Washington 80.42% the size of Idaho. Meanwhile, the population of Idaho is ~1.6 million people (5.2 million more people live in Washington).
Tip:
This to-scale comparison of
Idaho
vs.
Washington
uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: Washington vs. Idaho
Flip Comparison · See true size
See Washington on top of Idaho
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Quality of Life Comparison · 17 statistics
Make 44.1% less money in Idaho
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Cost of Living Comparison · 7 categories - 2026 data
Idaho is 13.9% cheaper than Washington
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Moving from Washington to Idaho · Cost, visas & climate
Compare cost of living, salary and climate.
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