State size comparison
compared to
Idaho is about 1.2 times bigger than Washington.
Washington is approximately 172,348 sq km, while Idaho is approximately 214,314 sq km, making Idaho 24% larger than Washington. Meanwhile, the population of Washington is ~6.7 million people (5.2 million fewer people live in Idaho).
Tip:
This to-scale comparison of
Washington
vs.
Idaho
uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: Idaho vs. Washington
Flip Comparison · See true size
See Idaho on top of Washington
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Quality of Life Comparison · 17 statistics
Make 78.9% more money in Washington
→
Cost of Living Comparison · 7 categories - 2026 data
Washington is 18.3% more expensive than Idaho
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Moving from Idaho to Washington · Cost, visas & climate
Compare cost of living, salary and climate.
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