State size comparison
Washington is about 1.6 times smaller than Colorado.
Colorado is approximately 268,627 sq km, while Washington is approximately 172,348 sq km, making Washington 64.16% the size of Colorado. Meanwhile, the population of Colorado is ~5.0 million people (1.7 million more people live in Washington).
This to-scale comparison of Colorado vs. Washington uses the Mercator projection, which distorts the size of regions near the poles. Learn more. Note: Try dragging the outline to reposition.