Wisconsin is about 795 times bigger than District of Columbia.

District of Columbia is approximately 177 sq km, while Wisconsin is approximately 140,663 sq km, making Wisconsin 79,371% larger than District of Columbia. Meanwhile, the population of District of Columbia is ~601,723 people (5.1 million more people live in Wisconsin).
Tip: This to-scale comparison of District of Columbia vs. Wisconsin uses the Mercator projection, which distorts the size of regions near the poles.