Kansas is about 1,197 times bigger than District of Columbia.

District of Columbia is approximately 177 sq km, while Kansas is approximately 211,900 sq km, making Kansas 119,618% larger than District of Columbia. Meanwhile, the population of District of Columbia is ~601,723 people (2.3 million more people live in Kansas).
Tip: This to-scale comparison of District of Columbia vs. Kansas uses the Mercator projection, which distorts the size of regions near the poles.