Anguilla is about 1.9 times smaller than District of Columbia.

District of Columbia is approximately 177 sq km, while Anguilla is approximately 91 sq km, making Anguilla 51.41% the size of District of Columbia. Meanwhile, the population of District of Columbia is ~601,723 people (582,982 fewer people live in Anguilla).
Tip: This to-scale comparison of District of Columbia vs. Anguilla uses the Mercator projection, which distorts the size of regions near the poles.