Tokelau is about 15 times smaller than District of Columbia.

District of Columbia is approximately 177 sq km, while Tokelau is approximately 12 sq km, making Tokelau 6.78% the size of District of Columbia. Meanwhile, the population of District of Columbia is ~601,723 people (600,076 fewer people live in Tokelau).
Tip: This to-scale comparison of District of Columbia vs. Tokelau uses the Mercator projection, which distorts the size of regions near the poles.