New Zealand is about 1,519 times bigger than District of Columbia.

District of Columbia is approximately 177 sq km, while New Zealand is approximately 268,838 sq km, making New Zealand 151,786% larger than District of Columbia. Meanwhile, the population of District of Columbia is ~601,723 people (4.5 million more people live in New Zealand).
Tip: This to-scale comparison of District of Columbia vs. New Zealand uses the Mercator projection, which distorts the size of regions near the poles.