Delaware is about 53 times smaller than New Zealand.

New Zealand is approximately 268,838 sq km, while Delaware is approximately 5,060 sq km, making Delaware 1.88% the size of New Zealand. Meanwhile, the population of New Zealand is ~5.1 million people (4.2 million fewer people live in Delaware).
Tip: This to-scale comparison of New Zealand vs. Delaware uses the Mercator projection, which distorts the size of regions near the poles.