Nebraska is about 277 times bigger than Singapore.

Singapore is approximately 719 sq km, while Nebraska is approximately 199,099 sq km, making Nebraska 27,583% larger than Singapore. Meanwhile, the population of Singapore is ~5.9 million people (4.1 million fewer people live in Nebraska).
Tip: This to-scale comparison of Singapore vs. Nebraska uses the Mercator projection, which distorts the size of regions near the poles.