Wyoming is about 350 times bigger than Singapore.

Singapore is approximately 719 sq km, while Wyoming is approximately 251,489 sq km, making Wyoming 34,868% larger than Singapore. Meanwhile, the population of Singapore is ~5.9 million people (5.4 million fewer people live in Wyoming).
Tip: This to-scale comparison of Singapore vs. Wyoming uses the Mercator projection, which distorts the size of regions near the poles.