Ohio is about 20 times smaller than Saudi Arabia.

Saudi Arabia is approximately 2,149,690 sq km, while Ohio is approximately 106,056 sq km, making Ohio 4.93% the size of Saudi Arabia. Meanwhile, the population of Saudi Arabia is ~35.4 million people (23.8 million fewer people live in Ohio).
Tip: This to-scale comparison of Saudi Arabia vs. Ohio uses the Mercator projection, which distorts the size of regions near the poles.