Senegal is around the same size as Nebraska.

Nebraska is approximately 199,099 sq km, while Senegal is approximately 196,722 sq km, making Senegal 98.81% the size of Nebraska. Meanwhile, the population of Nebraska is ~1.8 million people (16.1 million more people live in Senegal).
Tip: This to-scale comparison of Nebraska vs. Senegal uses the Mercator projection, which distorts the size of regions near the poles.