Two senators, each of which represent about 550,000 people, compared to (on the other end of the scale) California's two senators, who each represent about 20,000,000 people. That's a 36x imbalance, which is pretty disproportionate.
Every person from a state with lower population than the median is overrepresented in the Senate, every state with higher than median is underrepresented.
It is a good thing that the Senate represents the States then, and not the people. There wouldn't be much point in having two houses of legislature if they both represented the same entities.
Every person from a state with lower population than the median is overrepresented in the Senate, every state with higher than median is underrepresented.