What city is the dead center of the United States?

Could you elaborate on the concept of the "dead center" of the United States? Are we referring to a geographical center, a population hub, or perhaps a financial or economic epicenter? If we're discussing a geographical center, is there a specific methodology used to determine it, such as averaging the locations of all major cities or using a more complex algorithm? And if we do identify such a center, what city does it correspond to? The question begs for clarification in order to provide an accurate and informative answer.