denser places with bigger cities are, to put it simply, richer.
Manhattan is denser than an English muffin, but America is filled with emptiness.
The emergence of the Fourth Place marks a return to a denser, more stimulating way of life.
early 15c., from Middle French dense and directly from Latin densus "thick, crowded; cloudy," perhaps from PIE root *dens- "dense, thick" (cf. Greek dasus "hairy, shaggy"). Sense of "stupid" is first recorded 1822.