Wikipedia
Urban culture is the culture of towns and cities. The defining theme is the presence of a great number of very different people in a very limited space - most of them are strangers to each other. This makes it possible to build up a vast array of subcultures close to each other, exposed to each other's influence, but without necessarily intruding into people's private lives.
Usage examples of "urban culture".
That prejudice is compounded of equal parts hatred, political separatism, open contempt for federal laws, disdain of urban culture, and a creed of guerilla-style violence that has produced thousands of terrorists whose sole aim is to destroy the legitimate government of this planet.
Living in a deep, dark environment where the sun never shined had created a round-the-clock urban culture.
In those sober, God-fearing communities, far from the luxuries of urban culture, secular amusements were lacking, and a mature married lady had neither the time nor the inclination to join in the games proper to children.