Chester is the center of an urban cluster with a total population of 11,140 (2000 census).

People were attracted to place their factories and homes in the urban clusters near these 'power points'.

Urban areas under 50,000 people are called urban clusters.

There are 1,371 urban areas and urban clusters with more than 10,000 people.

The population was 5,524 at the 2000 census and center of an urban cluster with a total population of 9,069.

The population was 2,861 at the 2010 census, and (as of 2000) the center of a slightly larger urban cluster of 4,204.

Abbeville is the center of a small urban cluster with a total population of 6,038 (2000 census).

The population was 13,905 at the 2010 census and center of an urban cluster with a total population of 42,199.

Each micropolitan statistical area must have at least one urban cluster of at least 10,000 but less than 50,000 population.

According to the 2000 census, the urban cluster had a population of 8,466 people.