Urban planners suggest that it takes a population of about to obtain the advantages of a city but still retain the sense of community.

Urban planners recommend that it precedes a population of about 30,000 to 50,000 to get the advantages of a city but still maintain the sense of community. In addition, less than half of urban residents in evolving countries have acceptable sanitation services. The smart growth is a term that is applied to develop strategies that make effectual use of resources.