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Developed environments (human settlements) are environments in geography. Different kinds of developed lands are developed environments. The main developed environments are Urban, Suburban, Rural and (not as much) Exurban communities.
Urban: An urban area is an area with an increased density of human-created structures in comparison to the areas surrounding it. Urban areas are extremely dense population areas. An urban area is more frequently called a city or metropolitan area.
Suburban: A residential area on the outskirts of a city. Suburban areas have lower population density than inner city neighborhoods. Suburban areas are dense to semi-dense population areas. A suburban area is frequently a large community.
Exurban, Commuter Towns: A commuter town is an urban community that is primarily residential, from which most of the workforce commute out of the community to earn their livelihood. Most commuter towns are suburbs of a nearby metropolis that workers travel to daily, and many suburbs are commuter towns, but not always. There are exurban communities too. The expression "exurb" (for "extra-urban") was coined in the 1950s, to describe the ring of prosperous rural communities beyond older suburbs, that are commuter towns for an urban area. Most exurbs serve as commuter towns, but some commuter towns are not exurban. These communities can be dense, semi-dense and sparsely populated areas. These communities are mostly towns.Example:Tarlac City, Philippines
Rural: Rural areas are settled places outside towns and cities. Such areas are distinct from more intensively settled urban and suburban areas. These areas are mostly sparsely populated areas. Inhabitants live in villages, hamlets, on farms and in other isolated dwellings.
The main types of communities in rural areas can be: a village (pop. 200-800 people) or a hamlet (pop. fewer than 200 people.) or an isolated dwelling (which is just 1 or 2 buildings with families in it.)
Populations in Rural communities/areas are usually under 10,000 people.