Stages of Town Development

 1) Classification by Sir Patrick Geddes

Stages	Properties
Primary	Town, which produces human necessities such as agricultural village
Secondary	Town, which functions as entry of exchange such as marketing town
Tertiary	Town, which provides residential, educational and recreational facilities

 2) Classification by Lewis Mumford

Stages	Properties
Eopolis	The Eopolis indicates the first stage of town as a village community whose economic base is agriculture.
Polis	The Polis indicates and association of population with some mechanization and specialization.
Metropolis	The metropolis is a city or town which serves as a capital of a state or region.
Megalopolis	The megalopolis indicates the first stage of decline in town or city due to mega problems and issues, or the reign of town or city shows the signs of decline and deterioration.
Tyranopolis	Tyranopolis is the town or city which shows drastic deteriorating situation for example the trade depression or military powers may occur with different war lords.
Necropolis	Necropolis is the worst stage of town or city. For example the citizens are shifting to rural areas or village due to war, disease or economic break down. In that case the town may recover from it after a large internal of time.

3) Classification by Griffith Taylor

Stages	Properties
Infantile	This is the first stage of town in which a city is not yet divided in separate zones or the city in which zoning regulations is not being prepared yet.
Juvenile	The juvenile stage of town or city indicates that, shops are being separated from the houses or residential area and there are some factories or an industry has been established at a minimal level.
Mature	The mature stage of town shows the divisions of residential zone, commercial zone and industrial zone in the city or the land use and zoning regulations in town shows the stage of mature city / town.
Senile	Finally the senile stage of town indicates the physical decay in most of the portions of the city or the physical, social & economic degradation is evident in the built environment of town or city.

 4) Classification by Harold MacLean Lewis

Type	Population
Eopolis or Infantile Municipality Town	2500 to 5000
Polis or Juvenile Town	5000 to 10000
Mature Trade/Industrial Town	10000 to 25000
Metropolis or Medium Size City	25000 to 50000
Megalopolis Intermediate City	50000 to 100000
Trade/Industry/Service Sector City	100000 to 250000
Primate City	250000 to 500000
Tyranopolis or a Metropolitan City	500000 to 1000000
Senile City or Mega City	1000000 or more

5) Urban & Rural Classification of Towns & Cities (By Census of India)

Class	Class of Range of Population
Class I	100,000 and above
Class II	50,000 to 99,999
Class II	20,000 to 49,999
Class IV	10,000 to 19,999
Class V	5,000 to 9,999
Class VI	Below 5,000