Based on administrative limits, migration is classified as internal and external migration.
Internal migration is the movement of people within a country. It can further be of four types -
Rural to Urban migration - When people move from rural areas to towns and cities in search of better education, employment, lifestyle etc. It is the most common form of internal migration
Urban to Urban migration - When people migrate from one urban area to another for better income, transfers, education etc.
Rural to Rural migration- When people migrate from one rural area to another in search of fertile land for cultivation or migration of women after marriage etc.
Urban to Rural migration - People move away from urban areas to rural regions because of problems of rapid urbanisation like pollution, traffic, bad housing etc. This mainly is seen after the retirement of people.