Economic Growth refers to an increase in real aggregate output (real GDP) reflected in increased real per capita income. A country is said to experience economic growth if overtime, its real output (real GDP) increases as well as its real per capita income.Economic planning involves the conscious allocation of resources by the government to the various sectors of the economy to promote rapid economic growth. This is done through development plans. There are three dimensions to development planning namely: resources accumulation resource allocation and resource management.A population census is the head count of people living in a geographical area or in a country. A population census collects comprehensive data on people to know e.g. sex, age, educational and occupational backgrounds, religious affiliation, nationality, etc.