Three Differences between Total Population and Average Density of Population are as follows:
1. Total population of a country is the grand total of the persons living in a country at some point of time.
2. It is expressed in absolute numbers.
3. It does not cover negative areas.
4. Total population of India as per 2001 census was 102.8 crore.
Average Density of Population
1. Average density of population is the number of persons living per unit of area at a point of time.
2. It is expressed as number of persons per unit of area.
3. It tends to cover even the negative areas such as rivers, lakes, ponds, swamps etc.
4. Average density of population in India was 324 persons per sq. km in 2001.