There's 8 that are inhabited and the rest of them are still unknown. There is however, 9 if you count political divisions as continents.
The first eight are: Europe, Asia, North America, South America, Africa, Antarctica, Australia and Oceania. Politically divided states (for example India) may be considered to have a single continent across two continents or more but it has not yet been decided whether this will be counted as one or two continents.
There Are Seven Continents In theWorld Following With There Population.
1 Asia population 4.5 billion
2 Africa population 1.2 billion
3 North America population 579 million
4 South America population 422.5 million
5 Antarctica population 4,490
6 Europe population 746.4 million
7 Australia population 25.36 million