The total population of the province of Bali according to the 2005 census is 3,431,368 people. Five previous census recorded a population in Bali as follows : in the 1930 census recorded 1,101,029 people, in 1961 census recorded 1,782,529 people, in 1971 census recorded 2,120,091 people, the census in 1980 recorded 2,469,930 people, the census in 2000 recorded 3,146,999 people.

And in 2010 a population become 3.89 million million. With most Hindus are 93.18%, while the rest are Muslims, Christians, and Buddhists.

Bali's population in 2014 approximately 4 million more, with a majority of 84.5% of Hinduism. Other religions are Buddhism (0.5%), Islam (13.3%), Protestants and Catholics (1.7%). Islam is the largest minority religion in Bali with adherents has now reached 13.3% based on the latest census in January 2014.

Apart from tourism, the Balinese are also living from agriculture and fisheries, most notably the world of agriculture in Bali is Subak system. Some also choose to be an artist.

The language used by the people of Bali is Indonesian, Balinese language and English (especially for those who work in the tourism sector). Bahasa Bali and Bahasa Indonesia are the most people used the language in Bali and Indonesia as well as other residents using the regional language as a mother tongue. Although there are several dialects of the Balinese language, generally Balinese language dialect association as an option in communicating. In Bali has its own Bali language usage levels, for example Bahasa Bali Alus, Bahasa Bali Madya, and Bahasa Bali Kasar. 

Bahasa Bali Alus is a language that used to speak formally for example in the traditional village level meetings, to woo a woman, or between a low-caste people to a higher caste. 

Bahasa Bali Madya is a language that used at the community level medium such as officials to chief. 

Bahasa Bali Kasar is a Language that used by lower-class people such nobles to servants.

English is the third language (become the primary foreign language) of many Balinese people, are influenced by the needs of the tourism industry. The employees who work at the tourist information centers in Bali, often also understand some of the foreign language with adequate competence. Japanese language education is also a priority in Bali beside other languages.