Brazil is the largest Catholic country in the world, with an estimated Catholic population of 140 million, ahead of Mexico and the Philippines, with 101 million and 85 million Catholics, respectively. Nevertheless, Brazil's Catholic population is shrinking. By 2050, today's largest Catholic country could have a majority Protestant population.

The average for 2013 based on 84 countries was 43.2 percent. The highest value was in Poland: 95.2 percent and the lowest value was in Ethiopia: 0.6 percent. The indicator is available from 1960 to 2013. Below is a chart for all countries where data are available.

The average for 2013 based on 20 countries was 74.7 percent. The highest value was in Colombia: 94.1 percent and the lowest value was in Haiti: 44 percent. The indicator is available from 1960 to 2013. Below is a chart for all countries where data are available.

Based on the 2020 census, Region 5 or the Bicol Region registered the highest share of households who reported Roman Catholic as their religious affiliation at 93.5 percent. This was followed by Region 8 or Eastern Visayas with a share of 92.3 percent. In contrast, only five percent of households in BARMM were Roman Catholics. The Philippines is one of the countries in the world with the highest population professing the Catholic faith, after Brazil and Mexico.

In 2021, around ***** percent of the population in East Nusa Tenggara, Indonesia were Catholics. Indonesia has the largest Islamic population in the world and therefore the largest Muslim nation. However, Indonesia is not a Muslim nation by constitution. The archipelago has *** official religions – Islam, Protestantism, Catholicism, Buddhism, Hinduism, and Confucianism.

Based on the 2020 census, the majority of Filipino households were affiliated with the Roman Catholic religion, numbering about 86 million people. Meanwhile, there were roughly seven million Muslims in the country. The Philippines is one of the countries in the world with the highest population professing the Catholic faith, after Brazil and Mexico.

As of 2015, around ** million female and male population among households in the Philippines were affiliated with the Roman Catholic Church. The Philippines is one of the countries in the world with the highest population professing the Catholic faith, after Brazil and Mexico.

In 2023, over ** percent of Indonesians declared themselves to be Muslim, followed by *** percent who were Christians. Indonesia has the largest Islamic population in the world and for this reason is often recognized as a Muslim nation. However, Indonesia is not a Muslim nation according to its constitution. The archipelago is a multifaith country and officially recognizes six religions – Islam, Protestantism, Catholicism, Buddhism, Hinduism, and Confucianism. Not all provinces in Indonesia are Muslim majority The spread of Islam in Indonesia began on the west side of the archipelago, where the main maritime trade routes were located. Until today, most of the Indonesian Muslim population are residing in Western and Central Indonesia, while the majority religion of several provinces in Eastern Indonesia, such as East Nusa Tenggara and Bali, is Christian and Hindu, respectively. Discrimination towards other beliefs in Indonesia The Indonesian constitution provides for freedom of religion. However, the Government Restrictions Index Score on religion in Indonesia is relatively high. Indonesians who practice unrecognized religions, including Indonesia’s indigenous or traditional belief systems, such as animism, dynamism, and totemism, face legal restrictions and discrimination. Indonesian law requires its citizens to put one of the recognized religions on their national identity cards, with some exceptions for indigenous religions. Although legally citizens may leave the section blank, atheism or agnosticism is considered uncommon in Indonesia.