Only a small fraction of the Vietnamese adheres to institutional religions, according to the 2009 official census.[9]
Non religious, 80.8%
Buddhism, 9.3%
Christianity, 7.2%
Roman Catholic, 6.7%
Protestant, 0.5%
Hòa Hảo, 1.5%
Cao Đài, 1.1%
Estimates for the year 2010 published by the Pew Research Center:[10]
Vietnamese folk religions, 45.3%
Buddhism, 16.4%
Christianity, 8.2%
Non religious, 29.6%