Which country has the highest Catholic Mass attendance? We can’t say for sure because surveys have not been conducted on the topic in every country in the world. The World Values Survey (WVS) is in its seventh wave (beginning in the 1980s) and has data for 36 countries with large Catholic populations. Among these, weekly or more frequent Mass attendance is highest among adult self-identified Catholics in Nigeria (94%), Kenya (73%), and Lebanon (69%). The next segment of countries, where hal...
