Incredibly Detailed Map of the World's Religions - Brilliant Maps

Incredibly Detailed Map of the World's Religions - Brilliant Maps

Colored by plurality religion in each census subdivision. In the USA, the county is used (census tract would have been even more interesting). In some countries, smaller geographical units are used. The article notes the existence of religion by default in Scandinavian nations. I suspect the difference in religiosity between Czechia and Slovakia, between Estonia and its Baltic neighbors, and between Vietnam and its neighbors is mainly a difference in the way those governments count religious adherents. Likewise, I don't think Australia is really that much more religious than New Zealand. I'd be interested to know how