5 Most Religious Cities in the World

3. Niamey, Niger

Affiliation with religion: 99%

Weekly worship attendance: 88%

Percentage of people who pray daily: 87%

Perception of religion as very important: 86%

Insider Monkey Score: 90

Niamey has an Insider Monkey Score of 90, giving it the third spot on our list of the most religious cities in the world. It is the largest city in Niger, where 98% of the population is Muslim.