A Gallup poll surveying over 140 countries and all major religions found that people who consider themselves "highly religious" are more likely to donate to charity, volunteer, and help strangers in need.
Though donating to charity was more common than volunteering, highly religious people still reported doing more of both than less religious people. The gap is smaller between highly religious and less religious when it comes to helping strangers.
The survey can't conclude whether religiosity makes one more likely to help others, or if generous people are more attracted to religion. Most faiths have traditions of helping others, such as charity among Christians, Muslims and Buddhists.