A study by the Pew Research Center (See LiveScience link) found women to be more religious than men. The sample size was a some 35 000 adults interviewed by the Pew Forum on Religion & Public Life. The study found that 86% of women are affiliated with a religion compared to 79% of men, 77% of women have an absolutely certain belief in a god or universal spirit, and at least 66% pray daily as opposed to 49% of men. Also, 58% of women hold belief in a personal God while 45% of men likewise believe. The late commentator George Gallup Jr., who focused on the religious and spiritual climate in America, explained that “A mountain of Gallup survey data attests to the idea that women are more religious than men, hold their beliefs more firmly, practice their faith more consistently, and work more vigorously for the congregation.”
Researchers suggest that this may be a result of several variables, for instance women generally have more free time and flexible daily schedules than men, being more open than men about sharing personal beliefs such as their faith, and likewise being more relational.