Percent decrease in your risk of getting a divorce:

30: If your annual income is over $50,000 (vs. under $25,000)

24: If you wait seven months or more after marriage to have children (vs. before marriage)

24: If you marry when you’re older than 25 years of age (vs. under 18)

14: If your mother and father were not divorced

14: If you have some religious affiliation

13: If you have some college (vs. high-school dropout)

Source: http://www.divorcereform.org/real.html