18 Years’ Worth of Days The average retirement lasts for 18 years, with many lasting even longer. Will you fill your post-retirement days with purpose? Share | Related Content Social Security: By the Numbers Here are five facts about Social Security that might surprise you. The Pre-Retirement Checklist This checklist can give you a quick snapshot of how prepared you are. An Inside Look at Retirement Living A number of questions and concerns need to be addressed to help you better prepare for retirement living.