How Long Do Marriages Last? Data, Factors, and Support
The median length of a marriage in the United States is about eight years, according to the U.S. Census Bureau's American Community Survey. That number reflects marriages that end in divorce. Marriages that last until one partner's death are considerably longer, with a median around 20 years.
But averages only tell part of the story. Marriage duration varies significantly by age, education, geography, and relationship patterns. This page breaks down what the data says, what factors influence how long marriages last, and how couples therapy can support relationships at any stage.
What is the average length of a marriage?
The most reliable measure of marriage duration is the median, not the mean, because a small number of very long or very short marriages can skew an average. The median duration of marriages that end in divorce in the U.S. is approximately eight years, based on the most recent American Community Survey data.
That said, the number has shifted over time. Data from the National Center for Family and Marriage Research at Bowling Green State University shows that the median duration of marriage has gradually increased over the past two decades, reflecting both later marriage ages and changing attitudes about when to leave a marriage.
A few numbers to put things in context:
- About 40%-50% of first marriages in the U.S. end in divorce, according to the American Psychological Association.
- The divorce rate has actually declined since the 1980s, particularly among younger, college-educated couples.
- Marriage duration varies by state, with some states showing median durations two to three years longer than others.
These figures describe populations, not individual relationships. No statistic predicts what will happen in your marriage.
Factors that influence how long marriages last
Several factors are consistently associated with marriage duration. None of them is destiny, but each shapes the odds.
Age at marriage. Couples who marry before age 25 have higher divorce rates than those who marry later. Research from the Institute for Family Studies suggests that the lowest divorce risk comes with marrying between ages 28 and 32, though this varies by community and context.
Education and income. Higher education levels and financial stability are associated with longer marriages. Economic stress is one of the most common sources of marital conflict, and couples with fewer financial resources face additional strain.
First versus subsequent marriages. Second marriages end in divorce at higher rates than first marriages, and third marriages at higher rates still. The reasons are complex and include the presence of stepchildren, financial entanglements, and patterns that carried over from previous relationships.
Communication patterns. Research from John Gottman's lab at the University of Washington identifies four communication behaviors that strongly predict marital breakdown: criticism, contempt, defensiveness, and stonewalling. Gottman calls these the "Four Horsemen." Couples who learn to recognize and interrupt these patterns tend to maintain their relationships longer.
Attachment and emotional connection. Couples who maintain a sense of emotional safety, where both partners feel they can be vulnerable, tend to weather conflict and transitions more successfully than couples where emotional distance has become the default.
When do most divorces happen?
Divorces are not evenly distributed across marriage years. They tend to cluster around certain milestones.
The highest-risk period is between years 5 and 8 of a marriage. This pattern has been documented across multiple studies, including analyses by the Gottman Institute and the U.S. Census Bureau. Researchers attribute it to the wearing off of initial idealization, the accumulation of unresolved conflicts, and the arrival of major stressors like young children or career demands.
A second period of elevated risk appears around years 10 through 15, often coinciding with children growing older and partners reassessing what they want from the relationship.
These are statistical patterns, not predictions. Plenty of marriages that hit a rough stretch at year 7 go on for decades, and marriages that seem stable at year 10 can unravel later. The patterns are useful mostly as a reminder that relationships evolve, and the skills that sustained a marriage early on may need updating.
Signs a marriage may need support
Certain patterns can signal that a marriage would benefit from outside support, even when divorce is not on the table.
- Persistent conflict without resolution. Every couple argues. When the same fights keep cycling without progress, the underlying issue is likely something neither partner can see clearly from inside the dynamic.
- Emotional distance or withdrawal. When one or both partners stop engaging, stop sharing, or stop caring about the other's inner life, that distance tends to grow.
- Loss of trust after a breach. Infidelity, financial dishonesty, or other betrayals create wounds that rarely heal on their own.
- Major life transitions. A new baby, a job loss, a move, retirement, or an illness can stress even strong marriages. These transitions are not signs of a bad marriage; they are moments when extra support can make a real difference.
- Feeling like roommates. When the relationship feels functional but emotionally flat, that is often a sign that the connection needs attention.
None of these mean a marriage is over. They mean something is asking to be addressed.
How couples therapy can help
Couples therapy helps partners identify the patterns driving their conflict, rebuild communication, and decide together what they want the relationship to look like going forward.
Evidence-based approaches include:
- Gottman Method, which focuses on building friendship, managing conflict, and creating shared meaning. Developed from decades of observational research on what makes marriages work.
- Emotionally focused therapy (EFT), which helps couples understand and reshape the emotional responses driving their interactions. EFT has strong research support, with studies showing that 70%-75% of couples move from distress to recovery.
- Cognitive behavioral couples therapy, which addresses the thoughts and behaviors each partner brings to the relationship.
Couples therapy is not just for crisis. Many couples use it proactively, working through transitions, strengthening communication, or reconnecting after a period of distance. Octave therapists work with couples across a range of relationship concerns. If you are ready to explore this, you can find a couples therapist who fits your needs.
Sources
- U.S. Census Bureau. American Community Survey: Median duration of current marriage.
- National Center for Family and Marriage Research, Bowling Green State University. Median duration of marriages, Family Profile FP-20-16.
- American Psychological Association. Marriage and divorce statistics.
- Gottman, J. M., & Silver, N. (1999). The Seven Principles for Making Marriage Work. Crown Publishers.
- Johnson, S. M. (2008). Hold Me Tight: Seven Conversations for a Lifetime of Love. Little, Brown Spark.
- Institute for Family Studies. Age at marriage and divorce risk.
