Married couples in the United States have sex about once a week on average, though nearly half report having sex less often than that. A 2019 study found that 47% of married couples have sex less than once a week, and General Social Survey data puts the overall average for married adults at roughly 51 times per year. If your number is higher or lower, you’re in good company either way.
What the Numbers Actually Look Like
The General Social Survey, one of the longest-running studies of American behavior, breaks down sexual frequency across all adults like this: 25% have sex about once a week, 19% two or three times a month, 17% once a month, 16% two or three times a week, and 5% four or more times a week. On the other end, 10% reported no sex at all in the past year, and another 7% had sex only once or twice.
These figures cover all adults, not just married ones. Married couples tend to have sex more frequently than single people on average, but the range within marriage is enormous. Some couples are happy at twice a month; others feel disconnected at anything less than three times a week. The number alone doesn’t tell you much about the health of the relationship.
How Frequency Changes With Age
Age is the single biggest predictor of how often married couples have sex. The General Social Survey provides a clear picture for married adults specifically:
- Ages 18 to 29: about 109 times per year (roughly twice a week)
- Ages 30 to 39: about 87 times per year (a little less than twice a week)
- Ages 40 to 49: about 70 times per year (a bit more than once a week)
- Ages 50 to 59: about 53 times per year (about once a week)
- Ages 60 to 69: about 32 times per year (two to three times a month)
- Ages 70 and older: about 17 times per year (once or twice a month)
The drop from your 20s to your 60s is steep, going from about 109 times a year down to 32. But it’s also gradual decade by decade, losing roughly 15 to 20 occasions per year each time. The percentage of people who are sexually active at all also declines: 73% of adults aged 57 to 64 are sexually active, dropping to 53% by ages 65 to 74 and 26% by ages 75 to 85.
The Once-a-Week Happiness Threshold
Researchers at the Society for Personality and Social Psychology analyzed data from over 30,000 people and found a clear pattern: relationship happiness increases as sexual frequency goes up, but only to a point. Once couples reach about once a week, the happiness benefits level off. Having sex two, three, or four times a week didn’t make couples measurably happier than those having sex once a week.
This finding is useful because it takes the pressure off. If you and your partner are connecting about once a week and both feel satisfied, there’s no evidence that pushing for more will improve your relationship. The plateau holds across age groups, genders, and relationship lengths.
What Counts as a “Sexless” Marriage
Clinicians and researchers generally define a sexless marriage as having sex fewer than 10 times per year, or less than once a month. By that definition, a meaningful percentage of married couples fall into this category. That said, “sexless” isn’t automatically a problem. Some couples land there by mutual preference, and both partners feel fine about it. It becomes an issue when there’s a gap between what one partner wants and what’s actually happening.
Why Frequency Drops Over Time
The decline isn’t just about aging bodies. Stress from work, parenting, and daily responsibilities is one of the most common reasons couples have less sex. Mental health plays a major role too. Depression, anxiety, low self-esteem, and fatigue all suppress desire. Relationship friction, particularly a lack of emotional trust or closeness, makes physical intimacy feel less appealing or even uncomfortable.
Hormonal shifts matter as well. During menopause, dropping estrogen levels can reduce desire and cause vaginal dryness that makes sex painful. Many women continue to have satisfying sex during and after menopause, but the transition period often creates a noticeable dip. For men, testosterone gradually declines with age, which can lower libido.
Medications are another underappreciated factor. Antidepressants, blood pressure medications, and certain other prescriptions can significantly dampen sex drive as a side effect. Alcohol, smoking, and recreational drugs also play a role. Even exercise has a complicated relationship with desire: too little can lower it, but extreme physical training can too.
Quality Matters More Than Frequency
If you searched this topic to figure out whether your sex life is “normal,” the most important finding from the research may be this: sexual satisfaction predicts relationship happiness far better than raw frequency does. Couples who feel emotionally safe and respected report higher satisfaction even when they’re having sex less often. Couples who feel pressured to hit a certain number often experience more distress, not less.
Long-term couples who report high satisfaction tend to share a few traits. They communicate openly about intimacy, including what they want and what isn’t working. They maintain emotional closeness through non-sexual affection like touch, conversation, and quality time. They adapt as life changes rather than clinging to a frequency that worked ten years ago. The number on the calendar matters less than whether both partners feel wanted, connected, and heard.