The average married couple in the United States has sex about once a week. That said, the range is wide: General Social Survey data shows 25% of American adults report having sex weekly, 16% have sex two to three times per week, and 19% report two to three times per month. On the other end, about 10% report no sex at all in the past year.
What the Numbers Look Like by Age
Age is one of the strongest predictors of how often married couples have sex. Couples under 40 typically report about once per week. Between ages 40 and 59, the average drops to two or three times per month. After 60, most couples report once or twice per month, and sometimes less.
These are averages, not benchmarks. A couple in their 50s having sex once a week is perfectly common, and a couple in their 30s going through a dry spell of a few months isn’t unusual either.
Frequency Has Been Declining for Years
If you feel like you’re having less sex than couples a generation ago, the data backs that up. Between 1996 and 2008, 59% of married adults ages 18 to 64 reported having sex at least once a week. From 2010 through 2024, that number dropped to 49%. Researchers call this the “sex recession,” and it affects married couples, not just singles.
The reasons behind the trend aren’t entirely clear, but likely candidates include longer work hours, screen time, the mental load of modern parenting, and higher rates of reported stress and anxiety.
The “Once a Week” Happiness Threshold
One of the most widely cited findings in this area comes from a large study published by the Society for Personality and Social Psychology. Couples reported increasing relationship happiness as sexual frequency rose, but only up to about once a week. Beyond that, there was no additional boost in satisfaction. Having sex three or four times a week didn’t make couples measurably happier than once a week did.
This doesn’t mean more frequent sex is bad. It simply means that if you’re at roughly once a week and feeling good about your relationship, the numbers suggest you’re at the sweet spot. And if you’re below that but both partners are content, the number itself doesn’t matter.
What Matters More Than Frequency
Research published in The Journal of Sexual Medicine found that sexual communication, not sexual frequency, predicted relationship satisfaction. Couples who talked openly about what they wanted and enjoyed reported higher satisfaction regardless of how often they had sex. Frequency did affect how satisfied people were with the sex itself, but the overall health of the relationship depended more on whether partners could communicate about intimacy.
This finding held true for both men and women, even among younger couples where frequency tends to be higher. A warm interpersonal dynamic and the ability to talk about sex openly outweighed raw numbers.
Why Frequency Drops Over Time
A long-running German panel study tracked couples over time and found that the biggest drop in sexual frequency happens in the first few years of a relationship. After that initial decline, the frequency tends to level off. Getting married or moving in together didn’t independently cause a further drop. In other words, it’s the passage of time in any relationship, not marriage itself, that shifts things.
Children play a significant role too. New parents resume sexual activity about three months after delivery on average, typically at a pace of once or twice a month. Mothers and fathers often report different levels of desire during this period, with fathers generally wanting sex more frequently. For some couples, the disruption of early parenthood becomes a longer-term pattern, while others gradually return to their previous frequency.
Common Reasons Couples Have Less Sex
The list of factors that reduce sexual frequency is long, but a few show up consistently in clinical settings:
- Stress and mental load: Work pressure, financial worry, and general anxiety are among the most commonly reported reasons.
- Unresolved conflict: Ongoing tension or resentment between partners reliably suppresses desire.
- Health changes: Chronic illness, chronic fatigue, significant body changes, and disability all affect sex drive and physical comfort.
- Hormonal shifts: Perimenopause, menopause, and pregnancy alter libido in ways that can last months or years.
- Medication side effects: Certain antidepressants, blood pressure medications, and other common prescriptions can dampen arousal.
- Untreated mental health conditions: Depression, anxiety, and unresolved trauma frequently reduce interest in sex.
Less obvious factors include grief, restrictive cultural or religious attitudes toward sex, substance use, and simply not having had adequate sex education. Some people also identify as asexual, experiencing little or no sexual attraction, which can become a point of tension in a marriage if it’s not discussed openly.
What Counts as a “Sexless” Marriage
The commonly used clinical threshold is sex fewer than ten times per year, or roughly less than once a month. By that definition, about 20% of American marriages qualify as sexless. About 47% of married couples report having sex less than once a week, which is below average but well above the sexless threshold.
A sexless marriage isn’t automatically an unhappy one. Some couples genuinely prefer less frequent sex or find other forms of physical intimacy more meaningful. The problem arises when there’s a mismatch, one partner wants significantly more than the other, and neither person is talking about it. That gap, more than any specific number, is what tends to erode satisfaction over time.