The average married couple in the United States has sex about once a week, or roughly 67 times per year, based on data from the General Social Survey. That number varies widely depending on age, relationship length, health, and life circumstances, so if your own frequency is higher or lower, that’s completely normal.
What the Numbers Actually Show
The General Social Survey, one of the longest-running and most respected social science surveys in the U.S., found that married adults average 67.3 sexual encounters per year. That works out to a little more than once a week. Adults overall, including single and unmarried people, averaged 57 times per year, making married couples slightly more sexually active than the general population.
Data from the National Survey of Families and Households puts the number in a similar range, finding that couples averaged between 6.6 and 7 sexual acts per month. These figures align well: whether you look at it monthly or annually, the ballpark is roughly once or twice a week for most married couples.
It’s worth noting that these are averages, which means they blend together couples having sex several times a week with couples who go months without it. The median (the true midpoint) tends to be slightly lower than the mean because a smaller number of highly active couples pull the average up.
How Frequency Changes With Age
Sexual frequency in marriage follows a predictable downward slope over time. Couples in their 20s and early 30s tend to have sex more often, sometimes two to three times per week, while couples in their 50s and 60s may average a few times a month or less. This decline isn’t a sign of a failing relationship. It reflects real biological and lifestyle shifts that accumulate over decades.
Hormonal changes play a significant role. Testosterone, which influences sex drive in both men and women, gradually decreases with age. Women going through perimenopause and menopause experience drops in estrogen that can affect arousal and physical comfort during sex. These aren’t problems to fix so much as natural transitions that often change what intimacy looks like rather than eliminating it entirely.
Beyond hormones, the practical demands of life matter enormously. Young children, career pressures, chronic health conditions, sleep deprivation, and caregiving responsibilities all compete for the energy that sexual activity requires. Couples in their 40s with teenagers at home face a very different landscape than newlyweds with free weekends.
The Once-a-Week Happiness Threshold
If you’re wondering whether you’re having “enough” sex, research points to a surprisingly specific answer. A study examining sexual frequency and relationship satisfaction found that the vast majority of highly satisfied couples, about 86% of the sample, fell into a profile where both partners were happy and having sex just under once a week.
The key finding across multiple studies in this area is that more sex correlates with greater happiness up to about once a week, but beyond that frequency, the additional benefit levels off. Couples having sex three or four times a week don’t report meaningfully higher satisfaction than those doing it once. This suggests that a baseline of regular sexual connection matters, but chasing a higher number doesn’t automatically translate to a better relationship.
This threshold is useful because it takes the pressure off. If you and your partner are connecting sexually once a week and both feel good about it, you’re right in line with where the happiest couples land.
Why Desire Shifts in Long-Term Relationships
A drop in sexual frequency over the course of a marriage is so common that researchers treat it as the norm rather than the exception. The reasons are a mix of biological, psychological, and relationship factors that layer on top of each other.
On the individual level, physical attraction to a partner, stress levels, self-esteem, and hormonal fluctuations all shape how much desire a person feels. Stress is a particularly powerful suppressor. When your nervous system is running in high gear from work deadlines or financial strain, your body deprioritizes sex in favor of survival mode. Self-esteem works similarly: people who feel less confident in their bodies or their role in the relationship often experience lower desire.
On the relationship level, something researchers call “desire discrepancy” is remarkably common. This is simply when one partner wants sex more often than the other. It doesn’t mean something is broken. Nearly every long-term couple experiences some degree of mismatch at various points, and it tends to fluctuate with life stages. The couples who navigate it well are generally those who talk about it openly rather than keeping score.
What Matters More Than Frequency
The number itself is less important than whether both partners feel satisfied with their sex life. A couple having sex twice a month and feeling great about it is in a healthier spot than a couple having sex three times a week where one partner feels pressured or disconnected. Quality, mutual enthusiasm, and emotional intimacy consistently predict relationship satisfaction more strongly than raw frequency.
Physical intimacy also extends well beyond sex. Couples who maintain regular non-sexual touch, such as holding hands, cuddling, or kissing, tend to report higher relationship satisfaction even during periods when sex is less frequent. This is especially relevant during life phases like early parenthood, recovery from illness, or menopause, when sexual activity may temporarily decline but closeness doesn’t have to.
If your frequency feels lower than you’d like, the most productive starting point is an honest conversation rather than a comparison to national averages. The “right” amount of sex is whatever works for both of you.