Married couples in the United States have sex about once a week on average, which works out to roughly 60 to 65 times per year. That said, “average” hides a wide range. About 25% of married adults report having sex weekly, while 16% have sex two or three times per week, and nearly half of all married couples have sex less than once a week.
What the Numbers Actually Look Like
Rather than a single average, sexual frequency among married couples falls across a broad spectrum. National survey data breaks it down like this:
- Four or more times per week: 5% of adults
- Two to three times per week: 16%
- Once per week: 25%
- Two to three times per month: 19%
- Once a month: 17%
- A few times per year or less: 17%
The largest single group, at 25%, lands right at once per week. But add up everyone below that line and you’ll find that roughly half of married couples have sex less often than weekly. That’s a normal distribution, not a warning sign.
How Frequency Changes With Age
Sexual frequency holds relatively steady through your 20s, 30s, and early 40s, then drops more noticeably. A 2020 survey found that about 50% of men and 53 to 54% of women between the ages of 25 and 44 have sex at least once a week. For younger adults (18 to 24), the numbers are a bit more uneven: 37% of men and 52% of women reported weekly sex, likely reflecting the wider variety of relationship situations in that age range.
The sharpest decline shows up after 50. Data collected over 25 years through the General Social Survey found that people in their 50s had the biggest drop in sexual frequency compared to their younger selves. That doesn’t mean sex disappears. A study from Ireland found that 75% of people between 50 and 64 were still sexually active. By age 75 and older, that number fell to about 23%. The decline is driven by a combination of biological aging, health changes, and simple habituation, the natural tendency for novelty to wear off in any long-term routine.
The Once-a-Week Sweet Spot
If you’re wondering whether more sex always means a happier marriage, the research suggests there’s a ceiling. A study of male-female couples published through the American Psychological Association found that the vast majority of highly satisfied couples, about 86%, had sex just under once a week. Couples who had sex more often than that weren’t meaningfully happier.
This doesn’t mean once a week is a magic number you should aim for. It means that beyond a baseline of regular intimacy, other factors in the relationship (communication, emotional connection, shared goals) matter more than adding extra frequency. Couples who are happy with their sex life at twice a month aren’t doing it wrong.
How Kids Change the Equation
New parents experience a well-documented drop in sexual frequency. Longitudinal research tracking couples through their transition to parenthood found that the quality of both sensual and sexual connection declined significantly after a baby arrived. Most couples resume sex about three months after delivery, but the typical frequency settles at once to twice a month during the early parenting years.
There’s also a mismatch in desire that’s worth knowing about. In those early parenting months, new mothers typically reported wanting sex somewhere between twice a month and once a week, while new fathers reported desire levels between twice a week and once a day. That gap can create tension if couples don’t talk about it openly. The dip is temporary for most couples, but “temporary” can mean several years when young children are in the picture.
When “Not Enough” Becomes Sexless
Researchers generally define a sexless marriage as one with fewer than 10 sexual encounters per year. By that standard, about 20% of American marriages qualify. Another 10% of adults report having no sex at all in the past year.
A sexless marriage isn’t automatically a troubled one. Some couples have low desire on both sides and are perfectly content. The issue arises when there’s a significant gap between what one partner wants and what’s actually happening. That desire discrepancy, not the raw number, is what predicts dissatisfaction.
The National Trend Has Been Flat
Despite headlines suggesting Americans are having less sex than ever, the long-term data tells a more nuanced story. The General Social Survey tracked sexual frequency from 1989 through the mid-2000s and found no meaningful change over that period. The average hovered between 59 and 65 times per year across every wave of data collection. In 1989 it was 59.5 times per year. In 2004 it was 59.6. Some more recent analyses have suggested a modest decline since then, particularly among younger adults, but for married couples specifically the shift has been small.
What has changed is how much people talk and worry about it. The availability of comparison data (articles exactly like this one) can make couples feel like they’re falling short when they’re squarely in the normal range. If both partners feel satisfied with their frequency, the number itself doesn’t matter much. The averages are useful as a reference point, not a benchmark.