Sex Among People In Their 30s: Frequency, Partners, And STI Rates

Americans in their 30s have sex an average of 77 times per year. 68.8% of men and 70.9% of women aged 30-39 report having vaginal sex in the past month.
split screen image with a donut graph on the left depicting that americans in their 30s have sex an average of 77 times per year, with a photograph of a happy couple in their 30s embracing on the right
Updated:December 2023

On average, Americans in their 30s are having partnered sex about 77 times per year. [1]

Key Statistics To Know:

  • Americans in their 30s report having sex an average of 77 times each year. [1]
  • 68.8% of men and 70.9% of women aged 30 to 39 reported having vaginal sex in the previous 30 days. [2]
  • 63% of men and 57.8% of women aged 30 to 39 reported having oral sex in the previous 30 days. [2]
  • Among men and women aged 30 to 39, 24.7% and 13.5% had engaged in anal sex in the previous 30 days, respectively. [2]
  • 14.1% of men aged 25 to 34 years old reported having no sexual activity in the past year, compared to 8% of men aged 35 to 44. [3]
  • 12.6% of women aged 25 to 34 reported having no sexual activity in the past year, compared to 8.5% of women aged 35 to 44. [3]
  • Overall, STI rates among those in their 30s have dramatically increased over 10 years, with rates increasing 55-363%.

In this article, we’ll explore sex partner counts among those in their 30s, along with how frequently people in their 30s have sexual activity, their overall sexuality, and STI diagnosis rates.

How Often Do People In Their 30s Have Sex?

donut graph depicting that americans in their 30s have sex an average of 77 times per year
  • Americans in their 30s report having sex an average of 77 times per year, compared to those in their 40s (an estimated average of 63 times per year), and in their 50s (an estimated average of 38 times per year). [1]
  • A 2021 study found that 68.8% of men aged 30 to 39 had vaginal sex in the previous 30 days. [2]
  • That same study found that 70.9% of women aged 30 to 39 had vaginal sex in the previous 30 days. [2]
  • In 2021, 63% of men aged 30 to 39 reported having oral sex in the previous 30 days. [2]
  • In 2021, 57.8% of women aged 30 to 39 reported having oral sex in the previous 30 days. [2]
  • Among men and women aged 30 to 39, 24.7% and 13.5% had engaged in anal sex in the previous 30 days, respectively. [2]

Sexual frequency tends to decline with age.

While those in their 30s have slightly less sex than those in their 20s (an average of 80 times per year), a majority of adults in their 30s are sexually active.

Larger declines tend to happen in one’s 40s and beyond.

How Many Sex Partners Do People Have In Their 30s?

bar graph depicting what percentage of people report having 3 or more sexual partners in the past year: 16.8% of men aged 25-34, 5.5% of men aged 35 to 44, 7.3% of women aged 25 to 34, and 3.7% of women aged 35 to 44
  • One two-year study (from 2016 to 2018) found that 14.1% of men aged 25 to 34 years old reported having no sexual activity in the past year, compared to 8% of men aged 35 to 44. [3]
  • That same study found that 12.6% of women aged 25 to 34 reported having no sexual activity in the past year, compared to 8.5% of women aged 35 to 44. [3]
  • Among women aged 25 to 34, 72.7% reported having 1 sexual partner in the past year, 7.3% reported having 2 sexual partners in the past year, and 7.3% reported having 3 or more sexual partners in the past year. [3]
  • Among women aged 35 to 44, 84.3% reported having 1 sexual partner in the past year, 5.7% reported having 2 sexual partners in the past year, and 3.7% reported having 3 or more sexual partners in the past year. [3]
  • Among men aged 25 to 34, 58% reported having 1 sexual partner in the past year, 11.6% reported having 2 sexual partners in the past year, and 16.8% reported having 3 or more sexual partners in the past year. [3]
  • Among men aged 35 to 44, 77.3% reported having 1 sexual partner in the past year, 9.4% reported having 2 sexual partners in the past year, and 5.5% reported having 3 or more sexual partners in the past year. [3]

As individuals age, the likelihood of being in a committed relationship increases.

Thus, it makes sense that a majority of men and women in their 30s report only one sex partner.

As with other age groups, men in their 30s are more likely to have a higher number of sex partners compared to women, though a majority still have just one partner.

STIs During 30s

text graphic on stis during 30s that reads: sexually transmitted infections (stis) increased the most over a decade (2011 to 2021 among those aged 25 to 34, compared to those aged 35 to 44.
  • Among adults aged 25 to 34 in the United States, STI rates rose significantly nationwide over a decade, including HIV diagnoses [4]:
    • Chlamydia: 476,980 in 2021 (306,321 in 2011)
    • Gonorrhea: 257,525 in 2021 (80,402 in 2011)
    • Syphilis: 20,325 in 2021 (4,392 in 2011)
    • HIV (diagnosis): 13,081 in 2021 (11,444 in 2011)
  • Among adults aged 35 to 44 in the United States, most STI rates rose significantly nationwide over a decade, aside from HIV, which decreased [5]:
    • Chlamydia: 128,570 in 2021 (62,388 in 2011)
    • Gonorrhea: 103,782 in 2021 (23,795 in 2011)
    • Syphilis: 12,863 in 2021 (2,885 in 2011)
    • HIV (diagnosis): 7,453 in 2021 (9,060 in 2011)

Overall, STI rates have dramatically increased in just 10 years, with rates increasing 55-363%.

Thankfully, HIV rates have reduced a bit among 35-44 year-olds.

No matter one’s age, practicing safer sex is a necessity — STI testing, limiting sex partners, and condoms are the best options available.

Sources: