I had this posted on another sub, but that sub has since died so I'm going to repost it here. There's no grandiose point to this thread; some topics keep coming up again and again. I've compiled a bit of a repository of statistics on marriage, divorce, fertility, and sexual history. I'm formalizing the list, giving sources, and providing some key facts from the sources. I use this to keep stats on hand, and I figure others could use it as well. If the mods feel this isn't a good post (because I admit there isn't much discussion to be had) delete it. I'll edit this post as I find new/better stats so don't be surprised if you notice changes over time.

“Custodial Mothers and Fathers and Their Child Support: 2013”

  • 17.5% of custodial parents were fathers
  • 53.1% of custodial mother had an agreement, legal or informal, for child support, while only 31.4% of custodial fathers had the same
  • Of those without agreements, 70.3% of mothers provided some form of non-cash support such as gifts or reimbursements. 59.9% of fathers did the same
  • On average, fathers had to pay $480 a month, but only paid $328
  • On average, mothers had to pay $536 a month, but only paid $401
  • 46.2% of fathers and 40.7% mothers paid their amounts due in full
  • 26.1% of mothers and 25.8% of fathers did not pay any of the agreed on amount
  • 31.2% of custodial mothers and 17.4% of custodial fathers were impoverished
  • 46.5% of custodial mothers and 24.1% of custodial fathers were enrolled in at least one government assistance program, most commonly food stamps

“First Marriages in the United States: Data From the 2006–2010 National Survey of Family Growth”

  • The percent of women aged 15-44 who were currently married in their first married dropped from 44% to 36% from 1982 to 2010
  • Over the same time period, the percent of women currently cohabitating rose from 3% to 11%
  • The percent of women currently married in their first marriage increases with education; 37% of high school drop outs are married compared to 63% with a master’s degree or higher
  • Cohabitation decreased with education; 20% of women who were high school drop outs are currently cohabiting compared to 6.8% with a bachelor’s degree
  • The median age of first marriage for women is 25.8 years and 28.3 for men
  • The probability of a woman getting married at least once by the age was 40 wasn’t different between 1995 and 2010, though the probability at younger ages was higher in 1995
  • Education in women is a better predictor of martial success than men; 39% of women who were high school dropouts were still married after 20 years compared to 78% with a college degree. For men, this trend is 54% and 65% respectively.
  • Having children prior to first married decreases the chances of a marriage lasting 20 years; from 56% to 33% for women and 59% to 43% for men
  • If a couple got married before they were 20, their marriage only had a 46% chance of surviving to 15 years, compared to 73% if they were over 25

"Sexual Behavior, Sexual Attraction, and Sexual Identity in the United States: Data From the 2006–2008 National Survey of Family Growth"

  • Women aged 15-44 reported a median of 3.2 sexual partners during their lifetime while men reported 5.1. Note that while this is self-reported, the true average is likely to lie somewhere between the two values.
  • 21% of men and 8% of women reported having more than 15 partners throughout their lifetime
  • Teenage women reported 1.4 sexual partners, while teenage men reported 1.8
  • Women in their early 40’s reported a median partner count of 3.4, while men in the same age group reported 6.4
  • By age 30, 1.9% of women claim to have no sexual partners, while at the same age group 3.1% of men say the same
  • By their early 40’s, these numbers drop to 0.4% and 1.3% respectively

“Births: Final Data for 2014”

  • The rate has been largely constant since 1970 at ~65 per 1000 women
  • The current total fertility rate is 1.9 children per woman, slightly below the replacement level of 2.1
  • The average age of the mother for her first child’s birth was 26.3, a slight increase from 26.0 in the previous year
  • 40.6% of all births were to unmarried women, up from 18.4% in 1980
  • Births to unmarried mothers has been at a small but steady decline since 2009, when it was 41% of all births

"Income and poverty in the united states: 2015"

  • Median income for single men in 2015 is 40,000 compared to 29,000 for women
  • When counting only full time workers, this moves to 51,000 for men and 41,000 for women
  • The wage gap has been slowly but steadily closing since the 60’s

"Women in the Labor Force: A Databook" (From 2010)

  • 52% of women are in the labor force
  • 71% of mothers with children un 18 are in the labor force
  • 47% of employed people are women
  • 57% of families had both parents work
  • 18% of families only had the man work
  • In families with duel earners, women provide 36% of the income
  • 27% of working wives earn more than their husbands
  • 9.4% of mother with children under three years old are unemployed, whereas 8.5% of men are.
  • Construction managers (5.9%), mechanical engineers (5.9%), and fire fighters (3.4%) have some of the lowest female employment rates
  • Kindergarten teachers (97.8%), speech language pathologists (95.8%), and accountants (92.2%) have some of the highest female employment rates
  • The wage gap increases with education (from 0.76 for high school dropout to 0.71 for doctoral degree) when nothing but employment status is considered.
  • Teachers, technicians, and computer specialists have the smallest wage gap (0.92 – 1.04)
  • Sales agents, doctors, and loan officers had the largest wage gap (~0.65)

EDIT: Please note, these are not comprehensive summaries. Each report has a lot more stats than what I presented.