And God said, Let us make man in our image, after our likeness:..And God blessed them, and God said unto them, Be fruitful, and multiply, and replenish the earth, and subdue it: and have dominion over the fish of the sea, and over the fowl of the air, and over every living thing that moveth upon the earth. (Genesis 1:26, 28)
And he answered and said unto them, Have ye not read, that he which made them at the beginning made them male and female, And said, For this cause shall a man leave father and mother, and shall cleave to his wife: and they twain shall be one flesh? Wherefore they are no more twain, but one flesh. What therefore God hath joined together, let not man put asunder. (Matthew 19:4-6)
...I would that all men were even as I myself. But every man hath his proper gift of God, one after this manner, and another after that. (1 Corinthians 7:7)
In 2011-2015, among American women ages 15 to 44, 45% had not had any children; 20% had two children; 17% had one child; 18% had three or more children. Between 2007 and 2020, the total fertility rate (TFR) in the United States declined from 2.12 to 1.64... During the 1960s and 1970s, postponement of childbearing resulted in a steep drop in the birth rate among American women ages 20 to 24. After 1975, U.S. birth rates [somewhat] rose for women in their 30s, as older mothers had the children they had postponed earlier in life. Today, U.S. birth rates are highest for women in the age groups of 25 to 29 and 30 to 34
" width="200" height="350" alt=" " border="1"> Sources: Centers for Disease Control and Prevention, National Center for Health Statistics.
In the United States, fertility rates have fallen since 1990 among all major racial/ethnic groups, declining fastest among African Americans and Latinas. - https://www.prb.org/resources/why-is-the-u-s-birth-rate-declining/ © 2023 PRB. All Rights ReservedMay 28, 2021 — Among sexually active women who were not seeking pregnancy, 88% were using a contraceptive method in 2016, and this proportion has remained steady since 2002.
>99% of sexually experienced U.S. women aged 15–44 have used at least one contraceptive method as of 2008 ... and this proportion has remained steady since 2002. Almost all women who identify as religious have ever used contraceptive methods—99% of mainline Protestants, evangelical Protestants and Catholics, and 96% of people with other religious affiliations.7 Sexually active couples who do not use any method of contraception have approximately an 85% chance of experiencing a pregnancy over the course of a year - https://www.guttmacher.org/fact-sheet/contraceptive-use-united-statesIn 2015–2017, 64.9% of the 72.2 million women aged 15–49 in the United States were currently using contraception. The most common contraceptive methods currently used were female sterilization (18.6%), oral contraceptive pill (12.6%), long-acting reversible contraceptives (LARCs) (10.3%), and male condom (8.7%). - https://www.cdc.gov/nchs/products/databriefs/db327.htmOf all live births in the United States during 2018-2020 (average), 23.7% were Hispanic, 52.1% were white, 15.2% were black, 0.8% were American Indian/Alaska Native and 6.8% were Asian/Pacific Islander. - https://www.marchofdimes.org/peristats/data?reg=99&top=2&stop=10&lev=1&slev=4&obj=3Jan 9, 2023: General Single Parent Households Statistics. According to a Pew Research study, the United States has the highest number of children living in single parent households. In contrast, countries like Mali, Afghanistan, Turkey, Vietnam, and Japan recorded only single-digit percentages in single parent households. - https://financesonline.com/single-parent-statistics/Jun 17, 202: Data from the United States Census Bureau shows that nearly 18.5 million children grow up without their fathers, which has in return led to the United States owning the title of the world's leader in fatherlessness.2 - https://owens.house.gov/posts/fox-news-americas-crisis-is-a-lack-of-fathers.Aug 8, 2018: Recent estimates show that about 40 percent of births in the United States occur outside of marriage, up from 28 percent in 1990 (Child Trends, 2016)Aug 2, 2022 — Births to Unmarried Women: Two in five (41%) births were to unmarried mothers in 2020. - https://datacenter.kidscount.org/updates/show/300-births-dropToday, only about 64 percent of children live in homes with two parents who are married, representing an all-time low (Pew Research Center). Trend data shows a stark and steady decline since 1960, when nearly 88 percent of children lived with married parents. - https://gillespieshields.com/40-facts-two-parent-families/Mar 12, 2022: About 4 out 10 children were born to unwed mothers. Of single parent families with children under the age of 18, 80 percent were headed by single mothers. Around half (52.3%) of single mothers have never married, almost a third (29.3%) are divorced, 18.4% are either separated or widowed. Half have one child, 30% have two. About two thirds are White, one third Black - https://singlemotherguide.com/single-mother-statistics/Another 2021 study looking at the living arrangements of parents with children at home indicates that just over 50% of single parents have never married. - https://psychcentral.com/relationships/finding-love-as-a-single-momIn the United States today, nearly 24 million children live in a single-parent family. This total, which has been rising for half a century, covers about one in every three kids across America - https://www.aecf.org/blog/child-well-being-in-single-parent-familiesAn estimated 24.7 million children (33%) live absent their biological father. - https://fathers.com/the-extent-of-fatherlessness/2012: 57.6% of black children, 31.2% of Hispanic children, and 20.7% of white children are living absent their biological fathers. - https://fathers.com/the-extent-of-fatherlessness/Data from 2019 indicates that: Black and American Indian kids are most likely to live in a single-parent families (64% of Black children and 52% of American Indian children fit this demographic). - https://www.aecf.org/blog/child-well-being-in-single-parent-familiesMississippi 55.8%; Louisiana 54.5%; New Mexico 53.2%; Nevada 48.8%; Alabama 48.4%; Delaware 48.1%; Florida; 47.2% are the leading states for unmarried parents - https://www.cdc.gov/nchs/pressroom/sosmap/unmarried/unmarried.htmThe average dad is now 30.9 years old at their child's birth. - https://www.science.org/content/article/average-age-new-us-dads-has-passed-30As reported by the Center for Children and Families: [u, 2009-2011] 40% of all live births in the US are to single mothers. ➲ 90% of welfare recipients are single mothers - https://post.ca.gov/portals/0/post_docs/publications/Building%20a%20Career%20Pipeline%20Documents/safe_harbor.pdf
The total fertility rate (TFR) drops sharply right when modern contraception and then legal abortion become widespread, and both trends track closely with the long‑run decline from baby‑boom levels to today’s sub‑replacement fertility.12345
1. Big picture: TFR vs. time
Approximate U.S. total fertility rate (births per woman):6789
- 1957 (baby boom peak): ~3.7–3.8 births per woman; general fertility 122.9 births per 1,000 women 15–44.1011
- 1960: still ~3.6–3.7 (high fertility, early marriage, little pill use).1213
- 1970: ~2.5 (sharp drop underway).1415
- 1976: ~1.74 (below replacement; near the low point of the 1970s).1617
- 1980s–1990s: rebounds to ~1.8–2.0; around 2.08 in 1990, ~2.0 by 1999.1819
- 2010: ~1.93.20
- 2019: ~1.71.21
- 2023: ~1.62 (about 22% below 1990).22
- 2024 provisional: around 1.6 or slightly below, an all‑time low.2324
So the key structural shift is late 1960s–1970s: TFR falls from ~3.6 to ~1.7 as contraceptive prevalence and legalized abortion rise.
2. Contraception use vs. time
Any contraception (married couples / women)
From CDC NSFG/series reports:2526272829
- 1965: ~63% of married couples 15–44 using some method; pill/IUD barely introduced.30
- 1973: ~70% using contraception.31
- 1976: ~68% using contraception.32
- 1982: 54% of women 15–44 using a method (different denominator, but shows broad use).33
- 1988: 60% of women 15–44 using a method.34
- 1995: 64% using contraception.35
- 2006–2010: 62.2% of women 15–44 using a method.36
- 2011–2013: 61.7% using a method.37
- 2015–2017: 64.9% of women 15–49 using contraception.38
- 2017–2019: 65.3% of women 15–49 using contraception.39
Method mix (key shifts)
- 1965–1973: Rapid adoption of new
methods—pill, IUD, male sterilization—which “did not
exist or rarely were used before 1960.”4041
- Pill use rises sharply; condom and rhythm decline.
- 1973–1982: Pill use falls; contraceptive sterilization rises to become leading method (28% of wives using sterilization by 1982).4243
- 2000s–2010s: LARC (IUD/implant) use rises from ~1–2% to ~10% of women 15–49 (and 16% of contraceptive users by 2018).4445
Overall, between 1965 and the late 1970s, both prevalence and effectiveness of contraception jump, while TFR collapses from ~3.6 to ~1.7.464748
3. Abortion trends vs. fertility
From Guttmacher and summary stats:4950
- Pre‑1973: Abortions underreported; illegal in most states.
- 1973 (Roe v. Wade): National legalization; abortions ~616,000, rate ~16.3 per 1,000 women 15–44.5152
- Peak ~1980: ~1.55–1.6 million abortions per year; rate ~29–30 per 1,000 women; abortion ratio ~30 per 100 pregnancies ending in birth or abortion.5354
- 1990s–2010s: Abortion rate steadily declines; by 2016 ratio down ~40% from its 1983 peak to ~18 abortions per 100 pregnancies; rate ~13–14 per 1,000 women.55
- 2020: Guttmacher: ~930,000 abortions; rate 14.4 per 1,000 women 15–44; abortion ratio 20.6 per 100 pregnancies.5657
Overlay with TFR:
- TFR falls before and during the early surge in abortions: below replacement by early 1970s, while abortion rates are rising and pill/sterilization use is spreading.585960
- Through the 1980s–2010s, TFR remains below replacement even as abortion rates decline, because effective contraception, delayed marriage, and socio‑economic factors keep desired family size and realized births low.61626364
4. Correspondence summarized
From ~1960 to today, you can reasonably trace:
- Pre‑1960:
- 1960s:
- 1970s:
- 1980s–1990s:
- 2000s–2020s:
- Contraceptive use still ~60–65% of women, with big rise in LARC and continued heavy sterilization.828384
- Abortion ratio and rate decline substantially vs. 1980s, but remain non‑trivial.8586
- TFR falls further to ~1.7, then ~1.6, as people delay marriage/childbearing and have fewer children overall.878889
So the PRB statement is well supported: the steep 1970s drop in TFR corresponds closely to (1) rapid diffusion of highly effective contraception and (2) the onset of legal abortion, together with delayed marriage and socio‑economic shifts.90919293
If you want, the next step could be a compact table showing decade points: (TFR, % women using contraception, abortion rate per 1,000), which would be useful for your debates.
https://usafacts.org/articles/how-have-us-fertility-and-birth-rates-changed-over-time/↩︎
https://en.wikipedia.org/wiki/Total_fertility_rate↩︎
https://www.cdc.gov/nchs/data/series/sr_23/sr23_010.pdf↩︎
https://www.guttmacher.org/report/pregnancies-births-abortions-in-united-states-1973-2020↩︎
https://www.cdc.gov/nchs/data/ad/ad102acc.pdf↩︎
https://www.cdc.gov/nchs/hus/topics/births.htm↩︎
https://en.wikipedia.org/wiki/Total_fertility_rate↩︎
https://www.cdc.gov/nchs/data/nvsr/nvsr74/nvsr74-3.pdf↩︎
https://usafacts.org/articles/how-have-us-fertility-and-birth-rates-changed-over-time/↩︎
https://en.wikipedia.org/wiki/Total_fertility_rate↩︎
https://usafacts.org/articles/how-have-us-fertility-and-birth-rates-changed-over-time/↩︎
https://www.cdc.gov/nchs/hus/topics/births.htm↩︎
https://en.wikipedia.org/wiki/Total_fertility_rate↩︎
https://en.wikipedia.org/wiki/Total_fertility_rate↩︎
https://www.cdc.gov/nchs/hus/topics/births.htm↩︎
https://www.cdc.gov/nchs/hus/topics/births.htm↩︎
https://en.wikipedia.org/wiki/Total_fertility_rate↩︎
https://www.cdc.gov/nchs/data/nvsr/nvsr74/nvsr74-3.pdf↩︎
https://en.wikipedia.org/wiki/Total_fertility_rate↩︎
https://www.cdc.gov/nchs/hus/topics/births.htm↩︎
https://www.cdc.gov/nchs/hus/topics/births.htm↩︎
https://www.cdc.gov/nchs/data/nvsr/nvsr74/nvsr74-3.pdf↩︎
https://www.contemporaryobgyn.net/view/record-low-us-fertility-rate-reported-in-2024↩︎
https://www.pbs.org/newshour/nation/the-u-s-fertility-rate-reached-a-new-low-in-2024-cdc-data-shows↩︎
https://www.cdc.gov/nchs/data/series/sr_23/sr23_010.pdf↩︎
https://www.cdc.gov/nchs/data/ad/ad102acc.pdf↩︎
https://www.cdc.gov/nchs/products/databriefs/db388.htm↩︎
https://www.cdc.gov/nchs/products/databriefs/db173.htm↩︎
https://www.cdc.gov/nchs/products/databriefs/db327.htm↩︎
https://www.cdc.gov/nchs/data/series/sr_23/sr23_010.pdf↩︎
https://www.cdc.gov/nchs/data/series/sr_23/sr23_010.pdf↩︎
https://www.cdc.gov/nchs/data/series/sr_23/sr23_010.pdf↩︎
https://www.cdc.gov/nchs/data/ad/ad102acc.pdf↩︎
https://pubmed.ncbi.nlm.nih.gov/9494809/↩︎
https://pubmed.ncbi.nlm.nih.gov/9494809/↩︎
https://www.cdc.gov/nchs/products/databriefs/db173.htm↩︎
https://www.cdc.gov/nchs/products/databriefs/db173.htm↩︎
https://www.cdc.gov/nchs/products/databriefs/db327.htm↩︎
https://www.cdc.gov/nchs/products/databriefs/db388.htm↩︎
https://www.restoredcdc.org/www.cdc.gov/nchs/data/series/sr_23/sr23_010.pdf↩︎
https://www.cdc.gov/nchs/data/series/sr_23/sr23_010.pdf↩︎
https://www.cdc.gov/nchs/data/ad/ad102acc.pdf↩︎
https://www.cdc.gov/nchs/data/series/sr_23/sr23_010.pdf↩︎
https://www.cdc.gov/nchs/products/databriefs/db188.htm↩︎
https://www.cdc.gov/nchs/products/databriefs/db327.htm↩︎
https://en.wikipedia.org/wiki/Total_fertility_rate↩︎
https://www.cdc.gov/nchs/data/ad/ad102acc.pdf↩︎
https://www.cdc.gov/nchs/data/series/sr_23/sr23_010.pdf↩︎
https://www.guttmacher.org/report/pregnancies-births-abortions-in-united-states-1973-2020↩︎
https://en.wikipedia.org/wiki/Abortion_statistics_in_the_United_States↩︎
https://en.wikipedia.org/wiki/Abortion_statistics_in_the_United_States↩︎
https://www.guttmacher.org/report/pregnancies-births-abortions-in-united-states-1973-2020↩︎
https://www.guttmacher.org/report/pregnancies-births-abortions-in-united-states-1973-2020↩︎
https://en.wikipedia.org/wiki/Abortion_statistics_in_the_United_States↩︎
https://en.wikipedia.org/wiki/Abortion_statistics_in_the_United_States↩︎
https://www.guttmacher.org/report/pregnancies-births-abortions-in-united-states-1973-2020↩︎
https://en.wikipedia.org/wiki/Abortion_statistics_in_the_United_States↩︎
https://en.wikipedia.org/wiki/Total_fertility_rate↩︎
https://www.guttmacher.org/report/pregnancies-births-abortions-in-united-states-1973-2020↩︎
https://www.cdc.gov/nchs/data/series/sr_23/sr23_010.pdf↩︎
https://www.cbo.gov/publication/59899↩︎
https://www.pbs.org/newshour/nation/the-u-s-fertility-rate-reached-a-new-low-in-2024-cdc-data-shows↩︎
https://usafacts.org/articles/how-have-us-fertility-and-birth-rates-changed-over-time/↩︎
https://www.guttmacher.org/report/pregnancies-births-abortions-in-united-states-1973-2020↩︎
https://www.cdc.gov/nchs/data/series/sr_23/sr23_010.pdf↩︎
https://www.heritage.org/marriage-and-family/report/crossroads-american-family-life-the-intersection-tradition-and-modernity↩︎
https://en.wikipedia.org/wiki/Total_fertility_rate↩︎
https://www.cdc.gov/nchs/data/series/sr_23/sr23_010.pdf↩︎
https://www.cdc.gov/nchs/data/series/sr_23/sr23_010.pdf↩︎
https://en.wikipedia.org/wiki/Total_fertility_rate↩︎
https://www.cdc.gov/nchs/hus/topics/births.htm↩︎
https://www.cdc.gov/nchs/data/ad/ad102acc.pdf↩︎
https://www.cdc.gov/nchs/data/series/sr_23/sr23_010.pdf↩︎
https://en.wikipedia.org/wiki/Abortion_statistics_in_the_United_States↩︎
https://www.guttmacher.org/report/pregnancies-births-abortions-in-united-states-1973-2020↩︎
https://www.cdc.gov/nchs/hus/topics/births.htm↩︎
https://en.wikipedia.org/wiki/Total_fertility_rate↩︎
https://pubmed.ncbi.nlm.nih.gov/9494809/↩︎
https://www.cdc.gov/nchs/data/ad/ad102acc.pdf↩︎
https://www.guttmacher.org/report/pregnancies-births-abortions-in-united-states-1973-2020↩︎
https://en.wikipedia.org/wiki/Total_fertility_rate↩︎
https://www.cdc.gov/nchs/products/databriefs/db388.htm↩︎
https://www.cdc.gov/nchs/products/databriefs/db327.htm↩︎
https://www.cdc.gov/nchs/products/databriefs/db188.htm↩︎
https://en.wikipedia.org/wiki/Abortion_statistics_in_the_United_States↩︎
https://www.guttmacher.org/report/pregnancies-births-abortions-in-united-states-1973-2020↩︎
https://www.pbs.org/newshour/nation/the-u-s-fertility-rate-reached-a-new-low-in-2024-cdc-data-shows↩︎
https://usafacts.org/articles/how-have-us-fertility-and-birth-rates-changed-over-time/↩︎
https://www.cdc.gov/nchs/data/nvsr/nvsr74/nvsr74-3.pdf↩︎
https://usafacts.org/articles/how-have-us-fertility-and-birth-rates-changed-over-time/↩︎
https://www.cdc.gov/nchs/data/ad/ad102acc.pdf↩︎
https://www.guttmacher.org/report/pregnancies-births-abortions-in-united-states-1973-2020↩︎
https://www.cdc.gov/nchs/data/series/sr_23/sr23_010.pdf↩︎
https://www.cdc.gov/nchs/data-visualization/natality-trends/index.htm↩︎
https://www.cdc.gov/nchs/state-stats/births/fertility-rate.html↩︎