Working inward from the extremes, every maternal age group has swapped places in the last 8 years (e.g. 40+ and < 20, 20-24 and 35-39…). Blog post with code and CSV data links: https://aaronjbecker.com/posts/thirties-are-the-new-twenties-us-births-by-maternal-age-group/

Posted by aar0nbecker

15 comments

  1. Data source: [CDC WONDER data portal](https://wonder.cdc.gov/natality.html), 3 separate queries (1995-2002, 2003-2006, 2007-2024)

    Tools: python, matplotlib

    I just discovered the [matplotlib-label-lines package](https://github.com/cphyc/matplotlib-label-lines); it’s easy to use and produces nice results, highly recommended.

    [Blog post with visualization code (nothing that fancy this time, just a line plot) and links to download the CSV data](https://aaronjbecker.com/posts/thirties-are-the-new-twenties-us-births-by-maternal-age-group/) so you don’t have to use the WONDER query tool.

  3. thank god cuz my twenties are not going how i wanted them to 💀

  5. Most of the drop in fertility is from young women having access/education about contraceptives. It turns out in the past most babies just came into the world by chance and ignorance

  6. Sweet. Teen pregnancy is generally not great, and that seems like the biggest thing to change. 

  8. As a pregnant 39 year old, its because its harder and harder to “grow up”. I was living in house shares until I was 34, bought a house at 36, got married at 37 as I couldn’t afford it sooner. And that was with parental help. I didn’t have to do it in that order but I wanted to, I wanted the dream I was sold on. I would love to have done it all sooner.

  9. Seems inflicting poverty on everyone was the solution to ten pregnancies!

  11. the under 20 line declining is a good new 🙏❤️

  12. A few things to note, 16 and Pregnant premiered in Summer of 2009 and the ACA started covering contraception in 2012. Also easier access to the internet and therefore self education of pregnancy prevention was also around that time which could have influenced this trend.

  13. The non-existence of grandparents is friggin awesomesauce!

  14. Well, it’s the internet baby. Girls in their 20s are prime for whoring on the web. Kids later if any at all.

  15. What happened in 2007 or so to trigger a change in almost all ages?

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