The United States recorded more births in 2024 than in 2023 — but the nation is actually less fertile, not more. Final birth data released by the CDC's National Center for Health Statistics (NCHS) reveals a paradox that reflects the complexity of demographic change in modern America: the raw number of births increased by 1%, reaching 3,628,934, while the general fertility rate simultaneously declined by 1%.
The distinction matters. The absolute number of births increased because the U.S. population grew — not because individuals became more likely to have children. The general fertility rate (GFR) — the number of births per 1,000 women aged 15 to 44, which controls for population size — fell from 54.5 in 2023 to 53.8 in 2024, according to NCHS Data Brief No. 535, authored by Joyce A. Martin, M.P.H., Brady E. Hamilton, Ph.D., and Michelle J.K. Osterman, M.H.S.
This is not an anomaly. The U.S. fertility rate has been declining for decades, with brief interruptions. The 2024 data continues a trajectory that has now seen the GFR fall from a modern peak of approximately 69 in 2007 to below 54 in 2024 — a nearly 22% decline over 17 years.
What the 2024 Final Birth Data Shows — The Full Picture
The NCHS final birth data, which supersedes the provisional data released in April 2025, uses updated U.S. Census population estimates to calculate official rates. This adjustment — switching from provisional to final population data — is why the April 2025 provisional report initially showed a 1% GFR increase (using one Census population denominator) while the July 2025 final report corrected it to a 1% decrease. The CDC's NCHS blog explained this revision directly.
Key findings from the final 2024 birth data:
| 2024 U.S. Birth Data — Final Figures | Data |
| Total births in 2024 | 3,628,934 (↑ 1% from 2023's 3,596,017) |
| General fertility rate (GFR) | 53.8 births per 1,000 women ages 15–44 (↓ 1% from 54.5 in 2023) |
| Birth rates for women ages 15–34 | Decreased |
| Birth rates for women ages 35–39 | Unchanged |
| Birth rates for women ages 40–44 | Increased |
| Teen birth rate (ages 15–19) — provisional 2024 | 12.7 per 1,000 (record low; ↓ 3% from 2023) |
| Birth rate for women ages 20–24 — provisional 2024 | 56.7 (record low) |
| Primary cesarean delivery rate | 22.9% (↑ from 2023) |
| Low-risk primary cesarean delivery rate — provisional 2024 | 26.6% (unchanged) |
| Preterm birth rate — provisional 2024 | 10.41% (unchanged from 2023) |
| Medicaid as source of payment for delivery | ↓ 3% in 2024; ↓ 6% since 2016 |
The Age-Specific Story — Younger Women Are Having Fewer Babies; Older Women Are Having More
The age-specific birth rate data tells a consistent story: younger women are having children at historically low rates, while older women are increasingly becoming mothers. This shift reflects a decades-long deferral of childbearing driven by changing educational norms, economic pressures, and evolving social expectations.
Teen birth rates continue their remarkable long-term decline. The 2024 provisional teen birth rate of 12.7 per 1,000 women ages 15–19 — down 3% from 2023 — represents another record low in a trend of continuous decline that has seen teen birth rates fall by more than 70% since their 1991 peak of approximately 62 per 1,000. This is one of the most sustained positive public health trends in modern American reproductive history, driven by improved contraceptive access, changing social norms, and targeted public health education.
Similarly, birth rates for women ages 20–24 (56.7 per 1,000) continued falling to record low levels. These trends in younger women are partially offset by the continued increase in birth rates for women ages 40–44 — a cohort that has seen near-continuous rate increases since 1985. Advances in assisted reproductive technology, improved maternal health care, and changed social expectations about the appropriate age for childbearing all contribute to this sustained trend.
The C-Section Rate — A Rising Concern
The primary cesarean delivery rate rose to 22.9% in 2024, continuing an upward trend that has persisted for years. The provisional 2024 data showed a total cesarean rate of 32.4% (which includes repeat cesareans). A primary cesarean delivery rate of nearly 23% significantly exceeds the World Health Organization's recommendation that cesarean rates should not exceed 10–15% of all births — above which the evidence shows increasing risk without additional health benefit at the population level.
The rise in C-section rates has multiple drivers: increased maternal age at birth, higher rates of obesity (which increases surgical delivery risk and likelihood), more multiple gestation births, greater medicolegal risk aversion among providers, and demand-side factors including patient preferences. Some increase in primary C-sections reflects an appropriate clinical response to genuine indications. But the sustained upward trend suggests that some portion of the increase represents discretionary rather than medically necessary cesareans — with consequences for maternal recovery time, future pregnancy risks, and healthcare costs.
The Preterm Birth Rate — A Persistent Challenge
The preterm birth rate of 10.41% in 2024 — unchanged from 2023 and from the provisional 2025 data — means that roughly 1 in 10 U.S. births continues to occur before 37 weeks of gestation. This rate has remained frustratingly stable for years, despite sustained public health attention. Preterm birth is the leading cause of infant death and the primary driver of neonatal intensive care unit (NICU) admissions.
Contributing factors to the persistent preterm rate include: continued high rates of multiple gestation births (linked to fertility treatment), rising maternal obesity rates, high rates of chronic conditions including hypertension and diabetes in the reproductive-age population, structural disparities in prenatal care access (particularly for Black women, who face dramatically higher preterm rates), and the limited efficacy of available pharmacological interventions for preventing spontaneous preterm birth.
The Global Context — America's Birth Rate in a Worldwide Demographic Transition
The U.S. decline in fertility rate — GFR of 53.8 in 2024, corresponding to a total fertility rate (TFR) of approximately 1.7 children per woman — sits below the replacement rate of 2.1 that demographers consider necessary to maintain population size without immigration. This places the United States alongside most high-income nations in a below-replacement fertility pattern.
However, the U.S. TFR remains somewhat higher than many peer nations — Germany (approximately 1.4), Japan (approximately 1.2), South Korea (approximately 0.7), and most Southern and Eastern European countries — largely because of higher birth rates among Hispanic and younger immigrant communities. Immigration continues to be the primary driver of U.S. population growth in a below-replacement fertility environment, a demographic reality with significant political and policy implications.
Frequently Asked Questions
Did the U.S. birth rate go up or down in 2024?
Both measures moved in different directions. Total births increased 1%, reaching 3,628,934. But the general fertility rate (GFR) — which controls for population growth — declined 1%, from 54.5 to 53.8 births per 1,000 women aged 15–44. The increase in raw births reflects population growth, not increased fertility.
Why did the provisional data show a different result from the final data?
The April 2025 provisional data showed a 1% GFR increase; the July 2025 final data shows a 1% decrease. This difference resulted from using updated Census population estimates as the denominator. The total birth numbers are similar; the population size used to calculate the rate was revised.
Are teen birth rates still declining?
Yes — significantly. The 2024 teen birth rate of 12.7 per 1,000 women ages 15–19 is a record low, down 3% from 2023 and more than 70% below the 1991 peak. This is one of the most sustained positive trends in modern U.S. public health.
What is the preterm birth rate in 2024?
10.41% — unchanged from 2023. Approximately 1 in 10 U.S. births continues to occur prematurely, with preterm birth remaining the leading cause of infant death and the primary driver of neonatal intensive care admissions.
Why is the C-section rate still rising?
Multiple factors drive the rise: increased maternal age at birth, higher obesity rates, more multiple gestation pregnancies, provider practice patterns, and demand-side factors. The 22.9% primary C-section rate in 2024 exceeds WHO recommendations that C-sections not exceed 10–15% of all births at the population level.
