With regards to delaying motherhood to pursue careers and different life aspirations, Bay Space girls are main the nation.
This area is residence to the best share of girls having youngsters at 40 and older — a development that consultants chalk as much as a mixture of financial alternative, progressive social norms and entry to reproductive know-how.
Three of the 5 U.S. counties with the best proportion of girls having youngsters of their 40s are in Northern California, in response to knowledge not too long ago launched from the Facilities for Illness Management and Prevention and reported first by the San Francisco Chronicle.
On the high of the checklist is Marin County, the place 11.4% of girls who gave start in 2023 have been at the very least 40 years previous. San Francisco got here in second place with 10.9%, whereas San Mateo County ranked fifth with 8.7%.
Los Angeles landed in fifteenth place at 7.3%. The checklist contains all counties in america with at the very least 100,000 residents.
Dr. Mary Hinckley, IVF medical director on the Reproductive Science Heart of the Bay Space, stated she was not stunned to see the area main the development of older pregnancies since many girls there prioritize careers and different life experiences forward of beginning a household.
The Bay Space embraces fashionable types of household buildings that will or could not embrace youngsters and, normally, largely doesn’t foster a tradition the place girls really feel conventional societal pressures to begin a household younger, she stated. Round half of her sufferers on the fertility clinic are at the very least 38 years previous.
“I believe there’s an entrepreneurial spirit for girls out right here of simply taking cost of their lives, advancing their careers, pursuing extra education, extra life experiences and that causes them to get right here later,” she stated. “I discover so many sufferers who come to me having hiked Mount Kilimanjaro, surfed in Costa Rica, began a enterprise, switched jobs and now they’re able to have youngsters.”
The typical age of a lady giving start in San Francisco and Marin counties is 33.6 years and 33.5 years, respectively. Nationally, the typical age is 29.6 and in L.A. County it’s 31.2.
The proportion of American girls giving start at 40 and older has risen considerably within the final three many years — from 1.3% in 1990 to 4.1% in 2023, in response to the CDC.

Dr. Mary Hinckley, an professional in reproductive endocrinology on the Reproductive Science Heart of the Bay Space, appears to be like at an ultrasound on Might 1, 2025. Hinckley stated that round half her shoppers on the fertility clinic are age 38 and older.
(Reproductive Science Heart of the Bay Space)
Hinckley stated many Bay Space girls could really feel extra assured delaying motherhood as a result of the area has a number of the finest fertility clinics within the nation, giving girls a greater likelihood of getting a profitable being pregnant at a later age. Clinics can decrease the chance of miscarriages amongst girls age 40 from 50% to 10% by conducting genetic checks on embryos created with in vitro fertilization earlier than they’re implanted, she stated.
Employers have in all probability additionally performed a task in serving to girls grow to be new moms later than previous generations.
Bay Space corporations supply a number of the finest protection within the nation for egg freezing and fertility remedy as an incentive to recruit proficient younger staff, Hinckley stated.
“How do you get these younger, good folks to be keen to present away their 20s and even 30s to work all the best way into midnight?” she stated. “Nicely, you do this by promising an avenue to have the ability to protect their fertility in order that they will nonetheless have youngsters.”
Different counties that ranked within the high 10 for share of births amongst girls 40 and older have been within the metro areas of Washington, D.C., and New York Metropolis — each hubs for profitable and demanding careers.
Girls are additionally acutely conscious that their financial institution accounts are going to take a success when their little bundle of pleasure arrives.
In California, the typical price of kid look after one toddler is $21,945, which takes up 18.4% of a median household’s earnings, in response to an evaluation of federal knowledge by the Financial Coverage Institute. New mother and father additionally shell out for medical prices, diapers, clothes and feeding provides.
A middle-income household with two youngsters may count on to spend greater than $310,000, adjusted for increased future inflation, to lift one little one born in 2015 by means of age 17, in response to a 2022 evaluation from the Brookings Establishment.
Elizabeth Gregory, director of girls’s gender and sexuality research on the College of Houston, interviewed greater than 100 girls about their option to delay having youngsters for a e-book on later motherhood. Probably the most frequent causes cited was a want for higher financial stability and little one care.
“It’s not simply that they wish to have a profession, which is a part of the story, but additionally they need their profession so that they’re incomes sufficient to help their youngsters,” Gregory stated. “They simply don’t wish to be in poverty, which is the place lots of younger moms stay.”
A research on the College of Virginia discovered that for every year a lady waits to begin a household, her lifetime earnings improve by 3%.
In Marin and San Francisco counties, the median annual earnings for a lady with a full-time job is over $100,000 — almost double the nationwide median earnings for a similar group at $55,240, in response to an evaluation of U.S. census knowledge by Neilsberg Analysis.
These increased wages additionally make it simpler for girls to afford reproductive know-how comparable to egg freezing and IVF, which might be crucial as fertility declines of their mid to late 30s and 40s.
Later pregnancies have a better threat of problems comparable to miscarriage, hypertension and chromosomal abnormalities comparable to Down syndrome. Nevertheless, fashionable reproductive know-how can mitigate a few of these dangers.
Along with financial achieve, many girls delay motherhood to make the most of the comparatively new alternative to exert their voice within the office.
“There’s a complete dynamic round girls needing to get into positions the place they are often heard,” Gregory stated. “I believe they perceive that with the intention to, as an example, get to a world wherein little one care may be inexpensive, we have to have extra girls’s voices in policymaking roles.”