The Single-Parent Generation: Why Millennials Raise Kids Alone, and What Dating Costs Them

The United States leads the world in children living with one parent. The generation raising most of them never filed for divorce, and the ones trying to date again are paying by the hour.

Almost a quarter of American children live with one parent and no other adult in the house. Pew Research Center compared 130 countries and territories and found nobody else close: 23 percent of U.S. kids live in single-parent households, more than triple the world average of 7 percent. The generation doing most of today’s parenting arrived there by a route its grandparents would not recognize. Among millennial parents tracked by federal panel data at ages 28 to 34, 55 percent had their first child before marriage. When the youngest Baby Boomers passed through those same ages, the figure was about one in four.

Two questions turn out to share one answer. Why are so many millennials raising kids alone? And why is dating, once you are one of them, so hard? The answer to both is arithmetic. Marriage became a capstone purchase, childcare became a second rent, and the hours in a single parent’s week never grew to match either bill.

The numbers, minus the myth

The scale first. The Census Bureau counted 10.9 million one-parent family groups with a child under 18 in 2022, and mothers headed 80 percent of them. In the bureau’s last deep report on children’s living arrangements, 70.1 percent of kids lived with two parents, 21.4 percent with their mother only, and 4.4 percent with their father only. And American single parents carry the load with less help than almost anyone on earth: Pew found just 8 percent of U.S. children live with extended relatives such as grandparents, against 38 percent globally. Alone here means alone.

New Hampshire sits better than the country, though not by as much as Granite Staters assume. The 2025 KIDS COUNT Data Book puts 27 percent of New Hampshire children in single-parent families, against 34 percent nationally. That measure counts kids whose parents are not married to each other, including couples living together unmarried, so read it as a marriage gauge as much as a solo-parent count. New Futures, the state’s KIDS COUNT affiliate, counts more than 64,000 New Hampshire children in single-parent households, where the poverty rate has climbed to 21 percent.

Now the myth. “The single parents generation” gets said as if millennials invented the category, or as if the numbers are still exploding. Neither holds. The share of U.S. births to unmarried women peaked in 2009, at 41.0 percent, when the oldest millennials were 28 and the youngest were 13. In 2023 it was 40.0 percent. Flat for roughly fifteen years. Zoom in tighter and the line bends down: the Census Bureau reported in January that the share of women with a recent birth who were unmarried fell from 35.7 percent in 2011 to 30.9 percent in 2023. The unmarried-parenthood surge was a Boomer-and-Gen-X-era construction project. Millennials, the cohort born between 1981 and 1996 under Pew’s definition, moved in at the high-water mark and have held the level rather than raised it.

What this generation changed is the front door.

Divorce didn’t build this

The stock image of a single parent is a divorced one. The data retired that image years ago. Among mothers heading one-parent families in 2022, 51 percent had never married; 29 percent were divorced. Most of this generation’s single parents did not lose a marriage. They never had one.

Marriage itself moved out of the years when people have children. The median age at first marriage reached 30.8 for men and 28.4 for women in 2025, up from 23.5 and 21.1 in 1975. Fewer than half of U.S. households, 47 percent, are married couples now; fifty years ago it was two-thirds. The 55 percent figure above comes from an Institute for Family Studies and American Enterprise Institute analysis of Americans born from 1980 to 1984, the generation’s leading edge, and every marker since points the same direction.

The retreat from marriage did not happen evenly. It happened by class. Census research released in November tracks women’s living arrangements at first birth across three decades. First-time mothers holding a bachelor’s degree got more married, from 74.4 percent in the early 1990s to 84.5 percent in the early 2020s. First-time mothers without one went the other way, from 58.6 percent married down to 40.6 percent, while their share living with an unmarried partner jumped from 19.2 to 34.8 percent. The bureau’s own write-up called it “a growing divide in family stability.” A diploma now predicts a wedding before a crib better than nearly anything else about a person.

Here is the part most coverage misses: fewer women now give birth with no partner at all. The share of first-time mothers who were neither married nor living with a partner fell from roughly 20 percent in the early 1990s to about 15 percent in the early 2020s. Cohabitation absorbed the difference from both sides. About a quarter of first-time mothers now live with an unmarried partner at the birth. Those households look like two-parent families on day one. They just do not last like them. The Fragile Families and Child Wellbeing Study, which followed thousands of births in large cities, found nearly half of parents who were cohabiting at a child’s birth split within five years, against roughly 20 percent of married parents. That churn, not divorce court, is the machine that manufactures this generation’s single parents. A couple moves in and has a baby; by kindergarten they have separated, and the census finds a single-parent household no divorce record ever touched.

Why did the non-degree half stop marrying first? Look at what marriage now demands as an entry fee. Two generations back, you married and then built. The norm now runs the other way: the wedding waits for the stable job, the paid-down debt, the house. In a state that needs roughly 60,000 more homes, a question GSR examined in The 60,000-Home Question, that foundation gets more expensive every year, so the wedding keeps sliding right. Children do not wait the way weddings do.

The dating math

Start with the general market, which is rough for everyone. In Pew Research Center’s national dating study, three-quarters of people looking for a partner said it had been hard to find anyone to date in the past year. A third blamed being too busy. Thirty-seven percent blamed a thin local pool, a complaint that lands twice as hard north of Concord. Two-thirds of daters said their dating life was going badly. Half of all single adults were not looking at all, and by 2022 the share who were looking had slipped to 42 percent, from 49 three years earlier.

Now add a kid. Every obstacle on Pew’s list compounds. “Too busy” stops being a mood and becomes a custody calendar. The thin pool thins again, because some share of the people in it filter out parents on sight. And a cost appears that childless daters never price: the meter starts running the moment you leave the house. Care.com’s posted national babysitter average runs $19.81 an hour. Call it $20. A dinner date, with the drive, is a four-hour job. That is $80 in sitter pay before anyone pours water. Two dates a month is $160, a car payment, spent on the possibility of a second date.

New Hampshire makes the meter run faster. The state’s licensed childcare supply shrank 14 percent between 2017 and 2025 while the average price of center-based infant care reached $16,462 a year, per the New Hampshire Fiscal Policy Institute. The scarcity that jams the Monday-through-Friday market drains the Saturday-night one too, since the sitter pool is the childcare workforce’s back bench. NHFPI’s analyst put the household effect plainly: “many families are forced to make difficult decisions about work, finances, and care options.” A night out is the first decision to lose.

The money lands on the people holding the least of it. New Futures reports the average New Hampshire two-parent household earned $43,665 more in 2023 than it did in 2017; single-mother households gained $17,482 over the same stretch. Only 31 percent of Granite State households headed by an unmarried woman receive child support. The group with the slowest income growth and the thinnest backup is the group being charged a cover just to enter the market.

Then there is the part no spreadsheet holds. A single parent cannot date the way the apps assume. Spontaneity requires coverage. A stranger has to be vetted twice, once as a date and once as a person who might someday stand in your kitchen. Introductions to the kids get sequenced like a security clearance, because the Fragile Families numbers above are exactly what a careful parent is trying not to repeat. The market rewards availability and punishes caution, and single parents can offer only the second.

Why the state should care

This looks like a lifestyle story. It is an economics story wearing one. Nationally, 28 percent of single-parent families lived below the poverty line in 2022, against 6 percent of married couples with children. New Hampshire’s single-parent-household poverty rate is 21 percent. For an unmarried Granite State mother earning the median of roughly $52,000, NHFPI’s analysis found full-price center care for an infant and a toddler would consume 61 percent of income. Re-partnering has long been one of the few reliable exits from single-parent poverty, and the state has priced the on-ramp, an ordinary night out, as a luxury good.

The fixes are not mysterious, and none of them involve romance. More childcare supply cuts the hourly cost of a Saturday night along with the weekday bill. More housing supply lowers the entry fee on the stability that makes marriage feel possible before 35. Child-support enforcement that reaches more than 31 percent of the households owed it puts money where a dating budget currently comes from. Granite State households are already absorbing thousands of dollars in new annual costs, as GSR reported in Granite State Households Face $7,500 Rise in 2026 Costs. None of this bends until somebody in Concord treats family formation as infrastructure instead of sentiment.

The country did not vote for a single-parent generation. It priced its way into one, and the bill shows up on a Friday night: twenty dollars an hour, due before dinner.

— Dexter Dow, Granite State Report

Fact check

#	Claim	Status	Source
1	23% of U.S. children live with one parent and no other adults, vs. a 7% world average; 8% live with extended relatives vs. 38% globally	VERIFIED	Pew Research Center, Dec. 12, 2019 (130-country study)
2	55% of millennial parents ages 28–34 (born 1980–84, NLSY97) had their first child before marriage; about 25% for the youngest Boomers at the same ages	VERIFIED	Institute for Family Studies / American Enterprise Institute, “The Millennial Success Sequence” (Wang & Wilcox, 2017)
3	10.9 million one-parent family groups with a child under 18 in 2022; 80% maintained by mothers; single mothers 51% never married vs. 29% divorced	VERIFIED	U.S. Census Bureau, America’s Families and Living Arrangements, Nov. 17, 2022 release
4	70.1% of children lived with two parents, 21.4% mother only, 4.4% father only (2019)	VERIFIED	U.S. Census Bureau, “Living Arrangements of Children: 2019,” Feb. 3, 2022 release
5	Births to unmarried women: 40.0% of all 2023 births; series peak 41.0% in 2009	VERIFIED	CDC/NCHS, Births: Final Data for 2023, NVSR Vol. 74 No. 1
6	Unmarried share of women with a recent birth fell from 35.7% (2011) to 30.9% (2023)	VERIFIED	U.S. Census Bureau, Jan. 28, 2026 release (2023 ACS report)
7	Median age at first marriage 30.8 (men) / 28.4 (women) in 2025, up from 23.5 / 21.1 in 1975; 47% of households are married couples vs. 66% in 1975	VERIFIED	U.S. Census Bureau, America’s Families and Living Arrangements, Dec. 2, 2025 release
8	First-time mothers with a bachelor’s: married at first birth 74.4% → 84.5% (early 1990s → early 2020s); without: 58.6% → 40.6% married, 19.2% → 34.8% cohabiting; overall cohabiting share ~17% → ~24%; neither-married-nor-partnered ~20% → ~15%	VERIFIED	U.S. Census Bureau, P20-589 and Nov. 19, 2025 release; Census America Counts, Dec. 2025
9	Nearly half of parents cohabiting at a child’s birth split within five years, vs. about 20% of married parents	ATTRIBUTED	Fragile Families and Child Wellbeing Study, as cited by the Institute for Family Studies
10	27% of NH children live in single-parent families vs. 34% nationally (measure includes cohabiting unmarried parents)	ATTRIBUTED	Annie E. Casey Foundation, 2025 KIDS COUNT Data Book (2023 data); definition per AECF
11	More than 64,000 NH children live in single-parent households; poverty rate in those households 21%	VERIFIED	New Futures, NH KIDS COUNT, Family & Community
12	28% of single-parent families below poverty vs. 6% of married couples with children (2022)	VERIFIED	Annie E. Casey Foundation, 2024 KIDS COUNT Data Book
13	NH average center-based infant care $16,462/year (2025); infant + 4-year-old about $30,000, up from about $22,500 in 2017; licensed providers down 120 (14%) since 2017	VERIFIED	New Hampshire Fiscal Policy Institute, June 2026 analysis of 2025 Child Care Aware of America and NH DHHS data
14	Full-price center care for an infant and toddler would consume 61% of the median income (about $52,000) of a single or unmarried NH mother	ATTRIBUTED	NHFPI analysis as published in the Valley News, June 20, 2026
15	Posted national babysitter average $19.81/hour	VERIFIED	Care.com posted-rate data, Feb. 2026; Care.com 2026 Cost of Care Report
16	75% of daters found it hard to find people to date; 34% too busy; 37% limited local pool; 67% said dating going badly; half of singles not looking; looking share 49% (2019) → 42% (2022)	VERIFIED	Pew Research Center, Aug. 20, 2020 study and Feb. 8, 2023 update
17	NH two-parent household income rose $43,665 (2017–2023) vs. $17,482 for single-mother households; 31% of households headed by an unmarried woman receive child support	VERIFIED	New Futures, NH KIDS COUNT, Economic Well-Being
18	Millennials defined as those born 1981–1996	ATTRIBUTED	Pew Research Center generational definition

Editor’s note. Every factual claim above was verified against the sources named in the fact-check table before publication. National figures use the most recent federal releases available as of August 29, 2026; New Hampshire figures come from the state’s KIDS COUNT affiliate and the New Hampshire Fiscal Policy Institute. The KIDS COUNT “single-parent families” measure includes children of unmarried cohabiting parents, as noted in the text. Corrections: Granite State Report corrects verified errors promptly and appends a note identifying what changed and when.