NameYear

The Names That Date You (and the Ones That Never Do)

· NameYear · Data: U.S. Social Security Administration baby names through 2025

Some first names work like a birth certificate. Meet a Brittany in the United States and you can make a good guess at their age: 86.9% of all the Brittanys born since 1925 arrived in just fifteen years, 1985 to 1999. Other names tell you almost nothing. Only 21.2% of the 1,398,405 Elizabeths share their busiest fifteen-year stretch.

We measured this for every name given to at least 100,000 American babies from 1925 to 2025, using the Social Security Administration’s baby-name files. For each name we slid a fifteen-year window across the decades and kept the window with the most births. The higher that share, the more a name “dates” the person who carries it.

The most dated names

These are the names most packed into a single fifteen-year window. We left out names whose window runs into the last ten years: a name that is still climbing looks concentrated only because its story isn’t finished.

NameBusiest 15 yearsShare of all bearers born thenBirths since 1925
Brittany1985–199986.9%361,751
Debbie1953–196782.8%187,976
Debra1951–196581.8%551,770
Aidan1999–201378.1%121,158
Tammy1959–197377.8%333,407
Kim1954–196875.4%214,689
Chelsea1984–199873.5%163,268
Deborah1950–196473.3%742,785
Jeff1956–197073.2%116,049
Kelsey1987–200173%155,574
Makayla1998–201272%108,183
Brandy1973–198770.9%108,861
Vickie1950–196470.2%110,229
Lori1958–197270%342,758
Cathy1950–196469.9%170,595
Whitney1983–199769.7%102,983
Haley1991–200569.3%160,100
Destiny1995–200969.2%152,289
Gavin2001–201569%189,554
Kathy1950–196468.9%334,746
Births per year of Brittany, Debbie, Debra, scaled to each name's peak

Each line is scaled to its own busiest year, so only the shape counts: how fast a name arrived and how fast it left.

The pattern is the same almost every time: a name climbs for a decade, peaks, and falls nearly as fast. Parents in the same years read the same magazines and watch the same shows, and a name that sounds fresh to one cohort of parents sounds like their classmates to the next. That is what makes the decline so steep.

The names that never give you away

At the other end are names that have been given steadily for ninety years. Many are classics that never needed a revival; others moved from one community to another as the country changed, so their births spread across generations.

NameBusiest 15 yearsShare born thenBirths since 1925
Nina1996–201017.4%110,136
Joseph1951–196519.9%2,280,322
Victor1990–200420.8%297,875
Edwin1925–193920.8%195,568
Maurice1970–198420.8%113,973
Manuel1992–200621%173,101
Elizabeth1979–199321.2%1,398,405
Vincent1956–197021.3%329,316
Calvin1947–196121.8%201,870
Ruben1989–200322.6%112,222
Rosa1947–196122.7%128,586
Priscilla1939–195322.7%113,962

If births were spread perfectly evenly over the 101 years, any fifteen-year window would hold about 14.9% of them. The names above come close to that.

How this shapes the game

Dated names are the backbone of NameYear’s daily puzzle. A roster of six names that all peaked in the same few years points to one birth year; mix in a timeless name and it adds almost no information. The puzzle generator scores each roster this way before it is used, which is why the most era-bound names show up again and again in the early rounds. You can read more in how the puzzle works.

Method: births of both sexes combined, 1925–2025, names with 100,000+ births in that span. Source: U.S. Social Security Administration national baby-name files (names given to at least five babies of one sex in a year).

More stories