Boys' Names Barely Moved for Eighty Years, Then Broke
From 1880 to 1930 the US boys' top ten changed by 0 to 1 names a decade. Since 2000 it changes by 7. Girls' names always moved faster, and still do.
The US boys' top-ten name list changed by only 0 to 1 names per decade between 1880 and 1930, but changed by 7 of 10 in both the 2000s and the 2010s, while girls' names have churned faster than boys' in almost every decade on record.
The US Social Security top-ten lists run from 1880 to 2025 — 146 consecutive years. Count how many names are new each decade and one pattern dominates everything else.
New entries to the top ten, per decade
| Decade | Boys | Girls |
|---|---|---|
| 1880→1890 | 1 | 3 |
| 1890→1900 | 1 | 4 |
| 1900→1910 | 0 | 3 |
| 1910→1920 | 1 | 2 |
| 1920→1930 | 1 | 5 |
| 1930→1940 | 3 | 6 |
| 1940→1950 | 2 | 3 |
| 1950→1960 | 2 | 5 |
| 1960→1970 | 2 | 8 |
| 1970→1980 | 4 | 6 |
| 1980→1990 | 3 | 5 |
| 1990→2000 | 3 | 5 |
| 2000→2010 | 7 | 8 |
| 2010→2020 | 7 | 4 |
For fifty years the boys' list was effectively frozen. Across the whole 1900s decade, not a single new name entered the top ten. A father and son born thirty years apart would have shared most of their classmates' names.
Since 2000 the same list turns over by seven names a decade.
Girls' names always moved faster
In almost every decade on this table the girls' column is higher. In the 1960s, eight of the ten girls' names were new; the boys' column that decade reads 2.
This is one of the most stable findings in naming data and it long predates any modern explanation. Whatever drives it was already operating in 1890.
The convergence is recent. In the 2010s the boys' column finally overtook the girls' — 7 against 4 — for the first time in the series.
The names that outlasted everything
| Name | Years inside a top ten |
|---|---|
| James | 125 of 146 |
| William | 118 |
| John | 108 |
| Robert | 108 |
| Mary | 92 |
| Charles | 75 |
James has been in a US top ten for 125 of the 146 years recorded. That is a name doing something structurally different from Jase or Sheena, which put a fifth and a sixth of their entire histories into a single year.
By comparison the current leaders look brief: Liam has held first place for nine consecutive years, Olivia for seven. Both are long runs by modern standards and short ones by the standards of the first half of this series.
One country, and it matters here
This is US Social Security data only — the reason the analysis is possible at all is that almost no other country publishes an unbroken 146-year name series.
That also means none of the above transfers. British, Pakistani, Nigerian and Japanese naming move on their own patterns, and this site does not publish figures for them because the figures do not exist in comparable form.
See the individual-name version of this measure at which names date you, or what the newest cohort's names have in common at Gen Beta baby names.