Kaydyn
About 574 American babies have been named Kaydyn since 2000, most of them around 2009. It is given to both boys and girls. In 2025 it ranked 8,243rd. About 570 Kaydyns are alive in the United States today, and half of them are over 13.
Popularity, 1880–2025
girls named Kaydyn boys named Kaydyn
Girls and boys called Kaydyn
years more girls than boys years more boys than girls
Kaydyn crossed from girls to boys in 2012, and has stayed there for 6 of the years counted since. At its furthest it was 75% boys, and in 2017 it was 61%.
The girls’ share of each year’s babies of the name, in the 11 years in which at least 25 babies got it. The line touches the middle more often than there are crossings marked: a year or two on the other side is not a name changing hands, and only a move that holds for 5 counted years and reaches 60/40 is recorded as one. All 581 names that changed sex.
By the numbers
- Total US births
- 574
- Estimated living today
- 570
- Median age today
- 13
- Peak year
- 2009
- Best rank
- 3,639th
- Rank in 2025
- 8,243rd
- First recorded
- 2000
- Girls / boys
- 228 / 346
How old the living Kaydyns are
born that year still alive today
Of the 574 babies given the name since 2000, about 570 are alive — 99 in every hundred. The dotted line is the median: half were born before 2012 and half after.
An estimate, not a count. SSA births aged forward through SSA cohort life tables, which know nothing about who left the country or arrived in it — so for a name that mostly came to America rather than being born in it, this is a floor rather than a figure. Where you fall among living Americans.
Where Kaydyn is most common
Total births recorded in each state since 1910. Browse names by state.
Names of 2009
The most popular boys’ names the year Kaydyn peaked:
Related names
Kaydyn against another name
Two names on one chart, with the year one overtook the other.
Try it on yourself
Source: US Social Security Administration, national and state baby-name files, 1880–2025. Counts include only births registered with the SSA, and names with fewer than five births in a year are not published. The living estimate applies SSA cohort life tables to those births; it counts people born in the United States, so it misses anyone who arrived later and anyone who has left.