Kiley
The girl's name Kiley has been in the national records since 1958, with 20,272 births to its name. In 2025 it ranked 2,778th. About 20,000 Kileys are alive in the United States today, and half of them are over 22.
Popularity, 1880–2025
girls named Kiley boys named Kiley
Girls and boys called Kiley
years more girls than boys years more boys than girls
Kiley crossed from boys to girls in 1976, and has stayed there for 50 of the years counted since. At its furthest it was 100% girls, which is roughly where it still is.
The girls’ share of each year’s babies of the name, in the 56 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
- 20,272
- Estimated living today
- 20,000
- Median age today
- 22
- Peak year
- 2008
- Best rank
- 307th
- Rank in 2025
- 2,778th
- First recorded
- 1958
- Girls / boys
- 19,175 / 1,097
How old the living Kileys are
born that year still alive today
Of the 20,272 babies given the name since 1958, about 20,000 are alive — 98 in every hundred. Roughly 6,500 of them are children and 4 are 65 or over. The dotted line is the median: half were born before 2003 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 the name comes from
Origin a surname
Etymology from Wiktionary, used under CC BY-SA 4.0.
Where Kiley is most common
Relative to how many babies each state records, Kiley is most concentrated in Nebraska (2.3×), Utah (2.0×), Iowa (1.6×), Arizona (1.6×).
Total births recorded in each state since 1910. Browse names by state.
Names of 2008
The most popular girls’ names the year Kiley peaked:
Related names
Kiley 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.