Baby Names US
girls' name ★ peaked 2011

Kailyn

Gender Girl · 1% boys Rank 2025 #1,825 Trend ↓ Falling 41%
Rank 2025
#1,825
among girls · ↓245 vs 2024
Babies in 2025
118
named Kailyn · -21% vs 2024
How common
1 in 14,612
girls born in 2025
Peak year
2011
799 babies
All-time total
14,351
#1,329 all-time among girls
First recorded
1981
in Social Security records

Kailyn popularity over time

14,351 babies have been named Kailyn since 1981, according to official Social Security records. Switch measure to see births per year or the yearly rank.

Measure
Births per 1,000 babies of that sex, comparable across eras
0.130.250.380.518801900192019401960198020002020GirlsBoys
GirlsBoys

By decade. Change compares yearly averages, so the current partial decade is on equal footing. Best rank is the name's best yearly rank within the decade.

Decade Girls Boys Total Per year Change Best rank
1880s – – – – – –
1890s – – – – – –
1900s – – – – – –
1910s – – – – – –
1920s – – – – – –
1930s – – – – – –
1940s – – – – – –
1950s – – – – – –
1960s – – – – – –
1970s – – – – – –
1980s 349 – 349 35 – #1,436
1990s 2,422 7 2,429 243 +596% #619
2000s 5,584 25 5,609 561 +131% #447
2010s 4,927 53 4,980 498 -11% #397
2020s (to 2025) 929 55 984 164 -67% #1,196

Where Kailyn is heading

A five-year projection from the recent trend in births per 1,000 girls (damped so it flattens over time), converted to babies at today's birth totals. The implied rank places that projection in the 2025 field. A projection, not a promise: real trends bend.

Year Projected babies Per 1,000 girls Implied rank
2026 100 0.06 outside top 500
2027 92 0.06 outside top 500
2028 86 0.05 outside top 500
2029 81 0.05 outside top 500
2030 77 0.05 outside top 500

Where Kailyn is most popular

Girls named Kailyn per 1,000 girls born in each state, 2021–2025. National average: 0.091 per 1,000. Strongest in South Carolina, Georgia, and North Carolina.

Vs national average
well below below near national above well above no data

All 50 states and DC, sorted by rate. Counts are girls named Kailyn born 2021–2025; the per-1,000 rate makes states of different sizes comparable, and the last column shows each state against the national average.

State Girls 2021–2025 Per 1,000 vs national
South Carolina 24 0.267 +194%
Georgia 45 0.198 +118%
North Carolina 39 0.171 +89%
Virginia 27 0.158 +75%
Florida 56 0.131 +44%
Alabama 12 0.128 +41%
New Jersey 22 0.122 +34%
Texas 96 0.119 +32%
Mississippi 5 0.107 +18%
Arkansas 5 0.095 ≈ national
California 73 0.087 ≈ national
Arizona 11 0.078 -14%
Louisiana 6 0.069 -24%
New York 27 0.068 -25%
Missouri 6 0.050 -45%
Wisconsin 5 0.049 -46%
Illinois 11 0.048 -47%
Michigan 7 0.038 -58%
Tennessee 6 0.038 -58%
Pennsylvania 6 0.025 -72%
Ohio 6 0.025 -72%
Alaska – – –
Colorado – – –
Connecticut – – –
District of Columbia – – –
Delaware – – –
Hawaii – – –
Iowa – – –
Idaho – – –
Indiana – – –
Kansas – – –
Kentucky – – –
Massachusetts – – –
Maryland – – –
Maine – – –
Minnesota – – –
Montana – – –
North Dakota – – –
Nebraska – – –
New Hampshire – – –
New Mexico – – –
Nevada – – –
Oklahoma – – –
Oregon – – –
Rhode Island – – –
South Dakota – – –
Utah – – –
Vermont – – –
Washington – – –
West Virginia – – –
Wyoming – – –

State counts come from the Social Security Administration's state files, which omit any state-year with fewer than five babies of a name, so small states can undercount slightly.

The story of Kailyn

Kailyn is rare for girls in the United States, ranked #1,825 in 2025 with 110 babies given the name. It is currently declining compared with a decade ago.

Since 1981, 14,351 American babies have been named Kailyn. Its peak came in 2011, when 799 newborns received the name, the signature sound of the 2010s.

The chart above shows the full history: the popularity view (births per 1,000 babies) is the honest comparison across generations, since total US births have changed enormously since 1880. Switch to the rank view to see where Kailyn stood among all girls' names in any year, or use the compare tool to plot it against other names.

How old are people named Kailyn?

The median living Kailyn is about 17 years old; half are between 12 and 24. An estimated 14 thousand people named Kailyn are alive in the United States today.

median 17 020406080100

Estimated from births per year and Social Security period life tables; an approximation of the living age distribution, by age in years.

Kailyn year by year

Every year since 2001, and five-year steps back to 1880. Rank is within each sex.

Year Girls Girls rank Boys Boys rank
2025 110 #1,825 8 #9,293
2024 133 #1,580 16 #5,775
2023 155 #1,443 10 #7,985
2022 158 #1,425 14 #6,313
2021 180 #1,282 7 #10,245
2020 193 #1,196 – –
2019 247 #1,038 8 #9,300
2018 264 #992 – –
2017 298 #899 – –
2016 355 #803 – –
2015 436 #659 5 #13,039
2014 606 #512 7 #10,175
2013 609 #492 6 #11,443
2012 623 #493 6 #11,523
2011 793 #397 6 #11,555
2010 696 #443 15 #5,886
2009 706 #447 – –
2008 706 #447 7 #10,458
2007 663 #491 5 #13,380
2006 626 #493 6 #11,337
2005 583 #511 – –
2004 533 #533 – –
2003 499 #554 – –
2002 438 #589 – –
2001 399 #627 – –
2000 431 #593 7 #8,665
1995 246 #807 – –
1990 93 #1,610 – –
1985 29 #3,119 – –
1980 – – – –
1975 – – – –
1970 – – – –
1965 – – – –
1960 – – – –
1955 – – – –
1950 – – – –
1945 – – – –
1940 – – – –
1935 – – – –
1930 – – – –
1925 – – – –
1920 – – – –
1915 – – – –
1910 – – – –
1905 – – – –
1900 – – – –
1895 – – – –
1890 – – – –
1885 – – – –
1880 – – – –

Frequently asked questions

Quick answers about Kailyn, drawn from the same Social Security data as the charts above.

How old is the average Kailyn?

The median living Kailyn is about 17 years old. Half of all living Kailyns are between 12 and 24 years old.

How many people named Kailyn are alive today?

An estimated 14 thousand people named Kailyn are alive in the United States, based on 14,351 recorded births and Social Security life tables.

How popular is the name Kailyn in 2025?

Kailyn ranked #1,825 among girls' names in the United States in 2025, with 110 babies given the name, according to Social Security Administration data.

How many people are named Kailyn?

14,351 babies have been named Kailyn in the United States since 1981, based on Social Security card applications.

When was the name Kailyn most popular?

Kailyn peaked in 2011, when 799 newborns received the name.

Is Kailyn a boy or girl name?

Kailyn is overwhelmingly a girl's name: 99% of babies with the name.

Is the name Kailyn rising or falling?

Kailyn is declining, less popular now than a decade ago.

Will Kailyn become more popular?

Kailyn is trending downward. If the recent trend holds, we project roughly 77 girls named Kailyn in 2030, which would rank outside the top 500. Forecasts assume the current trend continues and become less certain further out.

Names like Kailyn

Names that sound and feel close to Kailyn: shared sounds, similar era, similar popularity. Each links to its full history.

Compare Kailyn with similar names → More names starting with K →