Kaithlyn
#14,010 in 2025Girls' nameMeaning not yet documented
Kaithlyn has been given to 389 babies in the U.S. since 1985. In 2025 it ranked #14,010 of 17,293 girls’ names in use. Its peak year was 2002, with 21 recorded.
Babies named Kaithlyn, 2025
1 in 553,000
Kaithlyn over time, 1880–2025
Based on births in the U.S. Babies given the name each year. Hover the chart — or focus it and use the arrow keys — for any year. Gaps mean the name was given fewer than 5 times that year; these counts are unpublished.
How common is Kaithlyn?
Everything below is computed from the 2025 data — the most recent year available.
- Among all babies, 2025
- 1 in 553,000
- 6 of 3,315,165 births
- Among girls only
- 1 in 268,000
- <0.01% of girls
- Rank, 2025
- #14,010
- of 17,293 girls’ names in use
- Coin-flip room size
- 382,984 kids
- Even odds of a second one
Where Kaithlyn sits on the popularity scale
Chance at least one other child shares the name
If the other children were drawn at random from the 2025 national name distribution. Real classrooms cluster by region and community, so treat these as a floor, not a ceiling.
Put another way: gather 382,984 children born in 2025 and it's an even bet that one of them is another Kaithlyn. In a class of 30 the chance is Under 1%.
When Kaithlyns were born
Half of everyone ever recorded as Kaithlyn was born before 2006 — so the typical Kaithlyn is around 19 today.
- Biggest decade
- 2000s
- 43.7% of all use
- Born in the last 25 years
- 76.6%
- A modern name
- Recorded since 1950
- 389
- People you could plausibly meet
2000s — 43.7% of all recorded uses (170).
Is Kaithlyn rising or falling?
Rank movement and count movement can disagree — the number of distinct names in use keeps growing, so a name holding a steady count still slides down the list. Both are shown.
- Rank vs 1 year ago
- −1,250
- Places dropped
- Rank vs 5 years ago
- +226
- Places climbed
- Rank vs 10 years ago
- −4,231
- Places dropped
- Births vs 10 years ago
- 0.55×
- Fewer babies than then
- Share of its own peak
- 28.6%
- Peak was 2002 (21)
- Years since peak
- 23
- Years
- Year-to-year steadiness
- Shifting
- 18.6% average annual change
Spellings of Kaithlyn
Kaithlyn is not the most common spelling — Kathryn is, with 49.0% against Kaithlyn's 0.04%.
Grouped by closeness of spelling (up to two letter changes), same sex, with a floor on all-time use. It catches Sophia/Sofia and Aiden/Ayden, and misses spellings that sound alike but look different, like Sean and Shawn.
Where Kaithlyn is used
Across 1910–2025, Kaithlyn was most concentrated in California — about 1 in — girls, against 1 in 800,002 across all states with data. It was least common in Texas (1 in —).
Most concentrated
- 1California1 in —
- 2New York1 in —
- 3Texas1 in —
Shading is the share of that state's recorded girls given this name, not the raw count — otherwise the map would just show which states are biggest. Unshaded states have no published records for this period. U.S. birth records suppress state-year counts below 5; state counts therefore don't add up to the national total. Every state links to its full rankings. Kaithlyn has too little recent state data to map, so this covers all years from 1910.
Kaithlyn around the world
Where Kaithlyn ranks in official birth records elsewhere in the world. Rankings only — the number of births isn’t comparable between places, so it isn’t shown.
- Ireland2000–2000#536in 2000
- France2004–2014#7,182in 2014
- Canada2017–2017#2,633in 2017
- South Australia1998–1998#710in 1998
Popularity data from Central Statistics Office, Institut national de la statistique et des études économiques, Statistics Canada and Consumer and Business Services (South Australia). CSO, CBS SA data under CC BY 4.0. INSEE data under Licence Ouverte / Etalab 2.0. StatCan data under Statistics Canada Open Licence.
Kaithlyn by the numbers
The raw record for each sex the name is used for.
Names similar to Kaithlyn
Matched on shared beginnings and endings, similar length, and comparable popularity.
Sibling names for Kaithlyn
Names from the same era and popularity tier — the two things that make a sibling set feel deliberate — skipping lookalike spellings and shared initials.