How rare is the name Kathlyn?

3,632 people in the United States have the first name Kathlyn, about 1 in 83,158. It ranks #4,915 of 53,615 first names in the 2020 Census.

first name

KATHLYN

#4,915

of 53,615 first names recorded in the 2020 Census

People
3,632
About
1 in 83,158
This common or more
84.7%
Who bears it

Of the 3,632 people named Kathlyn, 74.7% reported their origin as White, 8.3% as Asian or Pacific Islander and 7.4% as Hispanic or Latino. Virtually all are female (99.8%). These count how people described themselves on the 2020 Census, not where the name comes from.

Kathlyn peaked in 1951, when 125 babies got the name.

Births per year, SSA records 1880–2025
18972025
Peak year
1951
Births that year
125
In 2025*
28 ▼78%
Recorded as
almost entirely female

At least 5,156 babies have been given the name since 1897. Years SSA withheld, because fewer than 5 were born, are skipped rather than drawn as zero. * 2025 is the newest year published and it undercounts: a card application is filed some time after a birth.

Kathlyn by decade

Among all names given to American babies, its best decade was the 1910s, when it ranked #1,462. The largest share of babies named Kathlyn, 29.2%, were born during the baby boom (1946–1964).

1890s#2,89720
1900s#2,21776
1910s#1,462565
1920s#1,945512
1930s#2,614268
1940s#1,658728
1950s#1,848851
1960s#3,028382
1970s#4,994223
1980s#4,072382
1990s#4,315489
2000s#6,437383
2010s#12,804152
2020s#10,025125
Before 19010.6%
Greatest Generation 1901–2720.7%
Silent Generation 1928–4512.4%
Baby boom 1946–6429.2%
Generation X 1965–808%
Millennials 1981–9614.3%
Generation Z 1997–1210.5%
2013 and later4.4%

Rank counts both sexes together, among every name SSA recorded that decade; the number under it is births. The 2020s run only to 2025. Generation years follow Pew Research Center, which has not named a generation after 2012.

Where Kathlyn is most common

Compared with all babies born in each state since 1910, Kathlyn has been most common in Illinois (2.7×), California (2.4×), and Michigan (2.3×), and least common in Pennsylvania (0.52×).

1,483 births recorded by state, 1910–2025. 2× means twice as common as nationally. States with fewer than 30 such births are left blank, and SSA withholds any year with fewer than 5 in a state, so small states read low.

Either side of Kathlyn

#4,912 Reymundo · 3,635#4,914 Mikah · 3,634#4,916 Tanika · 3,629#4,917 Adyson · 3,626

Spelled almost the same

8 first names in the 2020 Census spelled within a letter or two of Kathlyn, most common first.

#77 Kathleen · 547,321#374 Kaitlyn · 148,542#481 Katelyn · 117,578#1,390 Katelynn · 25,135#1,755 Katlyn · 17,216#2,915 Katelin · 7,807#3,917 Katlin · 4,993#5,177 Katlynn · 3,369

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