How rare is the name Kay?

77,013 people in the United States have the first name Kay, about 1 in 3,922. It ranks #684 of 53,615 first names in the 2020 Census.

first name

KAY

#684

of 53,615 first names recorded in the 2020 Census

People
77,013
About
1 in 3,922
This common or more
64.1%
Who bears it

Of the 77,013 people named Kay, 84.8% reported their origin as White, 6.2% as Black and 5% as Asian or Pacific Islander. 97% are female. These count how people described themselves on the 2020 Census, not where the name comes from.

Kay peaked in 1942, when 3,718 babies got the name.

Births per year, SSA records 1880–2025
18822025
Peak year
1942
Births that year
3,718
In 2025*
47 ▼99%
Recorded as
almost entirely female

At least 102,545 babies have been given the name since 1882. 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.

Kay by decade

Among all names given to American babies, its best decade was the 1940s, when it ranked #185. The largest share of babies named Kay, 45.3%, were born during the baby boom (1946–1964).

1880s#1,83542
1890s#1,359138
1900s#761491
1910s#6312,465
1920s#6673,425
1930s#23418,607
1940s#18533,379
1950s#28024,966
1960s#45712,554
1970s#1,1252,581
1980s#1,7461,464
1990s#2,834916
2000s#4,485653
2010s#5,331544
2020s#5,392320
Before 19010.2%
Greatest Generation 1901–275.6%
Silent Generation 1928–4538.8%
Baby boom 1946–6445.3%
Generation X 1965–806.4%
Millennials 1981–962%
Generation Z 1997–121%
2013 and later0.7%

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 Kay is most common

Compared with all babies born in each state since 1910, Kay has been most common in South Dakota (3.1×), Iowa (2.7×), and Wisconsin (2.6×), and least common in New Hampshire (0.12×).

94,956 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.

Spelled almost the same

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

Also a last name

As a last name, Kay ranks #1,538 of 156,621, with 22,730 people. See Kay as a last name

Compare