Kay is a familiar girls' name that peaked in 1942 and has since faded.
Kay is predominantly a girl name. In 2025 it ranked #3,946 among girls (37) and #7,951 among boys (10) — overall #5,874 across all names. The charts below show girls and boys separately.
| Year | U.S. births | U.S. + territories | ♀ Rank | ♂ Rank |
|---|---|---|---|---|
| 2025 | 47 | 47 | #3,946 | #7,951 |
| 2024 | 52 | 52 | #3,926 | #6,334 |
| 2023 | 61 | 61 | #3,349 | #6,719 |
| 2022 | 57 | 57 | #3,391 | #8,049 |
| 2021 | 51 | 51 | #3,644 | #8,517 |
| 2020 | 52 | 52 | #3,577 | #7,805 |
| 2019 | 50 | 50 | #3,586 | #10,303 |
| 2018 | 69 | 69 | #2,723 | #11,492 |
| 2017 | 59 | 59 | #3,175 | #9,294 |
| 2016 | 52 | 52 | #3,399 | #13,233 |
| 2015 | 51 | 51 | #3,632 | #9,163 |
| 2014 | 66 | 66 | #2,870 | #11,439 |
| 2013 | 51 | 51 | #3,204 | — |
| 2012 | 52 | 52 | #3,191 | — |
| 2011 | 47 | 47 | #3,432 | — |
| 2010 | 47 | 47 | #3,443 | — |
| 2009 | 41 | 41 | #3,836 | — |
| 2008 | 46 | 46 | #3,555 | — |
| 2007 | 66 | 66 | #2,768 | — |
| 2006 | 63 | 63 | #2,795 | — |
| 2005 | 66 | 66 | #2,746 | #12,409 |
| 2004 | 74 | 74 | #2,515 | #9,462 |
| 2003 | 72 | 72 | #2,477 | #10,250 |
| 2002 | 79 | 79 | #2,129 | — |
| 2001 | 72 | 72 | #2,249 | — |
| 2000 | 74 | 74 | #2,163 | — |
| 1999 | 66 | 66 | #2,270 | — |
| 1998 | 75 | 75 | #2,094 | #10,480 |
| 1997 | 74 | — | #1,954 | — |
| 1996 | 73 | — | #2,074 | #8,470 |
| 1995 | 87 | — | #1,768 | #9,603 |
| 1994 | 95 | — | #1,695 | #7,372 |
| 1993 | 106 | — | #1,558 | #8,157 |
| 1992 | 109 | — | #1,511 | #9,127 |
| 1991 | 112 | — | #1,503 | #6,238 |
| 1990 | 119 | — | #1,393 | #8,823 |
| 1989 | 122 | — | #1,329 | #8,576 |
| 1988 | 150 | — | #1,105 | #5,010 |
| 1987 | 125 | — | #1,218 | #5,792 |
| 1986 | 136 | — | #1,123 | #5,654 |
| 1985 | 139 | — | #1,063 | — |
| 1984 | 153 | — | #983 | #5,982 |
| 1983 | 150 | — | #975 | — |
| 1982 | 159 | — | #982 | #4,815 |
| 1981 | 172 | — | #916 | #4,747 |
| 1980 | 158 | — | #969 | #6,766 |
| 1979 | 164 | — | #944 | #4,637 |
| 1978 | 161 | — | #916 | #5,429 |
| 1977 | 202 | — | #775 | #4,869 |
| 1976 | 198 | — | #758 | #4,680 |
| 1975 | 206 | — | #720 | — |
| 1974 | 248 | — | #640 | #3,706 |
| 1973 | 277 | — | #581 | #5,482 |
| 1972 | 257 | — | #620 | #4,721 |
| 1971 | 384 | — | #504 | #3,804 |
| 1970 | 484 | — | #455 | #3,677 |
| 1969 | 508 | — | #433 | #2,964 |
| 1968 | 647 | — | #353 | #2,827 |
| 1967 | 721 | — | #327 | #2,692 |
| 1966 | 865 | — | #295 | #2,883 |
| 1965 | 1,038 | — | #270 | #1,961 |
| 1964 | 1,319 | — | #243 | #1,939 |
| 1963 | 1,623 | — | #212 | #2,162 |
| 1962 | 1,898 | — | #197 | #1,835 |
| 1961 | 1,981 | — | #192 | #1,585 |
| 1960 | 1,954 | — | #192 | #1,504 |
| 1959 | 2,030 | — | #182 | #1,571 |
| 1958 | 2,263 | — | #169 | #1,571 |
| 1957 | 2,392 | — | #163 | #1,289 |
| 1956 | 2,421 | — | #154 | #1,521 |
| 1955 | 2,363 | — | #157 | #1,260 |
| 1954 | 2,542 | — | #146 | #1,256 |
| 1953 | 2,495 | — | #146 | #1,320 |
| 1952 | 2,803 | — | #133 | #1,258 |
| 1951 | 2,997 | — | #120 | #1,269 |
| 1950 | 2,660 | — | #123 | #1,278 |
| 1949 | 2,797 | — | #119 | #1,040 |
| 1948 | 2,985 | — | #113 | #1,100 |
| 1947 | 3,579 | — | #104 | #910 |
| 1946 | 3,402 | — | #101 | #1,038 |
| 1945 | 3,109 | — | #91 | #893 |
| 1944 | 3,239 | — | #88 | #750 |
| 1943 | 3,592 | — | #81 | #646 |
| 1942 | 3,718 | — | #75 | #656 |
| 1941 | 3,634 | — | #70 | #618 |
| 1940 | 3,324 | — | #77 | #522 |
| 1939 | 3,383 | — | #76 | #513 |
| 1938 | 3,234 | — | #81 | #532 |
| 1937 | 3,139 | — | #79 | #507 |
| 1936 | 2,545 | — | #98 | #483 |
| 1935 | 1,798 | — | #134 | #465 |
| 1934 | 1,589 | — | #143 | #448 |
| 1933 | 999 | — | #200 | #483 |
| 1932 | 782 | — | #238 | #522 |
| 1931 | 682 | — | #259 | #521 |
| 1930 | 456 | — | #358 | #588 |
| 1929 | 298 | — | #448 | #691 |
| 1928 | 307 | — | #463 | #692 |
| 1927 | 369 | — | #419 | #623 |
| 1926 | 301 | — | #457 | #727 |
| 1925 | 315 | — | #439 | #811 |
| 1924 | 379 | — | #395 | #768 |
| 1923 | 370 | — | #396 | #704 |
| 1922 | 344 | — | #391 | #868 |
| 1921 | 364 | — | #383 | #905 |
| 1920 | 378 | — | #370 | #839 |
| 1919 | 370 | — | #355 | #1,093 |
| 1918 | 369 | — | #368 | #877 |
| 1917 | 323 | — | #377 | #1,053 |
| 1916 | 318 | — | #380 | #944 |
| 1915 | 274 | — | #386 | #1,172 |
| 1914 | 240 | — | #361 | #1,175 |
| 1913 | 179 | — | #381 | #1,159 |
| 1912 | 160 | — | #386 | #1,154 |
| 1911 | 120 | — | #382 | #1,238 |
| 1910 | 112 | — | #382 | #1,510 |
| 1909 | 83 | — | #402 | — |
| 1908 | 81 | — | #418 | #1,300 |
| 1907 | 59 | — | #493 | #1,266 |
| 1906 | 47 | — | #547 | #1,337 |
| 1905 | 54 | — | #485 | #1,335 |
| 1904 | 39 | — | #532 | — |
| 1903 | 42 | — | #535 | #1,216 |
| 1902 | 31 | — | #659 | #1,230 |
| 1901 | 22 | — | #694 | — |
| 1900 | 33 | — | #714 | #1,111 |
| 1899 | 28 | — | #654 | #1,136 |
| 1898 | 14 | — | #942 | — |
| 1897 | 20 | — | #846 | #1,149 |
| 1896 | 13 | — | #927 | — |
| 1895 | 10 | — | #1,088 | — |
| 1894 | 20 | — | #826 | #1,021 |
| 1893 | 16 | — | #751 | — |
| 1892 | 7 | — | #1,219 | — |
| 1891 | 5 | — | #1,424 | — |
| 1890 | 5 | — | #1,423 | — |
| 1889 | 7 | — | #1,077 | — |
| 1888 | 12 | — | #1,212 | #989 |
| 1887 | 6 | — | #1,089 | — |
| 1886 | 6 | — | #1,037 | — |
| 1885 | 6 | — | #987 | — |
| 1882 | 5 | — | — | #1,019 |