Unknown is a unisex name. In 2025 it ranked #3654 for unisex births in the United States, given to 95 babies. Unknown first appears in the data in 1880 and reached its peak in 1954 (1,192 births). The chart below shows how the name has risen and fallen over time.
| Year | U.S. births | Rank |
|---|---|---|
| 2025 | 95 | #3,654 |
| 2024 | 81 | #4,106 |
| 2023 | 126 | #3,034 |
| 2022 | 137 | #2,883 |
| 2021 | 134 | #2,889 |
| 2020 | 103 | #3,402 |
| 2019 | 130 | #2,960 |
| 2018 | 151 | #2,645 |
| 2017 | 114 | #3,249 |
| 2016 | 87 | #3,900 |
| 2015 | 103 | #3,478 |
| 2014 | 151 | #2,655 |
| 2013 | 165 | #2,470 |
| 2012 | 163 | #2,495 |
| 2011 | 164 | #2,482 |
| 2010 | 154 | #2,610 |
| 2009 | 198 | #2,227 |
| 2008 | 135 | #2,915 |
| 2007 | 73 | #4,394 |
| 2006 | 41 | #6,372 |
| 2005 | 48 | #5,506 |
| 2004 | 44 | #5,715 |
| 2003 | 61 | #4,441 |
| 2002 | 45 | #5,324 |
| 2001 | 43 | #5,406 |
| 2000 | 81 | #3,465 |
| 1999 | 42 | #5,160 |
| 1998 | 33 | #5,966 |
| 1997 | 50 | #4,305 |
| 1996 | 106 | #2,586 |
| 1995 | 471 | #971 |
| 1994 | 324 | #1,222 |
| 1993 | 215 | #1,583 |
| 1992 | 290 | #1,320 |
| 1991 | 557 | #867 |
| 1990 | 354 | #1,153 |
| 1989 | 513 | #881 |
| 1988 | 162 | #1,698 |
| 1987 | 33 | #4,579 |
| 1986 | 17 | #7,047 |
| 1985 | 11 | #9,202 |
| 1984 | 12 | #8,460 |
| 1983 | 20 | #5,936 |
| 1982 | 28 | #4,837 |
| 1981 | 29 | #4,713 |
| 1980 | 16 | #6,950 |
| 1979 | 22 | #5,527 |
| 1978 | 19 | #5,876 |
| 1977 | 25 | #4,816 |
| 1976 | 30 | #4,119 |
| 1975 | 39 | #3,427 |
| 1974 | 28 | #4,135 |
| 1973 | 43 | #3,038 |
| 1972 | 29 | #3,875 |
| 1971 | 51 | #2,795 |
| 1970 | 60 | #2,534 |
| 1969 | 51 | #2,679 |
| 1968 | 50 | #2,578 |
| 1967 | 59 | #2,303 |
| 1966 | 74 | #2,034 |
| 1965 | 64 | #2,234 |
| 1964 | 93 | #1,867 |
| 1963 | 125 | #1,606 |
| 1962 | 162 | #1,401 |
| 1961 | 264 | #1,090 |
| 1960 | 327 | #963 |
| 1959 | 333 | #953 |
| 1958 | 478 | #768 |
| 1957 | 714 | #618 |
| 1956 | 997 | #502 |
| 1955 | 1,061 | #473 |
| 1954 | 1,192 | #437 |
| 1953 | 1,125 | #439 |
| 1952 | 1,110 | #432 |
| 1951 | 1,004 | #445 |
| 1950 | 915 | #458 |
| 1949 | 721 | #531 |
| 1948 | 457 | #682 |
| 1947 | 247 | #955 |
| 1946 | 147 | #1,145 |
| 1945 | 96 | #1,342 |
| 1944 | 87 | #1,434 |
| 1943 | 86 | #1,482 |
| 1942 | 43 | #2,146 |
| 1941 | 26 | #2,695 |
| 1940 | 25 | #2,739 |
| 1939 | 19 | #3,146 |
| 1938 | 15 | #3,673 |
| 1937 | 19 | #3,159 |
| 1936 | 10 | #4,579 |
| 1935 | 18 | #3,282 |
| 1934 | 16 | #3,535 |
| 1933 | 13 | #3,949 |
| 1932 | 22 | #2,967 |
| 1931 | 19 | #3,210 |
| 1930 | 23 | #2,993 |
| 1929 | 20 | #3,294 |
| 1928 | 22 | #3,172 |
| 1927 | 18 | #3,704 |
| 1926 | 20 | #3,433 |
| 1925 | 28 | #2,815 |
| 1924 | 17 | #3,918 |
| 1923 | 29 | #2,744 |
| 1922 | 32 | #2,605 |
| 1921 | 32 | #2,615 |
| 1920 | 27 | #2,862 |
| 1919 | 41 | #2,140 |
| 1918 | 51 | #1,890 |
| 1917 | 41 | #2,059 |
| 1916 | 37 | #2,160 |
| 1915 | 43 | #1,915 |
| 1914 | 29 | #2,107 |
| 1913 | 28 | #1,895 |
| 1912 | 27 | #1,802 |
| 1911 | 24 | #1,483 |
| 1910 | 13 | #2,059 |
| 1909 | 6 | #3,011 |
| 1908 | 13 | #1,841 |
| 1907 | 20 | #1,376 |
| 1906 | 9 | #2,098 |
| 1905 | 20 | #1,326 |
| 1904 | 17 | #1,416 |
| 1903 | 12 | #1,661 |
| 1902 | 23 | #1,140 |
| 1901 | 15 | #1,351 |
| 1900 | 31 | #1,037 |
| 1899 | 18 | #1,205 |
| 1898 | 22 | #1,132 |
| 1897 | 16 | #1,289 |
| 1896 | 15 | #1,369 |
| 1895 | 9 | #1,820 |
| 1894 | 20 | #1,102 |
| 1893 | 7 | #1,938 |
| 1892 | 14 | #1,350 |
| 1891 | 9 | #1,574 |
| 1890 | 12 | #1,368 |
| 1889 | 14 | #1,207 |
| 1888 | 6 | #1,986 |
| 1887 | 5 | #2,022 |
| 1886 | 5 | #2,018 |
| 1885 | 7 | #1,603 |
| 1883 | 7 | #1,490 |
| 1882 | 7 | #1,508 |
| 1881 | 8 | #1,294 |
| 1880 | 5 | #1,880 |