Knox is an established boys' name that has climbed to its highest level yet, peaking in 2022.
Knox is predominantly a boy name. In 2025 it ranked #196 among boys (1,836) and #8,121 among girls (13) — overall #368 across all names. The charts below show girls and boys separately.
| Year | U.S. births | U.S. + territories | ♀ Rank | ♂ Rank |
|---|---|---|---|---|
| 2025 | 1,849 | 1,849 | #8,121 | #196 |
| 2024 | 1,726 | 1,726 | #6,056 | #209 |
| 2023 | 1,805 | 1,805 | #5,656 | #208 |
| 2022 | 1,931 | 1,931 | #4,731 | #199 |
| 2021 | 1,760 | 1,760 | #5,487 | #220 |
| 2020 | 1,548 | 1,548 | #6,506 | #238 |
| 2019 | 1,582 | 1,582 | #6,304 | #241 |
| 2018 | 1,728 | 1,728 | #5,913 | #219 |
| 2017 | 1,658 | 1,658 | #6,690 | #233 |
| 2016 | 1,555 | 1,555 | #7,442 | #245 |
| 2015 | 1,417 | 1,417 | #8,233 | #258 |
| 2014 | 1,255 | 1,255 | #9,879 | #286 |
| 2013 | 937 | 937 | #11,513 | #344 |
| 2012 | 822 | 822 | — | #368 |
| 2011 | 637 | 637 | #14,116 | #434 |
| 2010 | 579 | 579 | — | #459 |
| 2009 | 341 | 341 | — | #704 |
| 2008 | 93 | 93 | — | #1,661 |
| 2007 | 61 | 61 | — | #2,201 |
| 2006 | 60 | 60 | — | #2,163 |
| 2005 | 48 | 48 | — | #2,415 |
| 2004 | 50 | 50 | — | #2,297 |
| 2003 | 33 | 33 | — | #2,968 |
| 2002 | 25 | 25 | — | #3,515 |
| 2001 | 20 | 20 | — | #4,051 |
| 2000 | 22 | 22 | — | #3,712 |
| 1999 | 21 | 21 | — | #3,652 |
| 1998 | 24 | 24 | — | #3,247 |
| 1997 | 17 | — | — | #3,976 |
| 1996 | 17 | — | — | #3,937 |
| 1995 | 11 | — | — | #5,353 |
| 1994 | 6 | — | — | #8,329 |
| 1993 | 9 | — | — | #6,013 |
| 1992 | 9 | — | — | #5,918 |
| 1991 | 6 | — | — | #7,810 |
| 1990 | 7 | — | — | #6,842 |
| 1989 | 6 | — | — | #7,480 |
| 1988 | 5 | — | — | #7,961 |
| 1986 | 6 | — | — | #6,361 |
| 1985 | 8 | — | — | #4,950 |
| 1982 | 5 | — | — | #6,910 |
| 1973 | 5 | — | — | #5,510 |
| 1971 | 7 | — | — | #4,180 |
| 1970 | 8 | — | — | #3,689 |
| 1966 | 7 | — | — | #3,394 |
| 1965 | 5 | — | — | #4,213 |
| 1964 | 5 | — | — | #4,349 |
| 1963 | 7 | — | — | #3,506 |
| 1962 | 7 | — | — | #3,483 |
| 1961 | 10 | — | — | #2,807 |
| 1959 | 8 | — | — | #3,156 |
| 1958 | 10 | — | — | #2,733 |
| 1957 | 6 | — | — | #3,783 |
| 1955 | 8 | — | — | #3,099 |
| 1954 | 12 | — | — | #2,378 |
| 1953 | 14 | — | — | #2,150 |
| 1952 | 9 | — | — | #2,788 |
| 1951 | 15 | — | — | #2,014 |
| 1950 | 10 | — | — | #2,507 |
| 1949 | 12 | — | — | #2,282 |
| 1948 | 5 | — | — | #3,953 |
| 1947 | 10 | — | — | #2,583 |
| 1946 | 7 | — | — | #3,044 |
| 1945 | 9 | — | — | #2,490 |
| 1944 | 9 | — | — | #2,555 |
| 1943 | 14 | — | — | #2,035 |
| 1942 | 15 | — | — | #1,912 |
| 1941 | 15 | — | — | #1,860 |
| 1940 | 15 | — | — | #1,852 |
| 1939 | 6 | — | — | #3,296 |
| 1938 | 6 | — | — | #3,361 |
| 1937 | 9 | — | — | #2,588 |
| 1936 | 9 | — | — | #2,539 |
| 1935 | 9 | — | — | #2,627 |
| 1934 | 14 | — | — | #1,975 |
| 1933 | 11 | — | — | #2,295 |
| 1932 | 7 | — | — | #3,235 |
| 1931 | 11 | — | — | #2,398 |
| 1930 | 13 | — | — | #2,241 |
| 1929 | 19 | — | — | #1,761 |
| 1928 | 16 | — | — | #2,009 |
| 1927 | 15 | — | — | #2,156 |
| 1926 | 16 | — | — | #2,032 |
| 1925 | 11 | — | — | #2,677 |
| 1924 | 16 | — | — | #2,094 |
| 1923 | 21 | — | — | #1,726 |
| 1922 | 21 | — | — | #1,729 |
| 1921 | 22 | — | — | #1,678 |
| 1920 | 16 | — | — | #2,096 |
| 1919 | 19 | — | — | #1,782 |
| 1918 | 18 | — | — | #1,863 |
| 1917 | 23 | — | — | #1,507 |
| 1916 | 18 | — | — | #1,733 |
| 1915 | 9 | — | — | #2,732 |
| 1914 | 6 | — | — | #3,095 |
| 1913 | 10 | — | — | #1,882 |
| 1912 | 8 | — | — | #1,969 |
| 1909 | 6 | — | — | #1,377 |
| 1907 | 6 | — | — | #1,269 |
| 1900 | 8 | — | — | #1,006 |
| 1896 | 5 | — | — | #1,184 |
| 1888 | 7 | — | — | #874 |
| 1881 | 8 | — | — | #677 |