Day is a rare name used for both girls and boys that peaked in 1975 and has since faded.
Day is predominantly a girl name. In 2025 it ranked #15,481 among girls (5) and #10,966 among boys (6) — overall #15,327 across all names. The charts below show girls and boys separately.
| Year | U.S. births | U.S. + territories | ♀ Rank | ♂ Rank |
|---|---|---|---|---|
| 2025 | 11 | 11 | #15,481 | #10,966 |
| 2022 | 14 | 14 | #11,462 | #11,186 |
| 2020 | 5 | 5 | #15,701 | — |
| 2017 | 6 | 6 | #14,575 | — |
| 2016 | 7 | 7 | #13,252 | — |
| 2015 | 5 | 5 | — | #12,507 |
| 2014 | 7 | 7 | #13,428 | — |
| 2012 | 6 | 6 | #15,442 | — |
| 2010 | 5 | 5 | #17,678 | — |
| 2009 | 5 | 5 | — | #12,918 |
| 2007 | 6 | 6 | #15,998 | — |
| 2001 | 6 | 6 | #13,964 | — |
| 2000 | 5 | 5 | #15,643 | — |
| 1995 | 6 | — | — | #8,030 |
| 1991 | 5 | — | #13,687 | — |
| 1986 | 5 | — | — | #6,968 |
| 1981 | 5 | — | — | #6,493 |
| 1979 | 6 | — | #9,257 | — |
| 1977 | 13 | — | #8,701 | #4,702 |
| 1976 | 8 | — | #6,759 | — |
| 1975 | 15 | — | #6,635 | #4,421 |
| 1974 | 11 | — | #5,078 | — |
| 1973 | 12 | — | #4,621 | — |
| 1972 | 6 | — | #7,493 | — |
| 1971 | 10 | — | #5,202 | — |
| 1970 | 12 | — | #6,491 | #4,867 |
| 1969 | 5 | — | — | #4,532 |
| 1966 | 5 | — | #6,797 | — |
| 1965 | 6 | — | — | #3,617 |
| 1955 | 10 | — | #3,836 | — |
| 1954 | 6 | — | — | #3,532 |
| 1947 | 5 | — | — | #3,850 |
| 1944 | 5 | — | — | #3,537 |
| 1942 | 11 | — | #4,226 | #3,679 |
| 1940 | 5 | — | — | #3,561 |
| 1937 | 5 | — | — | #3,642 |
| 1932 | 7 | — | — | #3,148 |
| 1925 | 7 | — | — | #3,484 |
| 1922 | 7 | — | — | #3,599 |
| 1920 | 5 | — | — | #4,451 |
| 1918 | 5 | — | — | #4,324 |
| 1916 | 6 | — | — | #3,594 |
| 1915 | 6 | — | — | #3,496 |