Ilsa is a rare girls' name that peaked in 2011 and has grown less common since.
Ilsa is a girl name. In 2025 it ranked #5,622 for girl births in the United States (and #9,766 across all names), given to 22 babies. Ilsa first appears in 1943 and peaked in 2011 (34 births).
| Year | U.S. births | U.S. + territories | Rank |
|---|---|---|---|
| 2025 | 22 | 22 | #5,622 |
| 2024 | 10 | 10 | #9,835 |
| 2023 | 12 | 12 | #8,673 |
| 2022 | 15 | 15 | #7,415 |
| 2021 | 14 | 14 | #7,785 |
| 2020 | 17 | 17 | #6,741 |
| 2019 | 24 | 24 | #5,358 |
| 2018 | 22 | 22 | #5,674 |
| 2017 | 18 | 18 | #6,639 |
| 2016 | 10 | 10 | #10,386 |
| 2015 | 9 | 9 | #11,259 |
| 2014 | 16 | 16 | #7,440 |
| 2013 | 31 | 31 | #4,571 |
| 2012 | 17 | 17 | #7,254 |
| 2011 | 34 | 34 | #4,288 |
| 2010 | 24 | 24 | #5,689 |
| 2009 | 23 | 23 | #5,970 |
| 2008 | 22 | 22 | #6,222 |
| 2007 | 22 | 22 | #6,183 |
| 2006 | 16 | 16 | #7,624 |
| 2005 | 17 | 17 | #6,947 |
| 2004 | 16 | 16 | #7,203 |
| 2003 | 22 | 22 | #5,485 |
| 2002 | 14 | 14 | #7,569 |
| 2001 | 21 | 21 | #5,434 |
| 2000 | 6 | 6 | #13,803 |
| 1999 | 21 | 21 | #5,099 |
| 1998 | 11 | 11 | #8,209 |
| 1997 | 9 | — | #9,314 |
| 1996 | 19 | — | #5,143 |
| 1995 | 10 | — | #8,313 |
| 1994 | 14 | — | #6,448 |
| 1993 | 12 | — | #7,189 |
| 1992 | 15 | — | #6,122 |
| 1991 | 9 | — | #8,855 |
| 1989 | 7 | — | #10,091 |
| 1988 | 13 | — | #6,017 |
| 1987 | 8 | — | #8,267 |
| 1986 | 14 | — | #5,271 |
| 1985 | 6 | — | #9,745 |
| 1984 | 14 | — | #5,040 |
| 1983 | 9 | — | #6,916 |
| 1981 | 7 | — | #8,436 |
| 1980 | 7 | — | #8,469 |
| 1979 | 6 | — | #9,400 |
| 1978 | 8 | — | #7,193 |
| 1977 | 5 | — | #10,178 |
| 1976 | 9 | — | #6,233 |
| 1975 | 12 | — | #4,960 |
| 1973 | 8 | — | #6,287 |
| 1972 | 16 | — | #3,770 |
| 1971 | 7 | — | #6,866 |
| 1970 | 8 | — | #6,005 |
| 1969 | 6 | — | #6,940 |
| 1968 | 9 | — | #4,904 |
| 1967 | 12 | — | #3,926 |
| 1966 | 13 | — | #3,630 |
| 1965 | 9 | — | #4,621 |
| 1964 | 10 | — | #4,463 |
| 1963 | 7 | — | #5,530 |
| 1962 | 8 | — | #5,025 |
| 1961 | 5 | — | #6,948 |
| 1960 | 9 | — | #4,580 |
| 1958 | 9 | — | #4,299 |
| 1957 | 6 | — | #5,672 |
| 1955 | 9 | — | #4,186 |
| 1951 | 6 | — | #5,079 |
| 1950 | 6 | — | #4,961 |
| 1948 | 6 | — | #4,889 |
| 1947 | 6 | — | #4,970 |
| 1945 | 5 | — | #4,843 |
| 1944 | 12 | — | #2,687 |
| 1943 | 6 | — | #4,402 |