The baby name Leo appears in baby name data for the United States from 1910 to 2024. It was most popular in 2022 with 8,807 babies given the name.
In the later years of this period, Leo has become more popular compared with earlier years.
| Year | Count |
|---|---|
| 1910 | 10 |
| 1910 | 877 |
| 1911 | 944 |
| 1912 | 1,949 |
| 1913 | 16 |
| 1913 | 2,401 |
| 1914 | 12 |
| 1914 | 3,192 |
| 1915 | 22 |
| 1915 | 4,286 |
| 1916 | 43 |
| 1916 | 4,522 |
| 1917 | 10 |
| 1917 | 4,775 |
| 1918 | 37 |
| 1918 | 5,105 |
| 1919 | 4,922 |
| 1920 | 26 |
| 1920 | 5,082 |
| 1921 | 19 |
| 1921 | 5,099 |
| 1922 | 4,855 |
| 1923 | 7 |
| 1923 | 4,962 |
| 1924 | 21 |
| 1924 | 4,980 |
| 1925 | 4,688 |
| 1926 | 32 |
| 1926 | 4,422 |
| 1927 | 10 |
| 1927 | 4,341 |
| 1928 | 3,766 |
| 1929 | 3,767 |
| 1930 | 5 |
| 1930 | 3,738 |
| 1931 | 5 |
| 1931 | 3,334 |
| 1932 | 10 |
| 1932 | 3,169 |
| 1933 | 5 |
| 1933 | 2,908 |
| 1934 | 2,840 |
| 1935 | 2,615 |
| 1936 | 2,544 |
| 1937 | 2,501 |
| 1938 | 2,223 |
| 1939 | 2,038 |
| 1940 | 2,058 |
| 1941 | 2,112 |
| 1942 | 2,332 |
| 1943 | 2,099 |
| 1944 | 1,922 |
| 1945 | 1,878 |
| 1946 | 1,801 |
| 1947 | 2,171 |
| 1948 | 2,155 |
| 1949 | 2,019 |
| 1950 | 1,919 |
| 1951 | 1,940 |
| 1952 | 1,876 |
| 1953 | 2,069 |
| 1954 | 1,804 |
| 1955 | 2,086 |
| 1956 | 2,049 |
| 1957 | 1,895 |
| 1958 | 1,710 |
| 1959 | 1,678 |
| 1960 | 1,389 |
| 1961 | 1,317 |
| 1962 | 1,271 |
| 1963 | 1,155 |
| 1964 | 1,160 |
| 1965 | 1,056 |
| 1966 | 930 |
| 1967 | 800 |
| 1968 | 720 |
| 1969 | 791 |
| 1970 | 697 |
| 1971 | 653 |
| 1972 | 548 |
| 1973 | 448 |
| 1974 | 452 |
| 1975 | 451 |
| 1976 | 484 |
| 1977 | 454 |
| 1978 | 430 |
| 1979 | 464 |
| 1980 | 413 |
| 1981 | 449 |
| 1982 | 420 |
| 1983 | 356 |
| 1984 | 314 |
| 1985 | 345 |
| 1986 | 319 |
| 1987 | 353 |
| 1988 | 335 |
| 1989 | 318 |
| 1990 | 356 |
| 1991 | 454 |
| 1992 | 457 |
| 1993 | 373 |
| 1994 | 411 |
| 1995 | 378 |
| 1996 | 353 |
| 1997 | 349 |
| 1998 | 448 |
| 1999 | 505 |
| 2000 | 587 |
| 2001 | 675 |
| 2002 | 715 |
| 2003 | 1,072 |
| 2004 | 1,341 |
| 2005 | 1,252 |
| 2006 | 1,615 |
| 2007 | 1,478 |
| 2008 | 1,658 |
| 2009 | 1,877 |
| 2010 | 2,018 |
| 2011 | 2,350 |
| 2012 | 3,162 |
| 2013 | 3,927 |
| 2014 | 4,207 |
| 2015 | 5,406 |
| 2016 | 6,566 |
| 2017 | 7,097 |
| 2018 | 8,102 |
| 2019 | 8,802 |
| 2020 | 6,918 |
| 2021 | 10 |
| 2021 | 8,502 |
| 2022 | 16 |
| 2022 | 8,807 |
| 2023 | 8,455 |
| 2024 | 7,944 |