Cosimo is a rare boys' name that peaked in 1927 and has grown less common since.
Cosimo is a boy name. In 2025 it ranked #5,654 for boy births in the United States (and #11,935 across all names), given to 16 babies. Cosimo first appears in 1911 and peaked in 1927 (30 births).
| Year | U.S. births | U.S. + territories | Rank |
|---|---|---|---|
| 2025 | 16 | 16 | #5,654 |
| 2024 | 19 | 19 | #5,104 |
| 2023 | 18 | 18 | #5,289 |
| 2022 | 12 | 12 | #6,907 |
| 2021 | 10 | 10 | #7,718 |
| 2020 | 10 | 10 | #7,626 |
| 2019 | 14 | 14 | #6,162 |
| 2018 | 14 | 14 | #6,095 |
| 2017 | 15 | 15 | #5,854 |
| 2016 | 6 | 6 | #10,999 |
| 2015 | 9 | 9 | #8,171 |
| 2014 | 5 | 5 | #12,447 |
| 2011 | 8 | 8 | #8,917 |
| 2010 | 9 | 9 | #8,278 |
| 2009 | 12 | 12 | #6,884 |
| 2008 | 10 | 10 | #7,801 |
| 2007 | 7 | 7 | #9,966 |
| 2006 | 6 | 6 | #10,931 |
| 2005 | 10 | 10 | #7,217 |
| 2004 | 5 | 5 | #11,690 |
| 2003 | 7 | 7 | #8,832 |
| 2001 | 5 | 5 | #10,895 |
| 2000 | 6 | 6 | #9,300 |
| 1999 | 7 | 7 | #8,014 |
| 1995 | 5 | — | #9,113 |
| 1994 | 5 | — | #9,055 |
| 1993 | 8 | — | #6,314 |
| 1992 | 6 | — | #7,599 |
| 1991 | 6 | — | #7,448 |
| 1988 | 8 | — | #5,285 |
| 1987 | 8 | — | #5,057 |
| 1983 | 7 | — | #5,029 |
| 1982 | 7 | — | #5,121 |
| 1981 | 6 | — | #5,638 |
| 1980 | 14 | — | #3,127 |
| 1977 | 7 | — | #4,688 |
| 1976 | 5 | — | #5,764 |
| 1975 | 8 | — | #4,018 |
| 1974 | 5 | — | #5,363 |
| 1972 | 7 | — | #4,053 |
| 1970 | 8 | — | #3,576 |
| 1969 | 10 | — | #2,900 |
| 1968 | 10 | — | #2,766 |
| 1967 | 9 | — | #2,811 |
| 1966 | 11 | — | #2,500 |
| 1964 | 6 | — | #3,678 |
| 1963 | 11 | — | #2,561 |
| 1962 | 5 | — | #4,162 |
| 1959 | 10 | — | #2,687 |
| 1957 | 7 | — | #3,301 |
| 1956 | 6 | — | #3,603 |
| 1955 | 8 | — | #3,015 |
| 1954 | 8 | — | #3,000 |
| 1953 | 8 | — | #2,956 |
| 1952 | 5 | — | #3,838 |
| 1951 | 9 | — | #2,700 |
| 1950 | 9 | — | #2,614 |
| 1949 | 9 | — | #2,649 |
| 1948 | 8 | — | #2,825 |
| 1947 | 11 | — | #2,394 |
| 1946 | 12 | — | #2,172 |
| 1945 | 8 | — | #2,604 |
| 1944 | 13 | — | #2,009 |
| 1943 | 7 | — | #3,009 |
| 1942 | 5 | — | #3,662 |
| 1941 | 9 | — | #2,515 |
| 1940 | 10 | — | #2,357 |
| 1938 | 11 | — | #2,215 |
| 1937 | 5 | — | #3,625 |
| 1936 | 7 | — | #2,928 |
| 1935 | 8 | — | #2,752 |
| 1934 | 10 | — | #2,427 |
| 1933 | 8 | — | #2,786 |
| 1932 | 11 | — | #2,352 |
| 1931 | 9 | — | #2,697 |
| 1930 | 22 | — | #1,567 |
| 1929 | 25 | — | #1,450 |
| 1928 | 17 | — | #1,918 |
| 1927 | 30 | — | #1,354 |
| 1926 | 20 | — | #1,739 |
| 1925 | 15 | — | #2,109 |
| 1924 | 25 | — | #1,542 |
| 1923 | 27 | — | #1,433 |
| 1922 | 23 | — | #1,599 |
| 1921 | 17 | — | #1,997 |
| 1920 | 19 | — | #1,835 |
| 1919 | 13 | — | #2,289 |
| 1918 | 22 | — | #1,610 |
| 1917 | 22 | — | #1,541 |
| 1916 | 15 | — | #1,976 |
| 1915 | 17 | — | #1,719 |
| 1914 | 15 | — | #1,620 |
| 1913 | 8 | — | #2,128 |
| 1912 | 6 | — | #2,337 |
| 1911 | 5 | — | #1,794 |