The baby name Gennaro appears in baby name data for the United States from 1910 to 2023. It was most popular in 1917 with 35 babies given the name.
In the later years of this period, Gennaro has become less common than it once was.
| Year | Count |
|---|---|
| 1910 | 5 |
| 1911 | 7 |
| 1912 | 14 |
| 1913 | 21 |
| 1914 | 20 |
| 1915 | 17 |
| 1916 | 15 |
| 1917 | 35 |
| 1918 | 23 |
| 1919 | 19 |
| 1920 | 32 |
| 1921 | 23 |
| 1922 | 24 |
| 1923 | 24 |
| 1924 | 17 |
| 1925 | 9 |
| 1926 | 33 |
| 1927 | 33 |
| 1928 | 18 |
| 1929 | 26 |
| 1930 | 27 |
| 1931 | 19 |
| 1932 | 13 |
| 1933 | 15 |
| 1934 | 18 |
| 1935 | 20 |
| 1936 | 5 |
| 1937 | 12 |
| 1938 | 13 |
| 1939 | 11 |
| 1940 | 13 |
| 1941 | 18 |
| 1942 | 19 |
| 1943 | 16 |
| 1944 | 10 |
| 1945 | 11 |
| 1946 | 18 |
| 1947 | 9 |
| 1948 | 17 |
| 1949 | 10 |
| 1950 | 13 |
| 1951 | 7 |
| 1952 | 16 |
| 1953 | 13 |
| 1954 | 13 |
| 1955 | 10 |
| 1957 | 8 |
| 1958 | 12 |
| 1959 | 5 |
| 1960 | 15 |
| 1961 | 16 |
| 1962 | 17 |
| 1963 | 9 |
| 1964 | 16 |
| 1965 | 5 |
| 1966 | 14 |
| 1967 | 10 |
| 1968 | 16 |
| 1969 | 11 |
| 1970 | 8 |
| 1971 | 6 |
| 1972 | 15 |
| 1973 | 9 |
| 1974 | 17 |
| 1975 | 11 |
| 1976 | 13 |
| 1977 | 12 |
| 1978 | 6 |
| 1979 | 6 |
| 1980 | 9 |
| 1981 | 5 |
| 1983 | 14 |
| 1985 | 5 |
| 1986 | 6 |
| 1987 | 6 |
| 1988 | 12 |
| 1989 | 10 |
| 1990 | 14 |
| 1991 | 9 |
| 1992 | 8 |
| 1993 | 8 |
| 1994 | 7 |
| 1995 | 15 |
| 1998 | 7 |
| 1999 | 5 |
| 2001 | 14 |
| 2005 | 5 |
| 2006 | 5 |
| 2008 | 5 |
| 2009 | 7 |
| 2011 | 5 |
| 2012 | 7 |
| 2015 | 10 |
| 2016 | 19 |
| 2019 | 6 |
| 2022 | 24 |
| 2023 | 7 |