Total babies named Brennan (all years): 35,250
| Year | Boys (count / rank / %) |
|---|---|
| 2024 | 207 / #1054 / 0.012% |
| 2023 | 213 / #1023 / 0.012% |
| 2022 | 224 / #995 / 0.013% |
| 2021 | 265 / #872 / 0.015% |
| 2020 | 315 / #764 / 0.018% |
| 2019 | 340 / #719 / 0.019% |
| 2018 | 382 / #661 / 0.021% |
| 2017 | 464 / #585 / 0.025% |
| 2016 | 549 / #534 / 0.029% |
| 2015 | 690 / #444 / 0.036% |
| Year | Boys (count / rank / %) |
|---|---|
| 2014 | 806 / #387 / 0.042% |
| 2013 | 927 / #345 / 0.049% |
| 2012 | 1,011 / #318 / 0.053% |
| 2011 | 1,177 / #293 / 0.062% |
| 2010 | 1,279 / #270 / 0.067% |
| 2009 | 1,464 / #242 / 0.074% |
| 2008 | 1,316 / #263 / 0.065% |
| 2007 | 1,207 / #286 / 0.058% |
| 2006 | 1,116 / #299 / 0.054% |
| 2005 | 1,054 / #312 / 0.053% |
| Year | Boys (count / rank / %) |
|---|---|
| 2004 | 1,061 / #300 / 0.053% |
| 2003 | 1,127 / #276 / 0.057% |
| 2002 | 1,121 / #273 / 0.058% |
| 2001 | 1,121 / #274 / 0.058% |
| 2000 | 1,158 / #276 / 0.059% |
| 1999 | 1,106 / #270 / 0.058% |
| 1998 | 1,051 / #274 / 0.055% |
| 1997 | 967 / #288 / 0.051% |
| 1996 | 895 / #297 / 0.047% |
| 1995 | 916 / #288 / 0.048% |
| Year | Boys (count / rank / %) |
|---|---|
| 1994 | 756 / #329 / 0.039% |
| 1993 | 663 / #356 / 0.034% |
| 1992 | 642 / #368 / 0.032% |
| 1991 | 698 / #346 / 0.035% |
| 1990 | 606 / #384 / 0.030% |
| 1989 | 445 / #446 / 0.022% |
| 1988 | 460 / #422 / 0.024% |
| 1987 | 422 / #428 / 0.023% |
| 1986 | 292 / #520 / 0.016% |
| 1985 | 253 / #553 / 0.014% |
| Year | Boys (count / rank / %) |
|---|---|
| 1984 | 232 / #562 / 0.013% |
| 1983 | 182 / #634 / 0.010% |
| 1982 | 152 / #706 / 0.008% |
| 1981 | 139 / #735 / 0.008% |
| 1980 | 142 / #736 / 0.008% |
| 1979 | 136 / #741 / 0.008% |
| 1978 | 123 / #760 / 0.007% |
| 1977 | 108 / #819 / 0.007% |
| 1976 | 99 / #838 / 0.006% |
| 1975 | 102 / #823 / 0.007% |
| Year | Boys (count / rank / %) |
|---|---|
| 1974 | 89 / #850 / 0.006% |
| 1973 | 69 / #973 / 0.004% |
| 1972 | 57 / #1069 / 0.004% |
| 1971 | 78 / #921 / 0.004% |
| 1970 | 73 / #932 / 0.004% |
| 1969 | 66 / #945 / 0.004% |
| 1968 | 58 / #959 / 0.003% |
| 1967 | 53 / #994 / 0.003% |
| 1966 | 53 / #999 / 0.003% |
| 1965 | 36 / #1276 / 0.002% |
| Year | Boys (count / rank / %) |
|---|---|
| 1964 | 30 / #1436 / 0.002% |
| 1963 | 32 / #1377 / 0.002% |
| 1962 | 24 / #1629 / 0.001% |
| 1961 | 25 / #1605 / 0.001% |
| 1960 | 17 / #1976 / 0.001% |
| 1959 | 11 / #2551 / 0.001% |
| 1958 | 14 / #2185 / 0.001% |
| 1957 | 9 / #2844 / 0.000% |
| 1956 | 11 / #2515 / 0.001% |
| 1955 | 10 / #2589 / 0.000% |
| Year | Boys (count / rank / %) |
|---|---|
| 1954 | 8 / #2975 / 0.000% |
| 1953 | 6 / #3468 / 0.000% |
| 1951 | 5 / #3776 / 0.000% |
| 1950 | 6 / #3364 / 0.000% |
| 1949 | 6 / #3348 / 0.000% |
| 1916 | 5 / #3973 / 0.001% |