Total babies named Obrien (all years): 209
| Year | Boys (count / rank / %) |
|---|---|
| 2022 | 7 / #10558 / 0.000% |
| 2019 | 7 / #10500 / 0.000% |
| 2015 | 8 / #9334 / 0.000% |
| 2012 | 6 / #11858 / 0.000% |
| 2009 | 7 / #10666 / 0.000% |
| 2006 | 8 / #9328 / 0.000% |
| 2005 | 11 / #6983 / 0.001% |
| 2004 | 5 / #12697 / 0.000% |
| 2000 | 6 / #9974 / 0.000% |
| 1995 | 6 / #8576 / 0.000% |
| Year | Boys (count / rank / %) |
|---|---|
| 1994 | 11 / #5355 / 0.001% |
| 1993 | 8 / #6657 / 0.000% |
| 1992 | 14 / #4267 / 0.001% |
| 1991 | 16 / #3768 / 0.001% |
| 1990 | 7 / #6956 / 0.000% |
| 1989 | 12 / #4445 / 0.001% |
| 1988 | 13 / #3839 / 0.001% |
| 1987 | 12 / #3899 / 0.001% |
| 1986 | 9 / #4736 / 0.000% |
| 1985 | 9 / #4586 / 0.000% |
| Year | Boys (count / rank / %) |
|---|---|
| 1984 | 11 / #3862 / 0.001% |
| 1977 | 5 / #6561 / 0.000% |
| 1958 | 6 / #3814 / 0.000% |
| 1921 | 5 / #4796 / 0.000% |