Semaj is an uncommon name used for both girls and boys that peaked in 2009 and has grown less common since.
Semaj is predominantly a boy name. In 2025 it ranked #1,027 among boys (217) and #6,515 among girls (18) — overall #1,996 across all names. The charts below show girls and boys separately.
| Year | U.S. births | U.S. + territories | ♀ Rank | ♂ Rank |
|---|---|---|---|---|
| 2025 | 235 | 235 | #6,515 | #1,027 |
| 2024 | 224 | 224 | #6,363 | #1,066 |
| 2023 | 286 | 286 | #4,726 | #908 |
| 2022 | 199 | 199 | #3,820 | #1,241 |
| 2021 | 208 | 208 | #4,004 | #1,163 |
| 2020 | 195 | 195 | #4,983 | #1,152 |
| 2019 | 225 | 225 | #3,778 | #1,084 |
| 2018 | 224 | 224 | #3,730 | #1,085 |
| 2017 | 255 | 255 | #2,832 | #1,035 |
| 2016 | 246 | 246 | #3,050 | #1,041 |
| 2015 | 259 | 259 | #2,995 | #1,015 |
| 2014 | 278 | 278 | #3,000 | #956 |
| 2013 | 310 | 310 | #2,897 | #854 |
| 2012 | 387 | 387 | #2,092 | #771 |
| 2011 | 469 | 469 | #2,056 | #627 |
| 2010 | 467 | 467 | #1,816 | #675 |
| 2009 | 495 | 495 | #1,685 | #672 |
| 2008 | 447 | 447 | #1,946 | #698 |
| 2007 | 422 | 422 | #1,876 | #735 |
| 2006 | 416 | 416 | #2,047 | #696 |
| 2005 | 391 | 391 | #1,964 | #702 |
| 2004 | 332 | 332 | #2,258 | #738 |
| 2003 | 312 | 312 | #2,143 | #768 |
| 2002 | 297 | 297 | #2,407 | #755 |
| 2001 | 313 | 313 | #2,433 | #712 |
| 2000 | 195 | 195 | #2,770 | #1,033 |
| 1999 | 192 | 192 | #3,494 | #939 |
| 1998 | 165 | 165 | #3,006 | #1,075 |
| 1997 | 114 | — | #4,105 | #1,320 |
| 1996 | 135 | — | #3,555 | #1,154 |
| 1995 | 106 | — | #3,759 | #1,348 |
| 1994 | 86 | — | #4,984 | #1,468 |
| 1993 | 97 | — | #4,359 | #1,339 |
| 1992 | 71 | — | #5,223 | #1,676 |
| 1991 | 58 | — | #5,351 | #1,947 |
| 1990 | 68 | — | #9,091 | #1,483 |
| 1989 | 53 | — | #9,486 | #1,731 |
| 1988 | 22 | — | #11,474 | #3,323 |
| 1987 | 18 | — | #12,833 | #3,692 |
| 1986 | 23 | — | #10,600 | #2,987 |
| 1985 | 11 | — | — | #4,004 |
| 1984 | 8 | — | #7,992 | — |
| 1983 | 9 | — | — | #4,437 |
| 1982 | 21 | — | #11,908 | #2,954 |
| 1981 | 10 | — | — | #4,102 |
| 1980 | 14 | — | — | #3,224 |
| 1979 | 14 | — | — | #3,139 |
| 1978 | 10 | — | — | #3,808 |
| 1977 | 13 | — | #10,916 | #4,507 |
| 1976 | 14 | — | — | #2,929 |
| 1975 | 10 | — | — | #3,624 |
| 1974 | 17 | — | #9,900 | #3,092 |
| 1972 | 8 | — | — | #3,912 |
| 1971 | 5 | — | — | #5,534 |