Isiah is an established boys' name that peaked in 2001 and has since faded.
Isiah is predominantly a boy name. In 2025 it ranked #1,480 for boy births in the United States (and #3,136 across all names), given to 120 babies. Isiah first appears in 1880 and peaked in 2001 (822 births).
| Year | U.S. births | U.S. + territories | ♀ Rank | ♂ Rank |
|---|---|---|---|---|
| 2025 | 120 | 120 | — | #1,480 |
| 2024 | 149 | 149 | — | #1,309 |
| 2023 | 132 | 132 | — | #1,397 |
| 2022 | 141 | 141 | — | #1,332 |
| 2021 | 138 | 138 | — | #1,343 |
| 2020 | 131 | 131 | — | #1,357 |
| 2019 | 157 | 157 | — | #1,214 |
| 2018 | 169 | 169 | — | #1,139 |
| 2017 | 170 | 170 | — | #1,127 |
| 2016 | 197 | 197 | — | #1,020 |
| 2015 | 179 | 179 | — | #1,090 |
| 2014 | 187 | 187 | — | #1,060 |
| 2013 | 266 | 266 | — | #816 |
| 2012 | 293 | 293 | — | #776 |
| 2011 | 366 | 366 | — | #639 |
| 2010 | 424 | 424 | — | #589 |
| 2009 | 497 | 497 | — | #535 |
| 2008 | 635 | 635 | — | #443 |
| 2007 | 627 | 627 | — | #446 |
| 2006 | 730 | 730 | — | #405 |
| 2005 | 742 | 742 | — | #387 |
| 2004 | 712 | 712 | — | #383 |
| 2003 | 739 | 739 | #16,712 | #364 |
| 2002 | 746 | 746 | — | #357 |
| 2001 | 822 | 822 | — | #336 |
| 2000 | 797 | 797 | — | #343 |
| 1999 | 781 | 781 | — | #341 |
| 1998 | 768 | 768 | — | #348 |
| 1997 | 741 | — | — | #346 |
| 1996 | 664 | — | #12,413 | #365 |
| 1995 | 488 | — | — | #463 |
| 1994 | 360 | — | — | #540 |
| 1993 | 323 | — | — | #570 |
| 1992 | 392 | — | — | #513 |
| 1991 | 449 | — | — | #467 |
| 1990 | 511 | — | — | #433 |
| 1989 | 409 | — | — | #465 |
| 1988 | 302 | — | — | #526 |
| 1987 | 205 | — | — | #640 |
| 1986 | 107 | — | — | #878 |
| 1985 | 130 | — | — | #779 |
| 1984 | 120 | — | — | #798 |
| 1983 | 104 | — | — | #860 |
| 1982 | 114 | — | — | #831 |
| 1981 | 98 | — | — | #903 |
| 1980 | 64 | — | — | #1,141 |
| 1979 | 59 | — | — | #1,182 |
| 1978 | 61 | — | — | #1,125 |
| 1977 | 57 | — | — | #1,165 |
| 1976 | 57 | — | — | #1,132 |
| 1975 | 59 | — | — | #1,095 |
| 1974 | 51 | — | — | #1,159 |
| 1973 | 53 | — | — | #1,131 |
| 1972 | 52 | — | — | #1,132 |
| 1971 | 47 | — | — | #1,206 |
| 1970 | 45 | — | — | #1,244 |
| 1969 | 56 | — | — | #1,034 |
| 1968 | 64 | — | — | #904 |
| 1967 | 77 | — | — | #820 |
| 1966 | 70 | — | — | #872 |
| 1965 | 52 | — | — | #1,026 |
| 1964 | 90 | — | — | #793 |
| 1963 | 65 | — | — | #933 |
| 1962 | 72 | — | — | #898 |
| 1961 | 77 | — | — | #870 |
| 1960 | 64 | — | — | #947 |
| 1959 | 101 | — | — | #757 |
| 1958 | 105 | — | — | #728 |
| 1957 | 100 | — | — | #753 |
| 1956 | 87 | — | — | #800 |
| 1955 | 109 | — | — | #701 |
| 1954 | 100 | — | — | #724 |
| 1953 | 99 | — | — | #718 |
| 1952 | 109 | — | — | #665 |
| 1951 | 102 | — | — | #694 |
| 1950 | 97 | — | — | #698 |
| 1949 | 114 | — | — | #640 |
| 1948 | 125 | — | — | #609 |
| 1947 | 113 | — | — | #649 |
| 1946 | 117 | — | — | #596 |
| 1945 | 84 | — | — | #659 |
| 1944 | 118 | — | — | #561 |
| 1943 | 105 | — | — | #615 |
| 1942 | 98 | — | — | #642 |
| 1941 | 99 | — | — | #599 |
| 1940 | 83 | — | — | #668 |
| 1939 | 102 | — | — | #568 |
| 1938 | 95 | — | — | #610 |
| 1937 | 85 | — | — | #644 |
| 1936 | 100 | — | — | #579 |
| 1935 | 88 | — | — | #627 |
| 1934 | 79 | — | — | #687 |
| 1933 | 96 | — | — | #595 |
| 1932 | 108 | — | — | #572 |
| 1931 | 108 | — | — | #566 |
| 1930 | 103 | — | — | #602 |
| 1929 | 123 | — | — | #525 |
| 1928 | 121 | — | — | #556 |
| 1927 | 110 | — | — | #591 |
| 1926 | 130 | — | — | #536 |
| 1925 | 129 | — | — | #541 |
| 1924 | 138 | — | — | #541 |
| 1923 | 140 | — | — | #514 |
| 1922 | 138 | — | — | #534 |
| 1921 | 118 | — | — | #584 |
| 1920 | 123 | — | — | #555 |
| 1919 | 145 | — | — | #495 |
| 1918 | 130 | — | — | #532 |
| 1917 | 98 | — | — | #600 |
| 1916 | 81 | — | — | #654 |
| 1915 | 96 | — | — | #581 |
| 1914 | 101 | — | — | #483 |
| 1913 | 56 | — | — | #588 |
| 1912 | 79 | — | — | #441 |
| 1911 | 52 | — | — | #398 |
| 1910 | 56 | — | — | #330 |
| 1909 | 48 | — | — | #337 |
| 1908 | 39 | — | — | #370 |
| 1907 | 39 | — | — | #355 |
| 1906 | 29 | — | — | #403 |
| 1905 | 35 | — | — | #349 |
| 1904 | 28 | — | — | #397 |
| 1903 | 31 | — | — | #348 |
| 1902 | 28 | — | — | #375 |
| 1901 | 19 | — | — | #445 |
| 1900 | 44 | — | — | #321 |
| 1899 | 21 | — | — | #408 |
| 1898 | 29 | — | — | #361 |
| 1897 | 27 | — | — | #363 |
| 1896 | 31 | — | — | #345 |
| 1895 | 35 | — | — | #305 |
| 1894 | 43 | — | — | #268 |
| 1893 | 31 | — | — | #314 |
| 1892 | 37 | — | — | #307 |
| 1891 | 27 | — | — | #329 |
| 1890 | 32 | — | — | #306 |
| 1889 | 16 | — | — | #474 |
| 1888 | 35 | — | — | #305 |
| 1887 | 32 | — | — | #295 |
| 1886 | 22 | — | — | #374 |
| 1885 | 26 | — | — | #335 |
| 1884 | 24 | — | — | #365 |
| 1883 | 24 | — | — | #343 |
| 1882 | 28 | — | — | #325 |
| 1881 | 24 | — | — | #338 |
| 1880 | 20 | — | — | #385 |