Isaia is a rare variant of Isaiah that peaked in 2007 and has grown less common since.
Isaia is a boy name. In 2025 it ranked #10,077 for boy births in the United States (and #20,811 across all names), given to 7 babies. Isaia first appears in 1985 and peaked in 2007 (26 births).
| Year | U.S. births | U.S. + territories | Rank |
|---|---|---|---|
| 2025 | 7 | 7 | #10,077 |
| 2024 | 8 | 8 | #9,343 |
| 2023 | 18 | 18 | #5,327 |
| 2022 | 12 | 12 | #6,982 |
| 2021 | 6 | 6 | #11,285 |
| 2020 | 10 | 10 | #7,731 |
| 2019 | 11 | 11 | #7,345 |
| 2018 | 10 | 10 | #7,819 |
| 2017 | 10 | 10 | #7,798 |
| 2016 | 8 | 8 | #9,183 |
| 2015 | 17 | 17 | #5,375 |
| 2014 | 6 | 6 | #11,253 |
| 2013 | 14 | 14 | #6,036 |
| 2012 | 7 | 7 | #10,124 |
| 2011 | 22 | 22 | #4,419 |
| 2010 | 18 | 18 | #5,119 |
| 2009 | 16 | 16 | #5,656 |
| 2008 | 17 | 17 | #5,332 |
| 2007 | 26 | 26 | #3,938 |
| 2006 | 22 | 22 | #4,286 |
| 2005 | 22 | 22 | #4,113 |
| 2004 | 16 | 16 | #5,098 |
| 2003 | 17 | 17 | #4,684 |
| 2002 | 19 | 19 | #4,236 |
| 2001 | 20 | 20 | #4,026 |
| 2000 | 13 | 13 | #5,396 |
| 1999 | 25 | 25 | #3,219 |
| 1998 | 17 | 17 | #4,083 |
| 1997 | 20 | — | #3,509 |
| 1996 | 14 | — | #4,480 |
| 1995 | 9 | — | #6,110 |
| 1993 | 8 | — | #6,447 |
| 1991 | 9 | — | #5,685 |
| 1985 | 6 | — | #6,084 |