Isaia
Isaia was given to 7 boys in 2025, #10,073 among boys’ names; 480 Americans have been recorded with it since 1985 (Social Security Administration, published May 2026).
Girls and boys together; gaps are years SSA did not record (fewer than 5 births).
Births of Isaia by year: SSA national baby-name file, 1880-2025, published May 8, 2026. SSA’s notes on the data.
What does Isaia mean?
Wiktionary, Italian section
Isaia is “a male given name”
From Ancient Greek Ἠσαΐας (Ēsaḯas) from Hebrew יְשַׁעְיָהוּ (yəšaʿyā́hū).
Meaning: Wiktionary, Italian section, as of Sep 25, 2026 (CC BY‑SA 4.0).
How popular is Isaia?
#10,073 among boys’ names, 2025
Isaia fell from #5,371 in 2015 to #10,073 in 2025 among boys’ names; its share of boys born fell from 8.9 to 4.1 per million.
26 babies in 2007, the peak
Isaia peaked in 2007, when 26 boys were given it, #3,936 among boys’ names. The 7 births of 2025 are 27% of that peak.
| Year | Births | Rank | Per million boys |
|---|---|---|---|
| 2025 | 7 | #10,073 | 4.1 |
| 2024 | 8 | #9,338 | 4.6 |
| 2023 | 18 | #5,322 | 10.5 |
| 2022 | 12 | #6,977 | 6.9 |
| 2021 | 6 | #11,279 | 3.4 |
| 2020 | 10 | #7,726 | 5.8 |
| 2019 | 11 | #7,340 | 6.1 |
| 2018 | 10 | #7,815 | 5.5 |
| 2017 | 10 | #7,794 | 5.4 |
| 2016 | 8 | #9,178 | 4.2 |
Every recorded year (34)
| Year | Births | Rank | Per million boys |
|---|---|---|---|
| 2015 | 17 | #5,371 | 8.9 |
| 2014 | 6 | #11,247 | 3.1 |
| 2013 | 14 | #6,031 | 7.4 |
| 2012 | 7 | #10,118 | 3.7 |
| 2011 | 22 | #4,417 | 11.6 |
| 2010 | 18 | #5,116 | 9.4 |
| 2009 | 16 | #5,652 | 8.1 |
| 2008 | 17 | #5,327 | 8.3 |
| 2007 | 26 | #3,936 | 12.5 |
| 2006 | 22 | #4,282 | 10.7 |
| 2005 | 22 | #4,108 | 11.0 |
| 2004 | 16 | #5,093 | 8.1 |
| 2003 | 17 | #4,679 | 8.6 |
| 2002 | 19 | #4,230 | 9.8 |
| 2001 | 20 | #4,020 | 10.3 |
| 2000 | 13 | #5,388 | 6.6 |
| 1999 | 25 | #3,215 | 13.0 |
| 1998 | 17 | #4,079 | 8.9 |
| 1997 | 20 | #3,504 | 10.6 |
| 1996 | 14 | #4,474 | 7.4 |
| 1995 | 9 | #6,104 | 4.7 |
| 1993 | 8 | #6,441 | 4.1 |
| 1991 | 9 | #5,678 | 4.5 |
| 1985 | 6 | #6,079 | 3.2 |
Ranks and shares: boys’ names in each year’s SSA file; share of all boys SSA recorded that year.
Is Isaia a boy’s or a girl’s name?
Isaia has been recorded only for boys: SSA lists no girls with the name in 34 years of records (it lists a name only in years with 5 or more babies of a sex).
Girls and boys named Isaia: the SSA national file counts each sex separately.
How many people are named Isaia, and how old are they?
An estimated 472 Americans named Isaia and born in the U.S. are alive in 2026 (98% of everyone recorded); the median is 19 years old and half are between 12 and 25. An estimate from SSA’s births and life tables, not a count.
The 2020 Census counted 757 people named Isaia (22 women and girls, 735 men and boys). SSA’s births carried forward to Census day, April 1, 2020, predict 416 born in the U.S. The Census count is 1.8 times that prediction. Possible reasons: the Census records the name people give, which for many is the short form Isaia rather than the name on their birth record, and it counts people born abroad, whom SSA’s files leave out.
Living estimate: SSA births carried forward with the survival rates in SSA’s cohort life tables (2024 Trustees Report) for each birth year and sex. How the estimate is made. Count: Census Bureau, first names in the 2020 Census (released April 14, 2026; names reported 100 or more times, with the Bureau’s disclosure-avoidance adjustment).
Names spelled alike
Of these 8 names spelled alike, given to 294,216 babies since 1880, Isaia is the eighth most given (<1% of them). In 2025 it was given to 7 of their 5,780 babies (<1%), again the eighth most given.
Spelled alike: names in the SSA national file with the same pattern of letters and sounds and at most two letters apart, and Wiktionary’s listed forms; births since 1880 and in 2025, and each name’s peak year, from the SSA national file, published May 8, 2026. Some are separate names, not spellings of one.
Names that rose and fell in the same decades as Isaia
Names whose births rose and fell across the same decades, measured on each decade’s share of births.
Similar histories: each decade’s share of births, from the SSA national file, 1880-2025, published May 8, 2026. SSA’s notes on the data.
More about Isaia and names like it
- Compare Isaia and IsaiahBirths, ranks, peak and the living estimate side by side.
- The most given names of the 2000sIsaia peaked in 2007.
- California’s most given namesThe state where SSA recorded the most babies named Isaia since 1910.
- Italian namesWiktionary’s origin for Isaia: every such name, by how often it is given.
- The top names of 2007The year the most babies were named Isaia.
- The names of Generation ZMost people named Isaia alive today were born 1997-2012.
- Names starting with IMost given first.