Isak
Isak was given to 38 boys in 2025, #3,153 among boys’ names; 1,107 Americans have been recorded with it since 1979 (Social Security Administration, published May 2026).
An estimated 1,090 Americans named Isak and born in the U.S. are alive in 2026 (98% of everyone recorded); the median is 19 years old and half are between 11 and 24.
Girls and boys together; gaps are years SSA did not record (fewer than 5 births).
Births of Isak by year: SSA national baby-name file, 1880-2025, published May 8, 2026. SSA’s notes on the data.
What does Isak mean?
Wiktionary, Swedish section
Isak is “a male given name”
Meaning: Wiktionary, Swedish section, as of Sep 25, 2026 (CC BY‑SA 4.0).
How popular is Isak?
#3,153 among boys’ names, 2025
Isak rose from #3,316 in 2015 to #3,153 in 2025 among boys’ names; its share of boys born rose from 17.7 to 22.2 per million.
57 babies in 2004, the peak
Isak peaked in 2004, when 57 boys were given it, #2,080 among boys’ names. The 38 births of 2025 are 67% of that peak.
| Year | Births | Rank | Per million boys |
|---|---|---|---|
| 2025 | 38 | #3,153 | 22.2 |
| 2024 | 26 | #4,120 | 15.1 |
| 2023 | 29 | #3,831 | 17.0 |
| 2022 | 14 | #6,276 | 8.0 |
| 2021 | 23 | #4,418 | 13.1 |
| 2020 | 24 | #4,191 | 13.9 |
| 2019 | 18 | #5,233 | 10.0 |
| 2018 | 31 | #3,562 | 17.1 |
| 2017 | 34 | #3,336 | 18.4 |
| 2016 | 26 | #4,039 | 13.7 |
Every recorded year (43)
| Year | Births | Rank | Per million boys |
|---|---|---|---|
| 2015 | 34 | #3,316 | 17.7 |
| 2014 | 27 | #3,832 | 14.1 |
| 2013 | 17 | #5,255 | 9.0 |
| 2012 | 31 | #3,473 | 16.3 |
| 2011 | 30 | #3,544 | 15.8 |
| 2010 | 51 | #2,444 | 26.6 |
| 2009 | 37 | #3,128 | 18.7 |
| 2008 | 42 | #2,849 | 20.6 |
| 2007 | 52 | #2,458 | 25.1 |
| 2006 | 57 | #2,230 | 27.7 |
| 2005 | 55 | #2,191 | 27.5 |
| 2004 | 57 | #2,080 | 28.7 |
| 2003 | 39 | #2,590 | 19.7 |
| 2002 | 39 | #2,522 | 20.1 |
| 2001 | 26 | #3,348 | 13.4 |
| 2000 | 29 | #3,017 | 14.8 |
| 1999 | 28 | #2,965 | 14.6 |
| 1998 | 20 | #3,630 | 10.5 |
| 1997 | 26 | #2,927 | 13.8 |
| 1996 | 25 | #2,961 | 13.2 |
| 1995 | 21 | #3,231 | 11.0 |
| 1994 | 18 | #3,654 | 9.3 |
| 1993 | 12 | #4,816 | 6.1 |
| 1992 | 7 | #6,954 | 3.5 |
| 1991 | 11 | #4,893 | 5.4 |
| 1990 | 7 | #6,707 | 3.4 |
| 1989 | 5 | #8,387 | 2.5 |
| 1988 | 10 | #4,565 | 5.2 |
| 1987 | 7 | #5,721 | 3.7 |
| 1986 | 8 | #5,049 | 4.3 |
| 1983 | 5 | #6,672 | 2.8 |
| 1980 | 5 | #6,647 | 2.8 |
| 1979 | 6 | #5,642 | 3.5 |
Ranks and shares: boys’ names in each year’s SSA file; share of all boys SSA recorded that year.
Is Isak a boy’s or a girl’s name?
Isak has been recorded only for boys: SSA lists no girls with the name in 43 years of records (it lists a name only in years with 5 or more babies of a sex).
Girls and boys named Isak: the SSA national file counts each sex separately.
How many people are named Isak, and how old are they?
1,090 alive in 2026, estimated
That is 98% of the 1,107 Americans ever recorded as Isak. The median Isak alive today is 19 years old; half are between 11 and 24.
The 2020 Census counted 1,319 people named Isak (11 women and girls, 1,308 men and boys). SSA’s births carried forward to Census day, April 1, 2020, predict 946 born in the U.S. The Census count is 39% above that prediction. Possible reasons: the Census counts people born abroad, whom SSA’s files leave out, and it records the name people give, which SSA may have recorded under another spelling or as part of a compound name.
Alive today, by age
Alive today, by generation
| Generation | Born | Alive |
|---|---|---|
| Generation X | 1965-1980 | 10 |
| Millennials | 1981-1996 | 130 |
| Generation Z | 1997-2012 | 609 |
| Generation Alpha | 2013-2025 | 339 |
An estimate, not a count. SSA’s files count people born in the United States who received a Social Security number, so anyone born abroad is not in them; before 1937 most people got a number as adults, and their survival is counted from that age.
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).
How common is the spelling Isak?
Isak is a less common spelling of Isaac: SSA has recorded 1,107 Isak and 332,292 Isaac since 1880.
Of these 8 names spelled alike, given to 368,096 babies since 1880, Isak is the sixth most given (<1% of them). In 2025 it was given to 38 of their 6,344 babies (<1%), the fourth most given that year.
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 Isak
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 Isak and names like it
- Compare Isak and IsaacBirths, ranks, peak and the living estimate side by side.
- The most given names of the 2000sIsak peaked in 2004.
- California’s most given namesThe state where SSA recorded the most babies named Isak since 1910.
- Swedish namesWiktionary’s origin for Isak: every such name, by how often it is given.
- The top names of 2004The year the most babies were named Isak.
- The names of Generation ZMost people named Isak alive today were born 1997-2012.
- Names starting with IMost given first.