Isac
Isac was given to 22 boys in 2025, #4,599 among boys’ names; 3,203 Americans have been recorded with it since 1884 (Social Security Administration, published May 2026).
An estimated 2,730 Americans named Isac and born in the U.S. are alive in 2026 (85% of everyone recorded); the median is 21 years old and half are between 16 and 28.
Girls and boys together; gaps are years SSA did not record (fewer than 5 births).
Births of Isac by year: SSA national baby-name file, 1880-2025, published May 8, 2026. SSA’s notes on the data.
What does Isac mean?
Wiktionary, Swedish section
Isac is “a male given name”
A less common spelling of Isak.
Meaning: Wiktionary, Swedish section, as of Sep 25, 2026 (CC BY‑SA 4.0).
How popular is Isac?
#4,599 among boys’ names, 2025
Isac fell from #2,825 in 2015 to #4,599 in 2025 among boys’ names; its share of boys born fell from 21.9 to 12.9 per million.
148 babies in 2006, the peak
Isac peaked in 2006, when 148 boys were given it, #1,147 among boys’ names. The 22 births of 2025 are 15% of that peak.
| Year | Births | Rank | Per million boys |
|---|---|---|---|
| 2025 | 22 | #4,599 | 12.9 |
| 2024 | 26 | #4,119 | 15.1 |
| 2023 | 19 | #5,131 | 11.1 |
| 2022 | 30 | #3,721 | 17.2 |
| 2021 | 33 | #3,448 | 18.9 |
| 2020 | 28 | #3,754 | 16.2 |
| 2019 | 27 | #3,935 | 15.0 |
| 2018 | 26 | #4,034 | 14.3 |
| 2017 | 39 | #3,031 | 21.1 |
| 2016 | 39 | #3,026 | 20.6 |
Every recorded year (102)
| Year | Births | Rank | Per million boys |
|---|---|---|---|
| 2015 | 42 | #2,825 | 21.9 |
| 2014 | 62 | #2,185 | 32.3 |
| 2013 | 75 | #1,885 | 39.6 |
| 2012 | 73 | #1,951 | 38.5 |
| 2011 | 92 | #1,648 | 48.4 |
| 2010 | 102 | #1,560 | 53.2 |
| 2009 | 111 | #1,502 | 56.0 |
| 2008 | 123 | #1,383 | 60.3 |
| 2007 | 138 | #1,275 | 66.5 |
| 2006 | 148 | #1,147 | 72.0 |
| 2005 | 142 | #1,139 | 71.1 |
| 2004 | 126 | #1,209 | 63.5 |
| 2003 | 127 | #1,177 | 64.3 |
| 2002 | 96 | #1,370 | 49.4 |
| 2001 | 120 | #1,149 | 61.8 |
| 2000 | 79 | #1,521 | 40.2 |
| 1999 | 88 | #1,356 | 45.8 |
| 1998 | 81 | #1,408 | 42.4 |
| 1997 | 68 | #1,523 | 36.1 |
| 1996 | 62 | #1,588 | 32.7 |
| 1995 | 56 | #1,630 | 29.4 |
| 1994 | 48 | #1,800 | 24.8 |
| 1993 | 38 | #2,102 | 19.4 |
| 1992 | 39 | #2,012 | 19.5 |
| 1991 | 31 | #2,308 | 15.3 |
| 1990 | 32 | #2,228 | 15.6 |
| 1989 | 21 | #2,934 | 10.5 |
| 1988 | 22 | #2,637 | 11.5 |
| 1987 | 20 | #2,666 | 10.7 |
| 1986 | 18 | #2,824 | 9.8 |
| 1985 | 21 | #2,456 | 11.4 |
| 1984 | 15 | #3,016 | 8.3 |
| 1983 | 17 | #2,716 | 9.5 |
| 1982 | 20 | #2,462 | 11.0 |
| 1981 | 18 | #2,615 | 10.0 |
| 1980 | 20 | #2,477 | 11.2 |
| 1979 | 7 | #5,046 | 4.1 |
| 1978 | 8 | #4,311 | 4.9 |
| 1977 | 9 | #3,964 | 5.5 |
| 1976 | 10 | #3,583 | 6.4 |
| 1975 | 6 | #5,059 | 3.8 |
| 1974 | 7 | #4,348 | 4.5 |
| 1973 | 9 | #3,551 | 5.8 |
| 1971 | 5 | #5,233 | 2.8 |
| 1968 | 5 | #4,387 | 2.9 |
| 1966 | 5 | #4,203 | 2.8 |
| 1965 | 6 | #3,697 | 3.2 |
| 1962 | 5 | #4,309 | 2.4 |
| 1956 | 7 | #3,346 | 3.3 |
| 1950 | 5 | #3,920 | 2.8 |
| 1947 | 5 | #3,980 | 2.7 |
| 1943 | 7 | #3,082 | 4.9 |
| 1942 | 5 | #3,803 | 3.6 |
| 1941 | 5 | #3,748 | 4.1 |
| 1939 | 5 | #3,715 | 4.5 |
| 1938 | 7 | #3,009 | 6.3 |
| 1937 | 7 | #3,039 | 6.6 |
| 1936 | 6 | #3,337 | 5.8 |
| 1935 | 12 | #2,186 | 11.5 |
| 1933 | 8 | #2,857 | 8.1 |
| 1932 | 13 | #2,145 | 12.5 |
| 1931 | 12 | #2,262 | 11.5 |
| 1930 | 11 | #2,518 | 10.0 |
| 1929 | 19 | #1,756 | 17.7 |
| 1928 | 15 | #2,099 | 13.5 |
| 1927 | 14 | #2,237 | 12.4 |
| 1926 | 13 | #2,359 | 11.7 |
| 1925 | 13 | #2,363 | 11.6 |
| 1924 | 12 | #2,547 | 10.6 |
| 1923 | 12 | #2,518 | 10.9 |
| 1922 | 14 | #2,287 | 12.9 |
| 1921 | 20 | #1,797 | 18.2 |
| 1920 | 13 | #2,390 | 12.2 |
| 1919 | 16 | #2,015 | 16.3 |
| 1918 | 19 | #1,789 | 18.7 |
| 1917 | 14 | #2,132 | 15.1 |
| 1916 | 17 | #1,807 | 19.1 |
| 1915 | 21 | #1,531 | 24.7 |
| 1914 | 11 | #2,035 | 16.8 |
| 1913 | 10 | #1,872 | 19.5 |
| 1912 | 9 | #1,814 | 20.9 |
| 1911 | 5 | #1,869 | 22.1 |
| 1910 | 10 | #1,078 | 51.5 |
| 1909 | 5 | #1,569 | 30.5 |
| 1908 | 7 | #1,158 | 45.4 |
| 1906 | 6 | #1,184 | 45.1 |
| 1905 | 5 | #1,323 | 37.8 |
| 1903 | 5 | #1,205 | 41.9 |
| 1902 | 5 | #1,217 | 40.8 |
| 1899 | 5 | #1,126 | 47.1 |
| 1892 | 6 | #1,015 | 49.2 |
| 1884 | 5 | #1,046 | 43.7 |
Ranks and shares: boys’ names in each year’s SSA file; share of all boys SSA recorded that year.
Is Isac a boy’s or a girl’s name?
Isac has been recorded only for boys: SSA lists no girls with the name in 102 years of records (it lists a name only in years with 5 or more babies of a sex).
Girls and boys named Isac: the SSA national file counts each sex separately.
How many people are named Isac, and how old are they?
2,730 alive in 2026, estimated
That is 85% of the 3,203 Americans ever recorded as Isac. The median Isac alive today is 21 years old; half are between 16 and 28.
The 2020 Census counted 3,420 people named Isac (26 women and girls, 3,394 men and boys). SSA’s births carried forward to Census day, April 1, 2020, predict 2,616 born in the U.S. The Census count is 31% 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 |
|---|---|---|
| Silent Generation | 1928-1945 | 16 |
| Baby Boomers | 1946-1964 | 14 |
| Generation X | 1965-1980 | 87 |
| Millennials | 1981-1996 | 457 |
| Generation Z | 1997-2012 | 1,690 |
| Generation Alpha | 2013-2025 | 464 |
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).
Where are babies named Isac born?
| State | Births 2025 | Rank, boys | vs. national |
|---|---|---|---|
| California | 5 | #2,600 | 1.9× |
Where Isac is more common than its national share predicts
Relative to its national share, Isac is most over-represented in California: since 1910 it was given 1.9 times as often there as its national share each year would predict.
States: SSA state file, 1910-2025, published May 8, 2026; births count girls and boys together, and the rank is among boys’ names in the state in 2025. The file leaves out any state and year with fewer than 5 babies of the name, so small states are undercounted; each ratio compares the state’s births of Isac with the births its national share predicts year by year, for states with at least 100 births of the name.
Names spelled alike
Of these 8 names spelled alike, given to 368,096 babies since 1880, Isac is the fourth most given (<1% of them). In 2025 it was given to 22 of their 6,344 babies (<1%), the fifth 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 Isac
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 Isac and names like it
- Compare Isac and IsaacBirths, ranks, peak and the living estimate side by side.
- The most given names of the 2000sIsac peaked in 2006.
- California’s most given namesThe state where SSA recorded the most babies named Isac since 1910.
- Swedish namesWiktionary’s origin for Isac: every such name, by how often it is given.
- The top names of 2006The year the most babies were named Isac.
- The names of Generation ZMost people named Isac alive today were born 1997-2012.
- Names starting with IMost given first.