Zac
Zac was given to 37 boys in 2025, #3,236 among boys’ names; 1,600 Americans have been recorded with it since 1957 (Social Security Administration, published May 2026).
An estimated 1,560 Americans named Zac and born in the U.S. are alive in 2026 (98% of everyone recorded); the median is 14 years old and half are between 9 and 22.
Girls and boys together; gaps are years SSA did not record (fewer than 5 births).
Births of Zac by year: SSA national baby-name file, 1880-2025, published May 8, 2026. SSA’s notes on the data.
What does Zac mean?
Wiktionary, English section
Zac is “Alternative form of Zach, a diminutive of the male given names Zachariah, Zacharias, and Zachary.”
/zæk/
Meaning: Wiktionary, English section, as of Sep 25, 2026 (CC BY‑SA 4.0).
How popular is Zac?
#3,236 among boys’ names, 2025
Zac fell from #2,167 in 2015 to #3,236 in 2025 among boys’ names; its share of boys born fell from 33.4 to 21.7 per million.
84 babies in 2014, the peak
Zac peaked in 2014, when 84 boys were given it, #1,792 among boys’ names. The 37 births of 2025 are 44% of that peak.
| Year | Births | Rank | Per million boys |
|---|---|---|---|
| 2025 | 37 | #3,236 | 21.7 |
| 2024 | 35 | #3,389 | 20.3 |
| 2023 | 48 | #2,735 | 28.1 |
| 2022 | 47 | #2,790 | 26.9 |
| 2021 | 54 | #2,495 | 30.9 |
| 2020 | 50 | #2,582 | 29.0 |
| 2019 | 50 | #2,624 | 27.9 |
| 2018 | 56 | #2,382 | 30.8 |
| 2017 | 67 | #2,089 | 36.2 |
| 2016 | 74 | #1,972 | 39.0 |
Every recorded year (59)
| Year | Births | Rank | Per million boys |
|---|---|---|---|
| 2015 | 64 | #2,167 | 33.4 |
| 2014 | 84 | #1,792 | 43.7 |
| 2013 | 63 | #2,136 | 33.3 |
| 2012 | 74 | #1,940 | 39.0 |
| 2011 | 77 | #1,847 | 40.5 |
| 2010 | 83 | #1,792 | 43.3 |
| 2009 | 70 | #2,006 | 35.3 |
| 2008 | 52 | #2,461 | 25.5 |
| 2007 | 34 | #3,309 | 16.4 |
| 2006 | 19 | #4,855 | 9.2 |
| 2005 | 21 | #4,319 | 10.5 |
| 2004 | 35 | #2,948 | 17.6 |
| 2003 | 20 | #4,267 | 10.1 |
| 2002 | 14 | #5,383 | 7.2 |
| 2001 | 25 | #3,505 | 12.9 |
| 2000 | 13 | #5,572 | 6.6 |
| 1999 | 14 | #5,021 | 7.3 |
| 1998 | 11 | #5,828 | 5.8 |
| 1997 | 18 | #3,869 | 9.5 |
| 1996 | 14 | #4,600 | 7.4 |
| 1994 | 14 | #4,529 | 7.2 |
| 1993 | 12 | #4,992 | 6.1 |
| 1992 | 10 | #5,646 | 5.0 |
| 1991 | 9 | #5,927 | 4.5 |
| 1990 | 8 | #6,400 | 3.9 |
| 1989 | 9 | #5,599 | 4.5 |
| 1988 | 8 | #5,738 | 4.2 |
| 1987 | 12 | #3,951 | 6.4 |
| 1986 | 9 | #4,844 | 4.9 |
| 1985 | 13 | #3,593 | 7.0 |
| 1984 | 14 | #3,266 | 7.8 |
| 1983 | 9 | #4,495 | 5.0 |
| 1982 | 9 | #4,583 | 5.0 |
| 1981 | 9 | #4,498 | 5.0 |
| 1980 | 12 | #3,610 | 6.7 |
| 1979 | 6 | #6,047 | 3.5 |
| 1978 | 8 | #4,549 | 4.9 |
| 1977 | 13 | #3,197 | 7.9 |
| 1976 | 18 | #2,505 | 11.5 |
| 1975 | 13 | #3,074 | 8.3 |
| 1974 | 7 | #4,625 | 4.5 |
| 1973 | 5 | #5,867 | 3.2 |
| 1972 | 10 | #3,339 | 6.2 |
| 1971 | 11 | #3,140 | 6.2 |
| 1970 | 9 | #3,517 | 4.8 |
| 1964 | 5 | #4,589 | 2.5 |
| 1963 | 5 | #4,617 | 2.5 |
| 1962 | 5 | #4,627 | 2.4 |
| 1957 | 5 | #4,548 | 2.3 |
Ranks and shares: boys’ names in each year’s SSA file; share of all boys SSA recorded that year.
Is Zac a boy’s or a girl’s name?
Zac has been recorded only for boys: SSA lists no girls with the name in 59 years of records (it lists a name only in years with 5 or more babies of a sex).
Girls and boys named Zac: the SSA national file counts each sex separately.
How many people are named Zac, and how old are they?
1,560 alive in 2026, estimated
That is 98% of the 1,600 Americans ever recorded as Zac. The median Zac alive today is 14 years old; half are between 9 and 22.
The 2020 Census counted 6,471 people named Zac (16 women and girls, 6,455 men and boys). SSA’s births carried forward to Census day, April 1, 2020, predict 1,315 born in the U.S. The Census count is 4.9 times that prediction. Possible reasons: the Census records the name people give, which for many is the short form Zac rather than the name on their birth record, and it counts people born abroad, whom SSA’s files leave out.
Alive today, by age
Alive today, by generation
| Generation | Born | Alive |
|---|---|---|
| Baby Boomers | 1946-1964 | 15 |
| Generation X | 1965-1980 | 101 |
| Millennials | 1981-1996 | 151 |
| Generation Z | 1997-2012 | 572 |
| Generation Alpha | 2013-2025 | 724 |
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 Zac born?
| State | Births 2025 | Rank, boys | vs. national |
|---|---|---|---|
| California | 9 | #1,826 | 1.0× |
| New Jersey | 5 | #1,182 | 0.1× |
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 Zac 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 4 names spelled alike, given to 12,745 babies since 1880, Zac is the third most given (13% of them). In 2025 it was given to 37 of their 175 babies (21%), the second 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 Zac
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 Zac and names like it
- Compare Zac and ZackBirths, ranks, peak and the living estimate side by side.
- The most given names of the 2010sZac peaked in 2014.
- California’s most given namesThe state where SSA recorded the most babies named Zac since 1910.
- The top names of 2014The year the most babies were named Zac.
- The names of Generation AlphaMost people named Zac alive today were born 2013-2025.
- Names starting with ZMost given first.