Izaac
Izaac was the 2856th most popular name for boys in 2025, given to 44 babies. Its best year was 2005, when it ranked 1192nd; the most babies were born in 2009 (151). Over the last ten years it has moved down 1,493 places. More babies were named Izaac in the 2010s than in any other decade.
Meaning (as Isaac) 'he laughs / will laugh' · Hebrew
- Rank in 2025
- #2,856 boys, down 682 places since 2020
- Babies in 2025
- 44boys
- Girls and boys
- Almost always a boy’s name2021–2025
- Peak year
- 2009151 babies
- Total since 1880
- 2,845babies recorded
What does the name Izaac mean?
Izaac is a spelling of Isaac, pronounced the same way, so it shares Isaac's meaning and origin.
Isaac is the Hebrew Yitzhak, 'he laughs' or 'he will laugh'. In Genesis he is the son of Abraham and Sarah, and his name recalls Sarah's laughter at being promised a son in old age. In Genesis 21:6 Sarah says that God has brought her laughter. Medieval Christian and Jewish communities both used the name; DMNES finds it in England from 1222.
יִצְחָק (Biblical Hebrew, “Yitzhak, '(he) will laugh'”)
How sure is this? Well established.
See also: Hebrew names, names that mean joy.
Sources for this meaning
- Dictionary of Medieval Names from European Sources (ed. S. L. Uckelman), Edition 2023 no. 1, s.v. 'Isaac'
- Hebrew Bible, Genesis 21.6, JPS Tanakh: Gender-Sensitive Edition, with translator's note (via Sefaria)
- US Social Security Administration, national baby-name data 1880-2025 (names.zip, yob*.txt), team3 computation
- Wikidata item Q5920537
- Wiktionary, entry 'Isaac'
Izaac popularity since 1880
| Year | Rank (boys) | Babies (boys) |
|---|---|---|
| 2025 | #2,856 | 44 |
| 2020 | #2,174 | 64 |
| 2010 | #1,293 | 133 |
| 2000 | #1,657 | 70 |
| 1990 | #7,526 | 6 |
| 1980 | #6,653 | 5 |
| 1970 | — | — |
| 1960 | — | — |
| 1950 | — | — |
| 1940 | — | — |
| 1930 | — | — |
| 1920 | — | — |
| 1910 | — | — |
| 1900 | — | — |
| 1890 | — | — |
| 1880 | — | — |
How popular is Izaac, counting every spelling?
Izaac is a spelling of Isaac, a name family that ranked #44 for boys in 2025 once every spelling is counted together, compared with #2,856 for Izaac on its own. Together these spellings went to 6,461 boys in 2025.
| Spelling | Babies 2025 | Official rank | Babies 2021–2025 |
|---|---|---|---|
| Isaac | 5,953 | #47 | 32,842 |
| Issac | 258 | #915 | 1,677 |
| Isaak | 48 | #2,693 | 293 |
| Izaak | 41 | #3,016 | 269 |
| Izaac | 44 | #2,856 | 256 |
| Izak | 23 | #4,449 | 144 |
| Isac | 22 | #4,600 | 130 |
| Isak | 38 | #3,154 | 130 |
| Isacc | 10 | #7,880 | 83 |
| Izac | 7 | #10,089 | 54 |
| Izack | 7 | #10,090 | 29 |
Spellings count together when they sound the same in American English and are used for the same sex; nicknames and forms that sound different (such as Theo and Theodore) are kept apart. How we group spellings.
How many kids will share the name Izaac?
44 of the 3,606,400 babies born in the US in 2025 were named Izaac (0.01 per 1,000 births). For a boy named Izaac born in 2025, the chance that another child with the same name is in a class of 20 children the same age is under 1 in 50. If every grade liked the name as much as the 2025 babies do, only about one elementary school in 191 (of 430 pupils) would have a child named Izaac.
Shares of all registered births (NCHS); classes assumed to be children born the same year. How we estimate this.
How old are people named Izaac?
About 2,800 people born in the US named Izaac are alive today, with a median age of 16; half are between 11 and 22. That makes Izaac mostly worn by children and young adults.
Babies given the name each year (SSA) times the share of that birth year still alive (SSA life tables). Counts people born in the US only. Method.
Izaac by state
How common Izaac was among boys born in each state in 2021–2025. It is notably more common than nationally in California (1.9×), Texas (1.7×). In 47 states fewer than five boys a year got the name, too few for SSA to publish, so those states show as zero.
Names with a similar history
These names rose and fell in step with Izaac: their share of US boys followed the most similar curve since 1880. If you like Izaac, they share its era and feel.
Questions about the name Izaac
What does Izaac mean?
Izaac is a spelling of Isaac, which means “'he laughs / will laugh'” (Hebrew origin). Certainty: well established.
How popular is the name Izaac?
Izaac was the 2856th most popular name for boys in 2025, given to 44 babies. Its best year was 2005, when it ranked 1192nd; the most babies were born in 2009 (151). Over the last ten years it has moved down 1,493 places. More babies were named Izaac in the 2010s than in any other decade.
Is Izaac a boy or girl name?
In 2021–2025, almost always a boy’s name given the name Izaac in the US.
Where is Izaac most popular?
In 2021–2025, Izaac was most common in New Mexico (0.15 per 1,000 boys), followed by California and Texas.