Isââc
given name · Latin script
Recorded as a male name· opposite-gender records fall within measured source noise
Isââc is a male given name written in the Latin script, with more bearers in the United States than in any other country. In Costa Rica it is the 71st most common given name. Recorded meaning: From Middle English Ysaac, from Latin Isaac, from Ancient Greek Ἰσαάκ (Isaák), from Hebrew יצחק (Yiṣḥāq, literally “he laughs, he will laugh”).
- CRCosta Rica1 in 963(measured from records)
- USUnited States1 in 1.4K
- ESSpain1 in 1.7K
carrying the name, as counted by its national register where one exists and as Mondonomo estimates it elsewhere (marked ≈ and "est." on hover). One hue, darker where it is more common; hover a country for its figure.
- United States (measured from records)
- Record sources
- 439 (measured from records)
- 1 in 635 (inferred from the name graph)
242,217 people, 2020
corpus datasets behind its best-documented spelling
strongest: highest-authority source
Ecuador
measured from records inferred from the name graph
Spellings & scripts
(measured from records)One other spelling is counted as the same name:
Locally spelled Isaac in US United States, BR Brazil, ES Spain and 4 more.
Spellings marked ● are how people bearing the name write it in our records, and ○ marks a model's transliteration; click a spelling to open its page.
Meaning & origin
(measured from records)- Middle EnglishYsaac(measured from records)
- LatinIsaac(measured from records)
- Ancient GreekἸσαάκIsaák(measured from records)
- HebrewיצחקYiṣḥāq“he laughs, he will laugh”(measured from records)
From Middle English Ysaac, from Latin Isaac, from Ancient Greek Ἰσαάκ (Isaák), from Hebrew יצחק (Yiṣḥāq, literally “he laughs, he will laugh”). Explained in Genesis as referring to his mother Sarah’s laughing when she was told she would have a son at her old age. The verb is masculine, however, perhaps due to its use as a boy’s name.
Cited for this meaning 12
- A concise dictionary of first names
- A dictionary of surnames
- Dictionary of American Family Names
- The Oxford Dictionary of Family Names in Britain and Ireland
- The Oxford Names Companion - The definitive guide to Surnames, First Names, and Place Names of the British Isles
Attested across 29 languages in the etymology graph.
Where in the world
(measured from records)Isââc counted together with the spellings and other-language forms grouped with it. Where a register counted another spelling, the row names it.
Sorted by bearers: national registers' counts, and Mondonomo's estimates (≈, est.) where no register counts.
| Country | Most common spelling | Sources | ||||
|---|---|---|---|---|---|---|
| US United States | — | 242,217 | 1 in 1.4K | 242K | Isaac | 439 |
| BR Brazil | #571 | 85,862 | 1 in 2.5K | 86K | Isaac | 173 |
| ZA South Africa | — | ≈61,000 est. | ≈1 in 924 | — | Isaac | 34 |
| CD Congo - Kinshasa | #117 | ≈49,000 est. | ≈1 in 2.1K | — | Isaac | 20 |
| ES Spain | #252 | 29,097 | 1 in 1.7K | 29K | Isaac | 195 |
| EC Ecuador | — | 26,634 | 1 in 635 | 27K | Isaac | 70 |
| CR Costa Rica | #71 | 5,295 | 1 in 963 | 5.3K | Isaac | 92 |
242,217 people counted by Census Bureau — First Name Frequency 2020 by sex, 2020. Exact figures are national registers' own counts, while figures marked ≈ and est. are Mondonomo’s estimates, counted from our sources and calibrated against those registers; hover one for how far to trust it in that country. A dash means neither exists.
Registers cited: Census Bureau — First Name Frequency 2020 by sex; IBGE — names by decade (Kaggle mirror); INE — Padrón per-token widgets (current living counts, given + apellidos); INEC — civil registry names; TSE — electoral roll (padrón) names. Figures without a register are Mondonomo estimates; see Methodology.
Country figures for a list of names, at full precision, are available under licence rather than by scraping this table (how that works).
Evidence
(measured from records)No register attests this spelling yet
Frequently asked questions
- What does the name Isââc mean, and where does it come from?
- From Middle English Ysaac, from Latin Isaac, from Ancient Greek Ἰσαάκ (Isaák), from Hebrew יצחק (Yiṣḥāq, literally “he laughs, he will laugh”). Recorded by A concise dictionary of first names and A dictionary of surnames and 10 other sources.
- Is Isââc a male or female name?
- Isââc is a male name in our records. Opposite-gender entries fall within the cross-gender noise we measure in the source data, so we don't report them as usage.
- In which country does Isââc have the most bearers?
- In the United States, the national register counted about 242 thousand people named Isââc, more than in any other country we hold, where it is most often spelled isaac.
- Where is Isââc most common?
- Measured as a share of residents rather than as a count, Isââc is densest in Ecuador — about 1 in 635 people — even though United States holds more of our records for it.
- How common is the name Isââc?
- In the United States, the national register counted 242,217 people named Isââc in 2020, about 1 in 1.4 thousand residents.
- How common is Isââc compared with other names?
- In Costa Rica, Isââc is the 71st most common given name of 15,284 given names recorded there.
What do you want to know about Isââc?
Nobody replies to these one by one, but what readers ask decides what these pages answer next.
Query this name via API
curl -H "X-API-Key: YOUR_KEY" https://api.mondonomo.ai/api/v1/name-graph/is%C3%A2%C3%A2cThe payload this page is built from: spellings and scripts, countries and languages, related names, and the registers that attest the form. It takes a free API key (1,000 requests a day), which returns what this page shows everyone; the full country table, every register citation and the year-by-year series come with a licensed key, as does bulk access.
About this data
measured from records inferred from the name graph machine-generated
These figures come from the data snapshot of and will change as it is rebuilt.
Statistics are aggregated from the Mondonomo name corpus; related names and etymology are inferred from the name graph; pronunciation and any machine-marked transliterations are model-generated. Read how the numbers are made, including their known failure modes, and where the data comes from.
Reference works we consult — surname dictionaries, official name registers, Wikidata and Wiktionary — are named directly, beside the claims they support. The per-country source counts also include datasets of person records: we publish how many there are and their authority tier, but not their names.
Cite this page Mondonomo, “Isââc” — the 71st most common given name in Costa Rica. Data snapshot 2026-10-13.