Isaacs
surname · Latin script
Meaning: Mainly Jewish, but also English and Welsh; patronymic from Isaac
Recorded for both men and women· direction only, no split published
Isaacs is a surname written in the Latin script, with more bearers in China than in any other country. In Lesotho it is the 2nd most common surname.
- ZASouth Africa≈1 in 1.9K(inferred from the name graph)
- GBUnited Kingdom≈1 in 16K
- USUnited States1 in 22K
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.
- China (inferred from the name graph)
- Sources
- 408 (measured from records)
- 1 in 441 (inferred from the name graph)
≈33,000 people, est.
Highest-authority source
St. Vincent & Grenadines
measured from records inferred from the name graph
Meaning & origin(measured from records)
Mainly Jewish, but also English and Welsh; patronymic from Isaac.
Sources 1
- Dictionary of American Family Names
Attested in 1 language in the etymology graph.
Where in the world(measured from records)
Isaacs 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 | ||||
|---|---|---|---|---|---|---|
| CN China | — | ≈33,000 est. | ≈1 in 42K | — | Isaacs | 6 |
| ZA South Africa | #208 | ≈29,000 est. | ≈1 in 1.9K | — | Isaacs | 101 |
| US United States | — | 14,951 | 1 in 22K | 15K | Isaacs | 408 |
| GB United Kingdom | — | ≈4,000 est. | ≈1 in 16K | — | Isaacs | 187 |
| ID Indonesia | — | ≈1,800 est. | ≈1 in 145K | — | Isaacs | 7 |
| GY Guyana | #86 | 1,140 | 1 in 658 | 1.1K | Isaacs | 8 |
| LS Lesotho | #2 | ≈590 est. | ≈1 in 3.3K | — | Isaacs | 2 |
| JM Jamaica | #317 | ≈390 est. | ≈1 in 7.3K | — | Isaacs | 15 |
| VC St. Vincent & Grenadines | — | 230 | 1 in 441 | 230 | — | 5 |
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 — Surname Frequency 2010; Guyana — Official List of Electors July 2025; Electoral Office of St Vincent & the Grenadines — Final Voters List (Nov 2025). 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).
Other recorded senses(measured from records)
Isaacs is also recorded in 5 other lexicons, as a different name or as an ordinary word. These are senses of the spelling, not of the name above.
In English, ‘Son of Isaac’.
as a nameEncyclopedia of surnames [the complete companion to tracing your names history]
In English, Katherlne M., US onomastician;
as a namePronouncing Dictionary of Proper Names
In English, Isaac Alfred, Australian jurist;
as a namePronouncing Dictionary of Proper Names
In English, Rufus, British politician
as a namePronouncing Dictionary of Proper Names
In English, Jorge, Colombian author
as a namePronouncing Dictionary of Proper Names
Ordered by how much of this spelling's record each language holds, so a sense from a language the name is barely used in sits last rather than first.
Notable people with this name(measured from records)
- Jorge Isaacsb. 1837COColombian writer and politician (1837-1895) Turín turan
- Isaac Isaacsb. 1855AUAustralian lawyer, politician and judge (1855-1948)
- Rufus Isaacs, 1st Marquess of Readingb. 1860GBBritish politician (1860-1935)
- Susan Sutherland Isaacsb. 1885GBLancashire-born educational psychologist and psychoanalyst (1885-1948)
- Rufus Isaacsb. 1914USAmerican game theorist (1914–1981)
- Jeremy Isaacsb. 1932GBScottish television producer and executive, and opera manager
- Cheryl Boone Isaacsb. 1949USbusinessperson
- Gregory Isaacsb. 1951JMJamaican singer (1951–2010)
- Jason Isaacsb. 1963GBBritish actor (born 1963)
- Pamela IsaacsUSAmerican actress
The ten people covered by the most Wikipedia language editions — a proxy for cross-cultural notability, which favours historical and Western figures over equally prominent contemporary ones — shown by birth year. Source: Wikidata (CC0).
Evidence(measured from records)
Attested in 36 sources across 25 countries.
| Country | Register | Year | Count | Rank |
|---|---|---|---|---|
| US United States | Census Bureau — Surname Frequency 2010 | 2010 | 15K | #2,422 |
| US United States | Census Bureau — Surname Frequency 2020 | 2020 | 14K | #2,445 |
| US United States | Census Bureau — Surname Frequency 2000 | 2000 | 14K | #2,306 |
| GY Guyana | Guyana — Official List of Electors July 2025 | 2025 | 1.1K | #69 |
| VC St. Vincent & Grenadines | Electoral Office of St Vincent & the Grenadines — Final Voters List (Nov 2025) | 2025 | 230 | #86 |
| US United States | wru Name Dictionary — US surnames, Census 2010 subset (Khanna et al.) | — | — | — |
Reference works 5
- Dictionary of American Family Names
- The Oxford Dictionary of Family Names in Britain and Ireland
- Nederlandse FamilienamenBank (Dutch surname bank; ex-Meertens Instituut, now CBG)2007
- Wikipedia surname tokens
- Wikidata name items (native-script + romanized given/family names)
These works list the name; their figures are licensed and are not reproduced here.
Register rows as of the 2026-10-09 data build.
Frequently asked questions
- What does the name Isaacs mean, and where does it come from?
- Mainly Jewish, but also English and Welsh; patronymic from Isaac. Recorded by Dictionary of American Family Names.
- In which country does Isaacs have the most bearers?
- Mondonomo estimates about 33 thousand people named Isaacs in China, more than in any other country we hold, where it is most often spelled isaacs.
- Where is Isaacs most common?
- Measured as a share of residents rather than as a count, Isaacs is densest in St. Vincent & Grenadines — about 1 in 441 people — even though China holds more of our records for it.
- How common is the name Isaacs?
- In the United States, the national register counted 14,951 people named Isaacs in 2010, about 1 in 22 thousand residents.
- How common is Isaacs compared with other names?
- In Lesotho, Isaacs is the 2nd most common surname of 5,753 surnames recorded there.
What do you want to know about Isaacs?
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/isaacsThe 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, “Isaacs” — the 2nd most common surname in Lesotho. Data snapshot 2026-10-10.