Joô
surname · Latin script
Joô is a surname written in the Latin script, with more bearers in the United States than in any other country. Recorded meaning: Borrowed from Korean 주 (ju).
- USUnited States1 in 200K(measured from records)
- FIFinland1 in 1.1Mas Jooe
- SESweden1 in 56K
carrying the name, as counted by each country's national register. Where a country counts another spelling of the name rather than Joô itself, the figure is that spelling’s, and it is named. One hue, darker where it is more common; hover a country for its figure.
- United States (measured from records)
- Sources
- 282 (measured from records)
- 1 in 56K (inferred from the name graph)
1,663 people, 2020
Highest-authority source
Sweden
measured from records inferred from the name graph
Spellings & scripts(measured from records)
One other spelling is counted as the same name:
Locally spelled Joo in US United States, FI Finland, BR Brazil.
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)
Borrowed from Korean 주 (ju).
Sources 2
- Dictionary of American Family Names
- Wiktionary
Attested across 25 languages in the etymology graph.
Where in the world(measured from records)
Joô 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.
1,663 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; Census Bureau — Surname Frequency 2020; DVV — Etunimitilasto (Finnish given names register); DVV — Nimipalvelu (Finnish name service, per-name lookup); IBGE — names by decade (Kaggle mirror); IBGE — Nomes (census name API); Skatteverket — Sök hur många som har ett visst namn (living population); Danmarks Statistik — Hvor mange hedder...? (living-population name counts); dane.gov.pl — PESEL given names (first + second name position, 2026-01-20); dane.gov.pl — PESEL living persons (surnames). 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 Joô mean, and where does it come from?
- Borrowed from Korean 주 (ju). Recorded by Dictionary of American Family Names and Wiktionary.
- In which country does Joô have the most bearers?
- In the United States, the national register counted about 1.7 thousand people named Joô, more than in any other country we hold, where it is most often spelled joo.
- Where is Joô most common?
- Measured as a share of residents rather than as a count, Joô is densest in Sweden — about 1 in 56 thousand people — even though United States holds more of our records for it.
- How common is the name Joô?
- In the United States, the national register counted 1,663 people named Joô in 2020, about 1 in 200 thousand residents.
- How common is Joô compared with other names?
- In Finland, Joô is the 342nd most common given name of 19,056 given names recorded there.
What do you want to know about Joô?
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/jo%C3%B4The 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, “Joô” — the 342nd most common given name in Finland. Data snapshot 2026-10-10.