Gillion
surname · Latin script
Meaning: from a variant of the personal name Julian
(measured from records)Officially recorded in 8 countries · latest register: Census Bureau, 2020
/ɡɪljən/(machine-generated) pronunciation, model-generated
Gillion is a surname written in the Latin script, with more bearers in the United States than in any other country.
- BEBelgium1 in 308K(measured from records)
- USUnited States1 in 761K
carrying the name, as counted by each country's national register. One hue, darker where it is more common; hover a country for its figure.
- United States (measured from records)
- Record sources
- 11 (measured from records)
- 1 in 308K (inferred from the name graph)
437 people, 2010
corpus datasets behind its best-documented spelling
strongest: reference-verified
Belgium
measured from records inferred from the name graph
Meaning & origin
(measured from records)from a variant of the personal name Julian.
Cited for this meaning 1
- Dictionary of American Family Names
Attested in 1 language in the etymology graph.
Where in the world
(measured from records)Gillion 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 | 437 | 1 in 761K | 527 | Gillion | 11 |
| BE Belgium | 38 | 1 in 308K | 38 | — | 1 |
| FR France | — | — | 40 | — | — |
| NL Netherlands | — | — | 28 | — | — |
| SE Sweden | — | — | 19 | — | — |
437 people counted by Census Bureau — Surname Frequency 2010, 2010. 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; Census Bureau — Surname Frequency 2020; INSEE — Fichier des noms de famille (1891–2000); Familienaam.be — Belgian family-name frequency (population register); Meertens NVB — Nederlandse Voornamenbank (all-time BRP bearer counts, 2018); Skatteverket — Sök hur många som har ett visst namn (living population). 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)Gillion is also recorded in one other lexicon, as a different name or as an ordinary word. These are senses of the spelling, not of the name above.
In English, A thousand million, proposed as an alternative to the (now little used) British milliard and the (ambiguous, in the UK) US billion.
as a wordkaikki.org Wiktionary extract (IPA + transliterations)
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)- Rob Gillionb. 1955GBBritish Anglican bishop
- Lil' C-Styleb. 1974USnot in their usual nameAmerican rapper
- Andy Gillionb. 1988GBBritish-born heavy metal guitarist, multi-instrumentalist, composer, and songwriter
- Liam Gillionb. 2002NZNew Zealand footballer
- Timmy Gillionb. 2002FRFrench track cyclist
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).
How to address them
(machine-generated)Evidence
(measured from records)19 registers and reference works attest this spelling, across 8 countries.
| Country | Register | Year | Count | Rank |
|---|---|---|---|---|
| US United States | Census Bureau — Surname Frequency 2020 | 2020 | 527 | #44,004 |
| US United States | Census Bureau — Surname Frequency 2000 | 2000 | 488 | #41,924 |
| US United States | Census Bureau — Surname Frequency 2010 | 2010 | 437 | #48,347 |
| FR France | INSEE — Fichier des noms de famille (1891–2000) | 1951 | 70 | — |
| FR France | INSEE — Fichier des noms de famille (1891–2000) | 1961 | 64 | — |
| FR France | INSEE — Fichier des noms de famille (1891–2000) | 1941 | 54 | — |
| FR France | INSEE — Fichier des noms de famille (1891–2000) | 1981 | 53 | — |
| FR France | INSEE — Fichier des noms de famille (1891–2000) | 1971 | 52 | — |
| FR France | INSEE — Fichier des noms de famille (1891–2000) | 1931 | 51 | — |
| FR France | INSEE — Fichier des noms de famille (1891–2000) | 1991 | 40 | — |
| BE Belgium | Familienaam.be — Belgian family-name frequency (population register) | 2008 | 38 | #31,732 |
| FR France | INSEE — Fichier des noms de famille (1891–2000) | 1921 | 37 | — |
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 given-name 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 Gillion mean, and where does it come from?
- from a variant of the personal name Julian. Recorded by Dictionary of American Family Names.
- How do you pronounce Gillion?
- A machine transcription gives /ɡɪljən/ (IPA) for English.
- In which country does Gillion have the most bearers?
- In the United States, the national register counted about 437 people named Gillion, more than in any other country we hold, where it is most often spelled gillion.
- Where is Gillion most common?
- Measured as a share of residents rather than as a count, Gillion is densest in Belgium — about 1 in 308 thousand people — even though United States holds more of our records for it.
- How common is the name Gillion?
- In the United States, the national register counted 437 people named Gillion in 2010, about 1 in 761 thousand residents.
What do you want to know about Gillion?
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/gillionThe 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, “Gillion”. Data snapshot 2026-10-13.