Halloran
surname · Latin script
Meaning: From Irish Gaelic O hAllmhurdin, ‘descendant of Allmhurdn’, a personal name meaning literally ‘little foreigner’
(measured from records)Officially recorded in 8 countries · latest register: Census Bureau, 2020
/ˈhæɫɝən/(machine-generated) pronunciation, model-generated
Halloran is a surname written in the Latin script, with more bearers in the United States than in any other country.
- USUnited States1 in 61K(measured from records)
- IEIreland≈1 in 14Kas O'Halloran
- AUAustralia≈1 in 17Kas O'Halloran
carrying the name, as counted by its national register where one exists and as Mondonomo estimates it elsewhere (marked ≈ and "est." on hover). Where a country counts another spelling of the name rather than Halloran 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)
- Record sources
- 242 (measured from records)
- 1 in 61K (inferred from the name graph)
5,465 people, 2010
corpus datasets behind its best-documented spelling
strongest: highest-authority source
United States
measured from records inferred from the name graph
Spellings & scripts
(measured from records)Locally spelled Ohalloran in US United States, GB United Kingdom, CA Canada and 3 more and O'Halloran in AU Australia, IE Ireland.
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)From Irish Gaelic O hAllmhurdin, ‘descendant of Allmhurdn’, a personal name meaning literally ‘little foreigner’.
Cited for this meaning 1
- Encyclopedia of surnames [the complete companion to tracing your names history]
Attested in 1 language in the etymology graph.
Where in the world
(measured from records)Halloran 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 | — | 5,465 | 1 in 61K | 5.5K | Ohalloran | 242 |
| AU Australia | — | ≈1,500 est. | ≈1 in 17K | — | O'Halloran | 112 |
| GB United Kingdom | — | ≈900 est. | ≈1 in 73K | 2.2K | Ohalloran | 117 |
| EG Egypt | — | ≈510 est. | ≈1 in 205K | — | Ohalloran | 2 |
| CA Canada | — | ≈490 est. | ≈1 in 77K | — | Ohalloran | 81 |
| IE Ireland | #444 | ≈360 est. | ≈1 in 14K | — | O'Halloran | 73 |
| JM Jamaica | — | ≈58 est. | ≈1 in 48K | — | Ohalloran | 1 |
| IS Iceland | — | ≈13 est. | ≈1 in 28K | — | Ohalloran | 1 |
5,465 people counted by Census Bureau — Surname Frequency 2010, 2010, counting the spelling halloran. 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; Surnames of England and Wales (taliesin-arlein.net, Sept 2002 electoral register). 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)Halloran is also recorded in 2 other lexicons, as a different name or as an ordinary word. These are senses of the spelling, not of the name above.
shortened Anglicized form of Gaelic 6 hAllmhurain ‘descendant ofAllmhurdn’, a personal name from a diminutive of allmhurach ‘foreigner’ (from all ‘beyond’ + muir ‘sea’).
as a nameDictionary of American Family Names
‘descendant of Allmlnuran', a personal name from a dim. of allmhurach foreigner (from all beyond + muir sea). Vars.: O’Halowrane, O’Halloraine, O’Halloran, O’Hallaran, O’Halleran, O’Halleron, Holloran.
as a nameA dictionary of surnames
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)- Henry Halloranb. 1811ZAAustralian civil servant and poet (1811-1893)
- Jack Halloranb. 1916USAmerican composer and choral director (1916-1997)
- Nancy Pyleb. 1930USnot in their usual nameAmerican politician (died 2023)
- Kay Halloranb. 1937USAmerican politician
- M Elizabeth Halloranb. 1950USAmerican biostatistician
- Shawn Halloranb. 1964USAmerican football player (born 1964)
- Dan Halloranb. 1972USlawyer, politician
- Lia Halloranb. 1977USAmerican artist (born 1977)
- Ben Halloranb. 1992AUAustralian association football player
- Amy HalloranUSAmerican 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).
How to address them
(machine-generated)Evidence
(measured from records)16 registers and reference works attest this spelling, across 8 countries.
| Country | Register | Year | Count | Rank |
|---|---|---|---|---|
| US United States | Census Bureau — Surname Frequency 2010 | 2010 | 5.5K | #6,248 |
| US United States | Census Bureau — Surname Frequency 2000 | 2000 | 5.2K | #6,061 |
| US United States | Census Bureau — Surname Frequency 2020 | 2020 | 5.1K | #6,365 |
| GB United Kingdom | A Dictionary of Surnames (Hanks & Hodges, 1988) | — | — | — |
| US United States | wru Name Dictionary — US surnames, Census 2010 subset (Khanna et al.) | — | — | — |
Reference works 4
- Dictionary of American Family Names
- 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 Halloran mean, and where does it come from?
- From Irish Gaelic O hAllmhurdin, ‘descendant of Allmhurdn’, a personal name meaning literally ‘little foreigner’. Recorded by Encyclopedia of surnames [the complete companion to tracing your names history].
- How do you pronounce Halloran?
- A machine transcription gives /ˈhæɫɝən/ (IPA) for English.
- In which country does Halloran have the most bearers?
- In the United States, the national register counted about 5.5 thousand people named Halloran, more than in any other country we hold, where it is most often spelled ohalloran.
- Where is Halloran most common?
- Halloran is densest in the United States, where the national register counts about 1 in 61 thousand people carrying it.
- How common is the name Halloran?
- In the United States, the national register counted 5,465 people named Halloran in 2010, about 1 in 61 thousand residents.
- How common is Halloran compared with other names?
- In Ireland, Halloran is the 444th most common surname of 73,729 surnames recorded there.
What do you want to know about Halloran?
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/halloranThe 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, “Halloran” — the 444th most common surname in Ireland. Data snapshot 2026-10-13.