Rielly
surname · Latin script
(measured from records)Officially recorded in 8 countries · latest register: dane.gov.pl, 2026
/ˈɹiɫi/(machine-generated) pronunciation, model-generated
Rielly is a surname written in the Latin script, with more bearers in the United States than in any other country. Recorded meaning: Main GB Location (1881): Glasgow; Angus; Lancs. from Ó Raghailligh, see O’Reilly .
- USUnited States1 in 354K(measured from records)
- BEBelgium1 in 12M
- PLPoland1 in 19M
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
- 30 (measured from records)
- 1 in 354K (inferred from the name graph)
939 people, 2010
corpus datasets behind its best-documented spelling
strongest: highest-authority source
United States
measured from records inferred from the name graph
Meaning & origin
(measured from records)Main GB Location (1881): Glasgow; Angus; Lancs. from Ó Raghailligh, see O’Reilly . Rigdon Riely Rigg • Current frequencies: GB 16, Ireland 0 • GB frequency 1881: 145 • Main GB location 1881: scattered: esp. Lancs; Lanarks Irish: from Ó Raghailligh, see O’Reilly .
Cited for this meaning 1
- The Oxford Dictionary of Family Names in Britain and Ireland
Where in the world
(measured from records)Rielly 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 | 939 | 1 in 354K | 940 | Rielly | 30 |
| PL Poland | 2 | 1 in 19M | 2 | — | — |
| BE Belgium | 1 | 1 in 12M | 1 | — | — |
| BR Brazil | — | — | 203 | Rielly | 30 |
| GB United Kingdom | — | — | 265 | Rielly | 5 |
| CO Colombia | — | — | — | Rielly | 2 |
| PA Panama | — | — | — | Rielly | 4 |
939 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 2000; Surnames of England and Wales (taliesin-arlein.net, Sept 2002 electoral register); IBGE — names by decade (Kaggle mirror); dane.gov.pl — PESEL living persons (surnames); Familienaam.be — Belgian family-name frequency (population 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).
Notable people with this name
(measured from records)- Tom Riellyb. 1966USAmerican politician in Iowa (born 1966)
- Morgan Riellyb. 1994CACanadian ice hockey defenceman
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)21 registers and reference works attest this spelling, across 8 countries.
| Country | Register | Year | Count | Rank |
|---|---|---|---|---|
| US United States | Census Bureau — Surname Frequency 2000 | 2000 | 940 | #24,857 |
| US United States | Census Bureau — Surname Frequency 2010 | 2010 | 939 | #26,086 |
| US United States | Census Bureau — Surname Frequency 2020 | 2020 | 907 | #28,032 |
| GB United Kingdom | Surnames of England and Wales (taliesin-arlein.net, Sept 2002 electoral register) | 2002 | 265 | #17,771 |
| BR Brazil | IBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname) | — | 24 | #173,031 |
| PL Poland | dane.gov.pl — PESEL living persons (surnames) | 2026 | 2 | — |
| PL Poland | dane.gov.pl — PESEL living persons (names) | — | 2 | #386,167 |
| BE Belgium | Familienaam.be — Belgian family-name frequency (population register) | 2008 | 1 | #168,405 |
| US United States | wru Name Dictionary — US surnames, Census 2010 subset (Khanna et al.) | — | — | — |
Reference works 2
- The Oxford Dictionary of Family Names in Britain and Ireland
- 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 Rielly mean, and where does it come from?
- Main GB Location (1881): Glasgow; Angus; Lancs. from Ó Raghailligh, see O’Reilly . Recorded by The Oxford Dictionary of Family Names in Britain and Ireland.
- How do you pronounce Rielly?
- A machine transcription gives /ˈɹiɫi/ (IPA) for English.
- In which country does Rielly have the most bearers?
- In the United States, the national register counted about 939 people named Rielly, more than in any other country we hold, where it is most often spelled rielly.
- Where is Rielly most common?
- Rielly is densest in the United States, where the national register counts about 1 in 354 thousand people carrying it.
- How common is the name Rielly?
- In the United States, the national register counted 939 people named Rielly in 2010, about 1 in 354 thousand residents.
What do you want to know about Rielly?
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/riellyThe 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, “Rielly”. Data snapshot 2026-10-13.