Marylou
given name · Latin script
A female name· listed as female by the registers that count names by sex
(measured from records)Officially recorded in 21 countries · latest register: SSA, 2025
/ma.ʁi.lu/(recorded in a dictionary) French · from Wiktionary
Marylou is a female given name written in the Latin script, with more bearers in the United States than in any other country. Recorded meaning: Variant of Mary Lou.
- PHPhilippines≈1 in 12K(inferred from the name graph)
- USUnited States1 in 13K
- CACanada≈1 in 15K
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.
- United States (measured from records)
- Record sources
- 349 (measured from records)
- ≈1 in 12K (inferred from the name graph)
26,002 people, 2020
corpus datasets behind its best-documented spelling
strongest: highest-authority source
Philippines, est.
measured from records inferred from the name graph
Spellings & scripts
(measured from records)Locally spelled Mary-Lou in NZ New Zealand.
Meaning & origin
(measured from records)Variant of Mary Lou.
Cited for this meaning 2
- DUDEN Lexikon der Vornamen
- Wiktionary
Attested in 1 language in the etymology graph.
Where in the world
(measured from records)Marylou 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 | — | 26,002 | 1 in 13K | 26K | Marylou | 349 |
| PH Philippines | — | ≈10,000 est. | ≈1 in 12K | — | Marylou | 58 |
| FR France | — | ≈3,800 est. | ≈1 in 18K | 5.3K | — | 5 |
| GB United Kingdom | — | ≈3,300 est. | ≈1 in 21K | listed | Marylou | 77 |
| CA Canada | — | ≈2,700 est. | ≈1 in 15K | 1 | Marylou | 102 |
| IE Ireland | #672 | ≈330 est. | ≈1 in 16K | — | Marylou | 7 |
| NZ New Zealand | — | ≈330 est. | ≈1 in 16K | — | Mary-Lou | 18 |
26,002 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; the penguin-baby-names-2009 register; INSEE — Fichier des prénoms (1900–2024); Alberta Open Government — Frequency and Ranking of Baby Names by Year and Gender. 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)- Marylou Whitneyb. 1925USAmerican philanthropist
- Marilù Parolinib. 1931ITnot in their usual nameItalian photographer and screenwriter (1931-2012)
- Marylou Dawesb. 1933CACanadian musician
- Marilù Eustachiob. 1934ITnot in their usual nameItalian artist
- Marilù Tolob. 1944ITnot in their usual nameItalian actress
- Marilù Olivab. 1975ITnot in their usual nameItalian writer
- Marilù S. Manzinib. 1978ITnot in their usual nameItalian writer
- Okloub. 1993FRnot in their usual nameFrench singer-songwriter
- Marilù Poluzzib. 2004ITnot in their usual nameItalian snowboarder
- Marylou Belugouactress
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)A formal English salutation is built on the surname, so it needs a full name — on its own, a first name only supports the informal form.
Evidence
(measured from records)35 registers and reference works attest this spelling, across 21 countries.
Reference works 2
- 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 Marylou mean, and where does it come from?
- Variant of Mary Lou. Recorded by DUDEN Lexikon der Vornamen and Wiktionary.
- What are other forms of the name Marylou?
- In the etymology graph, Marilou and Marylu are forms of the same name in other languages.
- How do you pronounce Marylou?
- It depends on the language: in French /ma.ʁi.lu/ (Wiktionary); in Spanish /maɾilou/. Transcriptions are machine-generated except where a dictionary is named.
- Is Marylou a male or female name?
- Marylou is a female name. National registers that list it by sex list it as female: United States (Census Bureau, 2020) and France (INSEE, 2024).
- In which country does Marylou have the most bearers?
- In the United States, the national register counted about 26 thousand people named Marylou, more than in any other country we hold, where it is most often spelled marylou.
- How common is the name Marylou?
- In the United States, the national register counted 26,002 people named Marylou in 2020, about 1 in 13 thousand residents.
- How common is Marylou compared with other names?
- In Ireland, Marylou is the 672nd most common given name of 14,976 given names recorded there.
What do you want to know about Marylou?
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/marylouThe 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, “Marylou” — the 672nd most common given name in Ireland. Data snapshot 2026-10-13.