Marylou

given name · Latin script

Recorded as a female name· opposite-gender records fall within measured source noise

/ˈmæɹiɫu/(machine-generated) pronunciation, model-generated

Marylou is a given name written in the Latin script, with more bearers in China than in any other country. Recorded meaning: Variant of Mary Lou.

rarermore common
  • USUnited States1 in 13K(measured from records)
  • PHPhilippines≈1 in 14K
  • CACanada≈1 in 16K

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.

China (inferred from the name graph)

≈69,000 people, est.

Sources
349 (measured from records)

Highest-authority source

1 in 13K (inferred from the name graph)

United States

measured from records inferred from the name graph

Name dossier (print, CSV)

Spellings & scripts(measured from records)

Locally spelled Mary-Lou in NZ New Zealand.

Meaning & origin(measured from records)

Variant of Mary Lou.

Sources 2

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.

Where Marylou is recorded, by country
CountryMost common spellingSources
CN China—≈69,000 est.≈1 in 20K—Marylou4
US United States—26,0021 in 13K26KMarylou349
PH Philippines—≈7,600 est.≈1 in 14K—Marylou58
FR France—≈3,300 est.≈1 in 20K5.3K—5
GB United Kingdom—≈2,800 est.≈1 in 23KlistedMarylou77
CA Canada—≈2,300 est.≈1 in 16K1Marylou102
IE Ireland#672≈280 est.≈1 in 18K—Marylou7
NZ New Zealand—≈260 est.≈1 in 19K—Mary-Lou18

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).

Other names spelled this way(inferred from the name graph)

Marylou is also recorded as 5 other names, grouped separately because the records behind them do not connect to the one described above.

  • French given name9 spellings in the group

    Most recorded in France, United States, Philippines, Canada

    Languages: French, Spanish, Portuguese

    Also written Mary-Lou, Marylöu, Maryloü, Maryloù

  • a separate name2 spellings in the group

    Also written Mary-Lou

  • Italian given name2 spellings in the group

    Most recorded in Italy, United States, United Kingdom, San Marino

    Also written Mary-Lou

  • Vietnamese given name2 spellings in the group

    Most recorded in United States, Vietnam

    Also written Mary-Lou

  • Czech given name3 spellings in the group

    Most recorded in Czechia, Slovakia, United States

    Languages: Czech, Slovak

    Also written Maryloù

37 further groups record this spelling and are not listed here.

Grouping is the name graph's, not a register's: two spellings join a group when the evidence links them, so a group is a claim about the records rather than about the people.

Notable people with this name(measured from records)

192019401960198020002020Marylou Whitney, b. 1925Marilù Parolini, b. 1931Marylou Dawes, b. 1933Marilù Eustachio, b. 1934Marilù Tolo, b. 1944Marilù Oliva, b. 1975Marilù S. Manzini, b. 1978Oklou, b. 1993Marilù Poluzzi, b. 2004

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)

InformalHi Marylou,

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)

Attested in 35 sources across 21 countries.

Official registers attesting Marylou
CountryRegisterYearCountRank
US United StatesCensus Bureau — First Name Frequency 2020 by sex202026K#1,370
FR FranceINSEE — Fichier des prénoms (1900–2024)20245.3K#808
CA CanadaStatistics Canada — First names at birth by sex at birth (Table 17-10-0147-01)201050—
CA CanadaStatistics Canada — First names at birth by sex at birth (Table 17-10-0147-01)200350—
CA CanadaStatistics Canada — First names at birth by sex at birth (Table 17-10-0147-01)200749—
CA CanadaStatistics Canada — First names at birth by sex at birth (Table 17-10-0147-01)200945—
CA CanadaStatistics Canada — First names at birth by sex at birth (Table 17-10-0147-01)200443—
CA CanadaStatistics Canada — First names at birth by sex at birth (Table 17-10-0147-01)200642—
CA CanadaStatistics Canada — First names at birth by sex at birth (Table 17-10-0147-01)200541—
CA CanadaStatistics Canada — First names at birth by sex at birth (Table 17-10-0147-01)201138—
CA CanadaStatistics Canada — First names at birth by sex at birth (Table 17-10-0147-01)200138—
CA CanadaStatistics Canada — First names at birth by sex at birth (Table 17-10-0147-01)199638—

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?
A machine transcription gives /ˈmæɹiɫu/ (IPA) for English.
Is Marylou a male or female name?
Marylou is a female name in our records. Opposite-gender entries fall within the cross-gender noise we measure in the source data, so we don't report them as usage.
In which country does Marylou have the most bearers?
Mondonomo estimates about 69 thousand people named Marylou in China, more than in any other country we hold, where it is most often spelled marylou.
Where is Marylou most common?
Measured as a share of residents rather than as a count, Marylou is densest in the United States — about 1 in 13 thousand people — even though China holds more of our records for it.
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?

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Query this name via API
curl -H "X-API-Key: YOUR_KEY" https://api.mondonomo.ai/api/v1/name-graph/marylou

The 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 2026-10-10.

See how Marylou parses inside a full name →