Demarco

surname · Latin script

Meaning: first-person singular present indicative of demarcar

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

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

Demarco is a surname written in the Latin script, with more bearers in the United States than in any other country.

rarermore common
  • USUnited States1 in 23K(measured from records)
  • GBUnited Kingdom≈1 in 25K
  • UYUruguay1 in 3.1K

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)

14,731 people, 2010

Sources
401 (measured from records)

Highest-authority source

1 in 3.1K (inferred from the name graph)

Uruguay

measured from records inferred from the name graph

Name dossier (print, CSV)

Meaning & origin(measured from records)

first-person singular present indicative of demarcar

Sources 1

  • kaikki.org Wiktionary extract (IPA + transliterations)

Where in the world(measured from records)

Demarco 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 Demarco is recorded, by country
CountryMost common spellingSources
US United States14,7311 in 23K15KDemarco401
IT Italy≈3,400 est.≈1 in 19K—Demarco29
AR Argentina3,0931 in 15K3.1K—2
GB United Kingdom≈2,700 est.≈1 in 25K—Demarco93
BR Brazil1,3821 in 153K1.4K—2
UY Uruguay1,0941 in 3.1K1.1K—1
NZ New Zealand≈380 est.≈1 in 13K—Demarco11
IE Ireland≈270 est.≈1 in 20K—Demarco12

14,731 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; RENAPER — Apellidos (person counts, national); IBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname); INE Uruguay — Apellidos más frecuentes 1902–2024 (Tableau Public). 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)

Demarco is also recorded as 3 other names, grouped separately because the records behind them do not connect to the one described above.

  • Spanish surname8 spellings in the group

    Most recorded in Argentina, United States, Brazil, Uruguay

    Languages: Spanish, Portuguese

    Also written De'Marco, De-Marco, De Marco

  • French surname3 spellings in the group

    Most recorded in United States, France, Canada, United Kingdom

    Also written De-Marco

  • Polish surname2 spellings in the group

    Most recorded in United States, Poland, United Kingdom

    Also written De Marco

46 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.

Other recorded senses(measured from records)

Demarco 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.

  • In Italian, grafia justaposta de De Marco

    as a nameDicionário dos sobrenomes italianos

  • In Italian, first-person singular present indicative of demarcare

    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)

190019201940196019802000Ab DeMarco, b. 1916Nelson Demarco, b. 1925Paddy DeMarco, b. 1928Tony DeMarco, b. 1932Bob DeMarco, b. 1938Tom DeMarco, b. 1940Laura DeMarco, b. 1974Antonio DeMarco, b. 1986Mac DeMarco, b. 1990

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)

FormalDear Mr Demarco,
InformalHi Demarco,

Evidence(measured from records)

Attested in 32 sources across 18 countries.

Official registers attesting Demarco
CountryRegisterYearCountRank
US United StatesCensus Bureau — Surname Frequency 2010201015K#2,452
US United StatesCensus Bureau — Surname Frequency 2000200014K#2,300
US United StatesCensus Bureau — Surname Frequency 2020202014K#2,550
AR ArgentinaRENAPER — Apellidos (person counts, national)—2.5K—
BR BrazilIBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname)—1.4K#6,858
UY UruguayINE Uruguay — Apellidos más frecuentes 1902–2024 (Tableau Public)—1.1K—
US United Stateswru Name Dictionary — US surnames, Census 2010 subset (Khanna et al.)———

Reference works 5

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 Demarco mean, and where does it come from?
first-person singular present indicative of demarcar Recorded by kaikki.org Wiktionary extract (IPA + transliterations).
How do you pronounce Demarco?
A machine transcription gives /dɪˈmɑɹkoʊ/ (IPA) for English.
In which country does Demarco have the most bearers?
In the United States, the national register counted about 15 thousand people named Demarco, more than in any other country we hold, where it is most often spelled demarco.
Where is Demarco most common?
Measured as a share of residents rather than as a count, Demarco is densest in Uruguay — about 1 in 3.1 thousand people — even though United States holds more of our records for it.
How common is the name Demarco?
In the United States, the national register counted 14,731 people named Demarco in 2010, about 1 in 23 thousand residents.

What do you want to know about Demarco?

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

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, “Demarco”. Data snapshot 2026-10-10.

See how Demarco parses inside a full name →