Costilla

surname · Latin script

Meaning: county, CO

Recorded for both men and women· direction only, no split published

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

Costilla is a surname written in the Latin script, with more bearers in Argentina than in any other country.

rarermore common
  • ARArgentina1 in 4.1K(measured from records)
  • PEPeru≈1 in 19K
  • USUnited States1 in 116K

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.

Argentina (measured from records)

10,988 people

Sources
181 (measured from records)

Highest-authority source

1 in 4.1K (inferred from the name graph)

Argentina

measured from records inferred from the name graph

Meaning & origin(measured from records)

county, CO

Sources 1

  • Pronouncing Dictionary of Proper Names

Attested across 2 languages in the etymology graph.

Where in the world(measured from records)

Costilla 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 Costilla is recorded, by country
CountryMost common spellingSources
AR Argentina#52510,9881 in 4.1K11KCostilla60
US United States—2,8721 in 116K2.9KCostilla181
BJ Benin—≈2,800 est.≈1 in 4.7K—Costilla1
PE Peru—≈1,700 est.≈1 in 19K—Costilla50
GT Guatemala—≈700 est.≈1 in 25K—Costilla3

10,988 people counted by RENAPER — Apellidos (person counts, national). 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: RENAPER — Apellidos (person counts, national); Census Bureau — Surname Frequency 2010. 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)

1700180019002000Miguel Hidalgo Y Costilla, b. 1753José Cafranga Costilla, b. 1780Jorge Eduardo Costilla Sánchez, b. 1971Fernando Costilla, b. 1972Ismene Costilla, b. 1976

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)

FormalEstimado/a Costilla,Dear Costilla, (English)
InformalEstimado/a Costilla,Hello, (English)

Evidence(measured from records)

Attested in 12 sources across 6 countries.

Official registers attesting Costilla
CountryRegisterYearCountRank
AR ArgentinaRENAPER — Apellidos (person counts, national)—11K—
US United StatesCensus Bureau — Surname Frequency 201020102.9K#11,062
US United StatesCensus Bureau — Surname Frequency 202020202.7K#11,264
US United StatesCensus Bureau — Surname Frequency 200020002K#13,731
US United Stateswru Name Dictionary — US surnames, Census 2010 subset (Khanna et al.)———

Reference works 1

  • 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 Costilla mean, and where does it come from?
county, CO Recorded by Pronouncing Dictionary of Proper Names.
What are other forms of the name Costilla?
In the etymology graph, Costa and Cuesta are forms of the same name in other languages.
How do you pronounce Costilla?
A machine transcription gives /kostiʎa/ (IPA) for Spanish.
In which country does Costilla have the most bearers?
In Argentina, the national register counted about 11 thousand people named Costilla, more than in any other country we hold, where it is most often spelled costilla.
Where is Costilla most common?
Costilla is densest in Argentina, where the national register counts about 1 in 4.1 thousand people carrying it.
How common is the name Costilla?
In Argentina, the national register counted 10,988 people named Costilla, about 1 in 4.1 thousand residents.
How common is Costilla compared with other names?
In Argentina, Costilla is the 525th most common surname of 398,256 surnames recorded there.

What do you want to know about Costilla?

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

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, “Costilla” — the 525th most common surname in Argentina. Data snapshot 2026-10-10.

See how Costilla parses inside a full name →