Thạch

surname · Latin script

Meaning: agar

(measured from records)Officially recorded in 2 countries

/tʰajk̟̚˧˨ʔ/(recorded in a dictionary) Vietnamese · from Wiktionary

Say it inExplore pronunciation →

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

  • USUnited States1 in 53K(measured from records)
  • NONorway1 in 109K
  • FIFinland1 in 186K

carrying the name, as counted by each country's national register. Countries with no figure are shown too: flat where a national register lists the name without counting it, hatched where only our records hold it. One hue, darker where it is more common; hover a country for its figure.

United States (measured from records)

6,229 people, 2010

Record sources
83 (measured from records)

corpus datasets behind its best-documented spelling

strongest: highest-authority source

1 in 53K (inferred from the name graph)

United States

measured from records inferred from the name graph

Name dossier (print, CSV)Make your nomograph ✦

Spellings & scripts

(measured from records)

One other spelling is counted as the same name:

Locally spelled Thach in US United States, SE Sweden, CH Switzerland.

Spellings marked ● are how people bearing the name write it in our records, and ○ marks a model's transliteration; click a spelling to open its page.

Meaning & origin

(measured from records)

agar

Cited for this meaning 1

  • kaikki.org Wiktionary extract (IPA + transliterations)

Attested across 19 languages in the etymology graph.

Where the surname Thạch is found

(measured from records)

Thạch 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 Thạch is recorded, by country
CountryMost common spellingSources
US United States6,2291 in 53K6.9KThach83
NO Norway501 in 109K50—5
SE Sweden441 in 232K44Thach4
CH Switzerland361 in 233K36Thach7
FI Finland301 in 186K45—3

6,229 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 2020; SSB — Navnesøk (name-search service, living population); DVV — Nimipalvelu (Finnish name service, per-name lookup); Skatteverket — Sök hur många som har ett visst namn (living population); BFS — Familiennamen der Wohnbevölkerung (surnames). 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)

Thạch is also recorded as 4 other names, grouped separately because the records behind them do not connect to the one described above.

  • English surname10 spellings in the group

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

    Languages: English, German, Dutch

    Also written Thach, Thách

  • a separate name3 spellings in the group

    Also written Thach, Thách

  • French surname4 spellings in the group

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

    Also written Thach, Thách

  • a separate name3 spellings in the group

    Also written Thḁch, Thach

26 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)

Thạch is also recorded in one other lexicon, as a different name or as an ordinary word. These are senses of the spelling, not of the name above.

  • In Vietnamese, tên riêng của Trang Dương Vương, con Lê Học

    as a nameTên Họ Người Việt Nam

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)
190019201940196019802000Shih Kien, b. 1913Shi Zhengli, b. 1964Domee Shi, b. 1989
  • Shih Kienb. 1913CNnot in their usual nameHong Kong actor (1913-2009)
  • Shi Zhenglib. 1964CNnot in their usual nameChinese virologist (1964-)
  • Domee Shib. 1989CAnot in their usual nameChinese-Canadian filmmaker, animator and storyboarding artist (born 1989)

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 Colleague,
InformalHello,

Evidence

(measured from records)

No register attests this spelling yet

None of the official registers or reference works in our corpus lists Thạch under this spelling. The statistics on this page rest on person records, and the related names are inferred from the name graph.

Register rows as of the 2026-10-09 data build.

Frequently asked questions

What does the name Thạch mean, and where does it come from?
agar Recorded by kaikki.org Wiktionary extract (IPA + transliterations).
How do you pronounce Thạch?
In Vietnamese /tʰajk̟̚˧˨ʔ/ (Wiktionary).
Which countries have the most people with the surname Thạch?
In the United States, the national register counted about 6.2 thousand people named Thạch, more than in any other country we hold, where it is most often spelled thach. After it come Norway, Sweden, Switzerland and Finland; the country table on this page ranks them.
Where is Thạch most common?
Thạch is densest in the United States, where the national register counts about 1 in 53 thousand people carrying it.
How common is the name Thạch?
In the United States, the national register counted 6,229 people named Thạch in 2010, about 1 in 53 thousand residents.

What do you want to know about Thạch?

Nobody replies to these one by one, but what readers ask decides what these pages answer next.

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Query this name via API
curl -H "X-API-Key: YOUR_KEY" https://api.mondonomo.ai/api/v1/name-graph/th%E1%BA%A1ch

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, “Thạch”. Data snapshot 2026-10-13.

See how Thạch parses inside a full name →