Tomsen
surname · Latin script
(measured from records)Officially recorded in 10 countries · latest register: Census Bureau, 2020
/tuːmsn̩/(machine-generated) Norwegian · model-generated
Tomsen is a surname written in the Latin script, with more bearers in the United States than in any other country.
- DKDenmark1 in 143K(measured from records)
- EEEstonia≈1 in 210K
- NONorway1 in 547K
carrying the name, as counted by its national register where one exists and as Mondonomo estimates it elsewhere (marked ≈ and "est." on hover). 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)
- Record sources
- 91 (measured from records)
- 1 in 143K (inferred from the name graph)
138 people, 2010
corpus datasets behind its best-documented spelling
strongest: highest-authority source
Denmark
measured from records inferred from the name graph
Meaning & origin
No verified etymology recorded for this name yet — the entries below are drawn from usage statistics and the name graph.
Where the surname Tomsen is found
(measured from records)Tomsen 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 | 138 | 1 in 2.4M | 147 | Tomsen | 91 |
| DE Germany | ≈130 est. | ≈1 in 651K | listed | Tomsen | 34 |
| DK Denmark | 41 | 1 in 143K | 41 | Tomsen | 26 |
| AU Australia | ≈39 est. | ≈1 in 692K | — | Tomsen | 31 |
| GB United Kingdom | ≈21 est. | ≈1 in 3.4M | 9 | Tomsen | 23 |
| CH Switzerland | ≈21 est. | ≈1 in 435K | — | Tomsen | 3 |
| AT Austria | ≈18 est. | ≈1 in 505K | — | Tomsen | 12 |
| NO Norway | 10 | 1 in 547K | 10 | — | 4 |
| EE Estonia | ≈6 est. | ≈1 in 211K | listed | — | 1 |
138 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; the dfa-band-6 register; Surnames of England and Wales (taliesin-arlein.net, Sept 2002 electoral register); Danmarks Statistik — Hvor mange hedder...? (living-population name counts); SSB — Navnesøk (name-search service, living population). 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)- Trice Tomsenb. 1945Danish designer
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)Evidence
(measured from records)16 registers and reference works attest this spelling, across 10 countries.
Register rows as of the 2026-10-09 data build.
Frequently asked questions
- How do you pronounce Tomsen?
- In Norwegian /tuːmsn̩/. Transcriptions are machine-generated except where a dictionary is named.
- Which countries have the most people with the surname Tomsen?
- In the United States, the national register counted about 138 people named Tomsen, more than in any other country we hold, where it is most often spelled tomsen. After it come Germany, Denmark, Australia and United Kingdom; the country table on this page ranks them.
- Where is Tomsen most common?
- Measured as a share of residents rather than as a count, Tomsen is densest in Denmark — about 1 in 143 thousand people — even though United States holds more of our records for it.
- How common is the name Tomsen?
- In the United States, the national register counted 138 people named Tomsen in 2010, about 1 in 2.4 million residents.
What do you want to know about Tomsen?
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/tomsenThe 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, “Tomsen”. Data snapshot 2026-10-13.