Seppanen
surname · Latin script
(measured from records)Officially recorded in 5 countries · latest register: Census Bureau, 2020
/seppɑnen/(machine-generated) Finnish · model-generated
Seppanen is a surname written in the Latin script, with more bearers in Finland than in any other country.
- FIFinland1 in 333(measured from records)
- SESweden1 in 44K
- USUnited States1 in 921K
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.
- Finland (measured from records)
- Record sources
- 94 (measured from records)
- 1 in 333 (inferred from the name graph)
16,718 people
corpus datasets behind its best-documented spelling
strongest: highest-authority source
Finland
measured from records inferred from the name graph
Spellings & scripts
(measured from records)One other spelling is counted as the same name:
Locally spelled Seppänen in FI Finland, SE Sweden, EE Estonia and 1 more.
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
No verified etymology recorded for this name yet — the entries below are drawn from usage statistics and the name graph.
Attested across 12 languages in the etymology graph.
Where in the world
(measured from records)Seppanen 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 | ||||
|---|---|---|---|---|---|---|
| FI Finland | #120 | 16,718 | 1 in 333 | 17K | Seppänen | 56 |
| US United States | — | 361 | 1 in 921K | 396 | Seppanen | 94 |
| SE Sweden | — | 231 | 1 in 44K | 231 | Seppänen | 20 |
| CA Canada | — | ≈95 est. | ≈1 in 433K | — | Seppanen | 14 |
| GB United Kingdom | — | ≈29 est. | ≈1 in 2.4M | 20 | Seppanen | 10 |
| EE Estonia | — | ≈15 est. | ≈1 in 94K | 8 | Seppänen | 4 |
| NO Norway | — | ≈15 est. | ≈1 in 380K | — | Seppänen | 4 |
16,718 people counted by DVV — Nimipalvelu (Finnish name service, per-name lookup). 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: DVV — Nimipalvelu (Finnish name service, per-name lookup); Census Bureau — Surname Frequency 2010; Census Bureau — Surname Frequency 2020; Skatteverket — Sök hur många som har ett visst namn (living population); Surnames of England and Wales (taliesin-arlein.net, Sept 2002 electoral register); Statistics Estonia — per-name Population Register counts (nimed). 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).
How to address them
(machine-generated)Evidence
(measured from records)9 registers and reference works attest this spelling, across 5 countries.
| Country | Register | Year | Count | Rank |
|---|---|---|---|---|
| US United States | Census Bureau — Surname Frequency 2020 | 2020 | 396 | #55,864 |
| US United States | Census Bureau — Surname Frequency 2010 | 2010 | 361 | #56,588 |
| US United States | Census Bureau — Surname Frequency 2000 | 2000 | 354 | #54,522 |
| GB United Kingdom | Surnames of England and Wales (taliesin-arlein.net, Sept 2002 electoral register) | 2002 | 20 | #90,540 |
| US United States | wru 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
- How do you pronounce Seppanen?
- In Finnish /seppɑnen/. Transcriptions are machine-generated except where a dictionary is named.
- In which country does Seppanen have the most bearers?
- In Finland, the national register counted about 17 thousand people named Seppanen, more than in any other country we hold, where it is most often spelled seppänen.
- Where is Seppanen most common?
- Seppanen is densest in Finland, where the national register counts about 1 in 333 people carrying it.
- How common is the name Seppanen?
- In Finland, the national register counted 16,718 people named Seppanen, about 1 in 333 residents.
- How common is Seppanen compared with other names?
- In Finland, Seppanen is the 120th most common surname of 94,499 surnames recorded there.
What do you want to know about Seppanen?
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/seppanenThe 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, “Seppanen” — the 120th most common surname in Finland. Data snapshot 2026-10-13.