A-U
surname · Latin script
A-U is a surname written in the Latin script, with more bearers in the United States than in any other country: 7,148 people, counted by the Census Bureau in 2010.
- USUnited States1 in 47K(measured from records)
- NLNetherlands1 in 86K
- SESweden1 in 159K
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
- 103 (measured from records)
- 1 in 47K (inferred from the name graph)
7,148 people, 2010
corpus datasets behind its best-documented spelling
strongest: highest-authority source
United States
measured from records inferred from the name graph
Spellings & scripts
(measured from records)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)[천문] 천문단위, astronomical unit
Cited for this meaning 2
- 국립국어원 외래어 표기 용례 자료 (NIKL loanword/foreign-name transcription examples)
- Wiktionary
Where the surname A-U is found
(measured from records)A-U 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 | 7,148 | 1 in 47K | 7.5K | — | 103 |
| NL Netherlands | 202 | 1 in 86K | 202 | — | 4 |
| SE Sweden | 64 | 1 in 159K | 64 | — | 1 |
| PL Poland | 47 | 1 in 815K | 25 | — | — |
| CH Switzerland | 34 | 1 in 247K | 34 | — | 3 |
| DK Denmark | 30 | 1 in 196K | 30 | — | — |
| NO Norway | 28 | 1 in 195K | 28 | — | — |
7,148 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; CBG Familienamenbank — Dutch surname bearer counts (GBA/BRP 2007); Skatteverket — Sök hur många som har ett visst namn (living population); BFS — Familiennamen der Wohnbevölkerung (surnames); Danmarks Statistik — Hvor mange hedder...? (living-population name counts); SSB — Navnesøk (name-search service, living population); dane.gov.pl — PESEL living persons (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).
Evidence
(measured from records)No register attests this spelling yet
Frequently asked questions
- Which countries have the most people with the surname A-U?
- In the United States, the national register counted about 7.1 thousand people named A-U, more than in any other country we hold. After it come Netherlands, Sweden, Poland and Switzerland; the country table on this page ranks them.
- Where is A-U most common?
- A-U is densest in the United States, where the national register counts about 1 in 47 thousand people carrying it.
- How common is the name A-U?
- In the United States, the national register counted 7,148 people named A-U in 2010, about 1 in 47 thousand residents.
What do you want to know about A-U?
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/a-uThe 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, “A-U” — ranked 4606th in the United States (Census Bureau). Data snapshot 2026-10-13.