Sizemore
surname · Latin script
(measured from records)Officially recorded in 4 countries · latest register: Census Bureau, 2020
Sizemore is a surname written in the Latin script, with more bearers in the United States than in any other country: 20,116 people, counted by the Census Bureau in 2010. In Liberia it is the 80th most common surname. Recorded meaning: see Sismore . Further information: This name is rare in Britain but is thriving in the USA.
- LRLiberia≈1 in 5.5Kfew records(inferred from the name graph)
- IEIreland≈1 in 15Kfew records
- USUnited States1 in 17K
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
- 391 (measured from records)
- ≈1 in 5.5K (inferred from the name graph)
20,116 people, 2010
corpus datasets behind its best-documented spelling
strongest: highest-authority source
Liberia, est.
measured from records inferred from the name graph
Meaning & origin
(measured from records)see Sismore . Further information: This name is rare in Britain but is thriving in the USA.
Cited for this meaning 2
- The Oxford Dictionary of Family Names in Britain and Ireland
- Wiktionary
Where the surname Sizemore is found
(measured from records)Sizemore 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 | — | 20,116 | 1 in 17K | 20K | Sizemore | 391 |
| GB United Kingdom | — | ≈2,900 est. | ≈1 in 24K | 9 | Sizemore | 36 |
| CA Canada | — | ≈1,800 est. | ≈1 in 23K | — | Sizemore | 25 |
| LR Liberia | #80 | ≈1,000 est. | ≈1 in 5.5K | — | Sizemore | 1 |
| AU Australia | — | ≈740 est. | ≈1 in 37K | — | Sizemore | 20 |
| IE Ireland | — | ≈350 est. | ≈1 in 15K | — | Sizemore | 1 |
| SG Singapore | — | ≈310 est. | ≈1 in 20K | — | Sizemore | 1 |
| NZ New Zealand | — | ≈290 est. | ≈1 in 18K | — | Sizemore | 15 |
20,116 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; Surnames of England and Wales (taliesin-arlein.net, Sept 2002 electoral register). 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)- Chris Costner Sizemoreb. 1927USCase depicted in The Three Faces of Eve (1927-2016)
- Tom Sizemoreb. 1961USAmerican actor (1961–2023)
- Grady Sizemoreb. 1982USAmerican professional baseball outfielder
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)11 registers and reference works attest this spelling, across 4 countries.
Register rows as of the 2026-10-09 data build.
Frequently asked questions
- What does the name Sizemore mean, and where does it come from?
- see Sismore . Further information: This name is rare in Britain but is thriving in the USA. Recorded by The Oxford Dictionary of Family Names in Britain and Ireland and Wiktionary.
- Which countries have the most people with the surname Sizemore?
- In the United States, the national register counted about 20 thousand people named Sizemore, more than in any other country we hold, where it is most often spelled sizemore. After it come United Kingdom, Canada, Liberia and Australia; the country table on this page ranks them.
- How common is the name Sizemore?
- In the United States, the national register counted 20,116 people named Sizemore in 2010, about 1 in 17 thousand residents.
- How common is Sizemore compared with other names?
- In Liberia, Sizemore is the 80th most common surname of 10,200 surnames recorded there.
What do you want to know about Sizemore?
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/sizemoreThe 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, “Sizemore” — ranked 1674th in the United States (Census Bureau, 2010). Data snapshot 2026-10-13.