Ratzlaff
surname · Latin script
(measured from records)Officially recorded in 6 countries · latest register: Census Bureau, 2020
Ratzlaff is a surname written in the Latin script, with more bearers in the United States than in any other country: 2,476 people, counted by the Census Bureau in 2010. Recorded meaning: Germanized form of Slavic personal names such as Radoslav, Ratislav, etc.
- NZNew Zealand≈1 in 29Kfew records(inferred from the name graph)
- CACanada≈1 in 58K
- PYParaguay≈1 in 73Kfew records
carrying the name, as counted by its national register where one exists and as Mondonomo estimates it elsewhere (marked ≈ and "est." on hover). One hue, darker where it is more common; hover a country for its figure.
- United States (measured from records)
- Record sources
- 284 (measured from records)
- ≈1 in 29K (inferred from the name graph)
2,476 people, 2010
corpus datasets behind its best-documented spelling
strongest: highest-authority source
New Zealand, est.
measured from records inferred from the name graph
Meaning & origin
(measured from records)Germanized form of Slavic personal names such as Radoslav, Ratislav, etc.
Cited for this meaning 1
Attested in 1 language in the etymology graph.
Where the surname Ratzlaff is found
(measured from records)Ratzlaff 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 | 2,476 | 1 in 134K | 2.5K | Ratzlaff | 284 |
| CA Canada | ≈710 est. | ≈1 in 58K | — | Ratzlaff | 80 |
| DE Germany | ≈620 est. | ≈1 in 134K | — | Ratzlaff | 62 |
| BR Brazil | 364 | 1 in 582K | 364 | Ratzlaff | 35 |
| GB United Kingdom | ≈250 est. | ≈1 in 274K | 5 | Ratzlaff | 26 |
| NZ New Zealand | ≈190 est. | ≈1 in 29K | — | Ratzlaff | 1 |
| PY Paraguay | ≈95 est. | ≈1 in 73K | — | Ratzlaff | 8 |
| SG Singapore | ≈55 est. | ≈1 in 109K | — | Ratzlaff | 3 |
2,476 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; IBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname); 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)- Raymond Ratzlaffb. 1931CACanadian politician
- Siegfried Ratzlaffb. 1934DEGerman painter
- Leonard Ratzlaffb. 1949CACanadian conductor
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)13 registers and reference works attest this spelling, across 6 countries.
Register rows as of the 2026-10-09 data build.
Frequently asked questions
- What does the name Ratzlaff mean, and where does it come from?
- Germanized form of Slavic personal names such as Radoslav, Ratislav, etc. Recorded by Wiktionary.
- Which countries have the most people with the surname Ratzlaff?
- In the United States, the national register counted about 2.5 thousand people named Ratzlaff, more than in any other country we hold, where it is most often spelled ratzlaff. After it come Canada, Germany, Brazil and United Kingdom; the country table on this page ranks them.
- How common is the name Ratzlaff?
- In the United States, the national register counted 2,476 people named Ratzlaff in 2010, about 1 in 134 thousand residents.
What do you want to know about Ratzlaff?
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/ratzlaffThe 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, “Ratzlaff” — ranked 11859th in the United States (Census Bureau, 2010). Data snapshot 2026-10-13.