Declerck
surname · Latin script
Recorded for both men and women· direction only, no split published
Declerck is a surname written in the Latin script, with more bearers in Belgium than in any other country.
- BEBelgium1 in 2.9K(measured from records)
- FRFrance≈1 in 28K
- USUnited States1 in 686K
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.
- Belgium (measured from records)
- Sources
- 212 (measured from records)
- 1 in 2.9K (inferred from the name graph)
4,091 people, 2008
Highest-authority source
Belgium
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 in the world(measured from records)
Declerck 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 | ||||
|---|---|---|---|---|---|---|
| BE Belgium | #236 | 4,091 | 1 in 2.9K | 4.1K | Declerck | 85 |
| FR France | — | ≈2,400 est. | ≈1 in 28K | 360 | Declerck | 212 |
| US United States | — | 485 | 1 in 686K | 504 | Declerck | 135 |
| IT Italy | — | ≈140 est. | ≈1 in 449K | — | Declerck | 4 |
| GB United Kingdom | — | ≈77 est. | ≈1 in 858K | — | Declerck | 20 |
| IE Ireland | — | ≈22 est. | ≈1 in 231K | — | Declerck | 1 |
| UY Uruguay | — | 16 | 1 in 212K | 16 | — | — |
4,091 people counted by Familienaam.be — Belgian family-name frequency (population register), 2008. 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: INSEE — Fichier des noms de famille (1891–2000); Familienaam.be — Belgian family-name frequency (population register); Census Bureau — Surname Frequency 2010; Census Bureau — Surname Frequency 2020; INE Uruguay — Apellidos más frecuentes 1902–2024 (Tableau Public). 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)
- Honoré Declerckb. 1765FRFrench politician
- Richard Declerckb. 1899BEBelgian politician
- Roger Pierre Declerckb. 1929FRborn:1929-08-20|died:2001-01-03|; Declerck, Roger P.; Declerck, Roger P., 1929-; Declerck, Roger Pierre
- Leo Declerckb. 1938BEBelgian historian (1938-2021)
- Christian Declerckb. 1938BEBelgian writer and esperantist
- Willy Declerckb. 1944BEBelgian politician (1944-1992)
- Patrick Declerckb. 1953BEFrench anthropologist
- Thierry Declerckb. 1959BEresearcher
- Stéphane Declerckb. 1967BEBelgian mycologist
- Joachim Declerckb. 1979BEBelgian architect
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).
Evidence(measured from records)
Attested in 20 sources across 11 countries.
| Country | Register | Year | Count | Rank |
|---|---|---|---|---|
| BE Belgium | Familienaam.be — Belgian family-name frequency (population register) | 2008 | 4.1K | #170 |
| BE Belgium | Statbel — Noms de famille (family names) | — | 3.9K | #171 |
| US United States | Census Bureau — Surname Frequency 2020 | 2020 | 504 | #45,684 |
| US United States | Census Bureau — Surname Frequency 2010 | 2010 | 485 | #44,356 |
| US United States | Census Bureau — Surname Frequency 2000 | 2000 | 476 | #42,830 |
| FR France | INSEE — Fichier des noms de famille (1891–2000) | 1961 | 459 | — |
| FR France | INSEE — Fichier des noms de famille (1891–2000) | 1951 | 413 | — |
| FR France | INSEE — Fichier des noms de famille (1891–2000) | 1981 | 373 | — |
| FR France | INSEE — Fichier des noms de famille (1891–2000) | 1941 | 361 | — |
| FR France | INSEE — Fichier des noms de famille (1891–2000) | 1991 | 360 | — |
| FR France | INSEE — Fichier des noms de famille (1891–2000) | 1971 | 325 | — |
| FR France | INSEE — Fichier des noms de famille (1891–2000) | 1931 | 290 | — |
Reference works 3
- Nederlandse FamilienamenBank (Dutch surname bank; ex-Meertens Instituut, now CBG)2007
- Wikipedia surname tokens
- 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
- In which country does Declerck have the most bearers?
- In Belgium, the national register counted about 4.1 thousand people named Declerck, more than in any other country we hold, where it is most often spelled declerck.
- Where is Declerck most common?
- Declerck is densest in Belgium, where the national register counts about 1 in 2.9 thousand people carrying it.
- How common is the name Declerck?
- In Belgium, the national register counted 4,091 people named Declerck in 2008, about 1 in 2.9 thousand residents.
- How common is Declerck compared with other names?
- In Belgium, Declerck is the 236th most common surname of 246,397 surnames recorded there.
What do you want to know about Declerck?
Nobody replies to these one by one, but what readers ask decides what these pages answer next.
Query this name via API
curl https://api.mondonomo.ai/api/v1/name-graph/declerckThe same payload this page is built from: spellings and scripts, countries and languages, related names, and the registers that attest the form. Rate-limited for casual use; a free API key gives 1,000 requests a day, and bulk access is licensed separately.
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, “Declerck” — the 236th most common surname in Belgium. Data snapshot 2026-10-10.