Jillyn
given name · Latin script
A female name· listed as female by the registers that count names by sex
(measured from records)Officially recorded in 2 countries · latest register: Census Bureau, 2020
Jillyn is a female given name written in the Latin script, with more bearers in the United States than in any other country: 216 people, counted by the Census Bureau in 2020.
- PHPhilippines≈1 in 750Kfew records(inferred from the name graph)
- USUnited States1 in 1.5M
- NZNew Zealand≈1 in 330Kfew records
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
- 127 (measured from records)
- ≈1 in 325K (inferred from the name graph)
216 people, 2020
corpus datasets behind its best-documented spelling
strongest: highest-authority source
New Zealand, est.
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)Jillyn 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 | — | 216 | 1 in 1.5M | 216 | Jillyn | 127 |
| PH Philippines | — | ≈160 est. | ≈1 in 745K | — | Jillyn | 11 |
| GB United Kingdom | — | ≈36 est. | ≈1 in 1.9M | — | Jillyn | 4 |
| CA Canada | — | ≈28 est. | ≈1 in 1.5M | — | Jillyn | 7 |
| NZ New Zealand | — | ≈16 est. | ≈1 in 325K | — | Jillyn | 3 |
| SG Singapore | — | ≈11 est. | ≈1 in 531K | — | Jillyn | 11 |
| TC Turks & Caicos Islands | #450 | — | — | — | Jillyn | 1 |
216 people counted by Census Bureau — First Name Frequency 2020 by sex, 2020. 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 — First Name Frequency 2020 by sex. 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)3 registers and reference works attest this spelling, across 2 countries.
Register rows as of the 2026-10-09 data build.
Frequently asked questions
- Is Jillyn a male or female name?
- Jillyn is a female name. National registers that list it by sex list it as female: United States (Census Bureau, 2020).
- Which countries have the most people named Jillyn?
- In the United States, the national register counted about 216 people named Jillyn, more than in any other country we hold, where it is most often spelled jillyn. After it come Philippines, United Kingdom, Canada and New Zealand; the country table on this page ranks them.
- How common is the name Jillyn?
- In the United States, the national register counted 216 people named Jillyn in 2020, about 1 in 1.5 million residents.
- How common is Jillyn compared with other names?
- In Turks & Caicos Islands, Jillyn is the 450th most common given name of 1,146 given names recorded there.
What do you want to know about Jillyn?
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/jillynThe 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, “Jillyn” — ranked 36633rd in the United States (Census Bureau, 2020). Data snapshot 2026-10-13.