Is Jan a male or female name?
Jan is used as both a female and male name. In counted records, it is associated with female usage in United States at 71% and male usage in Poland at 100%. Country context changes the answer.
Result without a country hint
This is the response used when the request does not supply a country. It is a fallback, not a claim that every country has the same distribution.
- Association
- male
- Probability
- 91%
- Sample size
- 630,287
- Confidence
- high
Jan by country
Only sources that publish observation counts appear in this table. The probability is the dominant-gender share within that country source; sample sizes from different countries cover different years and should not be treated as population rankings.
| Country | Association | Probability | Sample | Source |
|---|---|---|---|---|
| Poland PL | male | 100% | 462,698 | pesel |
| United States US | female | 71% | 76,862 | ssa |
| Norway NO | male | 100% | 47,857 | ssb |
| Switzerland CH | male | 100% | 14,646 | bfs |
| Spain ES | male | 100% | 14,395 | ine |
| Austria AT | male | 100% | 6,772 | statat |
| England and Wales GB | male | 92% | 3,906 | ons |
| France FR | male | 100% | 1,715 | insee |
| Ireland IE | male | 95% | 746 | cso |
| Canada CA | male | 97% | 690 | statcan |
Attested in 26 countries and territories
Presence means the name appears in a source for that country. Sources without counts cannot support a popularity share.
AD · AT · AU · BE · CA · CH · CZ · DE · DK · EE · ES · FR · GB · IE · IL · LI · LU · NL · NO · NZ · PL · RO · SE · SI · SK · US
Jan over time
In the United States, 39.6% of the babies named Jan in the 1910s were girls, against 2.9% in the 2020s. The name has changed sides over time, so the answer depends on when a person was born. In France, 0% of the babies named Jan in the 1920s were girls, against 0% in the 2010s.
| Decade of birth | United States: girls | Babies | France: girls | Babies |
|---|---|---|---|---|
| 1910s | 40% | 278 | — | |
| 1920s | 59% | 550 | 0% | 120 |
| 1930s | 51% | 3,481 | 0% | 135 |
| 1940s | 62% | 14,064 | — | |
| 1950s | 82% | 31,882 | 0% | 110 |
| 1960s | 84% | 15,216 | 0% | 105 |
| 1970s | 71% | 4,375 | 0% | 210 |
| 1980s | 49% | 2,319 | 0% | 175 |
| 1990s | 19% | 1,224 | 0% | 185 |
| 2000s | 4% | 2,141 | 0% | 265 |
| 2010s | 4% | 973 | 0% | 245 |
| 2020s | 3% | 343 | — |
Births per decade from the US Social Security Administration (1880–2024) and INSEE (France, 1900–2025); decades with fewer than 100 babies are left out. See boys' names that became girls' names and French names that changed sex.
Look up Jan with a country
Send a reliable two-letter country code when you have one. Preserve probability, sample size, confidence and source with the category.
curl "https://namegender.com/api/v1/gender?name=Jan&country=PL" \
-H "Authorization: Bearer ng_live_xxxxxxxxxxxx"Copy failed. Select and copy the text.
Method and limits
Counted rows come from national registration sources that publish male and female totals. The attested-country list also includes sources that confirm presence but do not publish a sample size. Those two evidence types are kept separate.
Name data describes a population-level association. It does not identify an individual person's gender. Preserve unknown and low-confidence results, and do not use name inference for employment, medical, financial, insurance, legal or eligibility decisions.
Data version: 2026.10. Read the benchmark methodology and database provenance before applying a threshold.
Questions about Jan
Is Jan a male or female name?
Jan is used as both a female and male name. In counted records, it is associated with female usage in United States at 71% and male usage in Poland at 100%. Country context changes the answer.
Why can the result for Jan change by country?
A name can have different observed distributions in different populations. A country hint narrows the evidence used by the API instead of treating one global result as universal.
Does the name Jan identify a person's gender?
No. This page describes statistical associations in name records. It cannot identify an individual person and should not be used for consequential decisions.