Is Bo a male or female name?
Bo is used as both a female and male name. In counted records, it is associated with female usage in England and Wales at 71% and male usage in United States at 94%. 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
- 19,040
- Confidence
- high
Bo 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 |
|---|---|---|---|---|
| United States US | male | 94% | 15,103 | ssa |
| Norway NO | male | 100% | 1,151 | ssb |
| Canada CA | male | 97% | 1,104 | statcan |
| England and Wales GB | female | 71% | 982 | ons |
| Spain ES | male | 100% | 283 | ine |
| Switzerland CH | male | 73% | 168 | bfs |
| Poland PL | male | 88% | 164 | pesel |
| Ireland IE | male | 61% | 36 | cso |
| France FR | female | 60% | 25 | insee |
| Austria AT | male | 100% | 24 | statat |
Attested in 16 countries and territories
Presence means the name appears in a source for that country. Sources without counts cannot support a popularity share.
AT · AU · BE · CA · CH · CN · DK · ES · FR · GB · IE · NL · NO · PL · SE · US
Bo over time
In the United States, 0% of the babies named Bo in the 1950s were girls, against 4% in the 2020s.
| Decade of birth | United States: girls | Babies |
|---|---|---|
| 1950s | 0% | 140 |
| 1960s | 0% | 258 |
| 1970s | 2% | 575 |
| 1980s | 9% | 2,052 |
| 1990s | 5% | 2,252 |
| 2000s | 7% | 2,386 |
| 2010s | 6% | 4,083 |
| 2020s | 4% | 3,207 |
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 Bo 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=Bo&country=US" \
-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 Bo
Is Bo a male or female name?
Bo is used as both a female and male name. In counted records, it is associated with female usage in England and Wales at 71% and male usage in United States at 94%. Country context changes the answer.
Why can the result for Bo 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 Bo 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.