Is Lacy a male or female name?
Lacy is predominantly associated with female records in the available name data. Without a country hint, NameGender returns female at 76%, based on 27,226 observations.
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
- female
- Probability
- 76%
- Sample size
- 27,226
- Confidence
- high
Lacy 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 | female | 76% | 26,615 | ssa |
| England and Wales GB | female | 100% | 428 | ons |
| Canada CA | female | 100% | 180 | statcan |
Attested in 5 countries and territories
Presence means the name appears in a source for that country. Sources without counts cannot support a popularity share.
AU · CA · GB · IE · US
Lacy over time
In the United States, 27.1% of the babies named Lacy in the 1880s were girls, against 98% in the 2020s. The name has changed sides over time, so the answer depends on when a person was born.
| Decade of birth | United States: girls | Babies |
|---|---|---|
| 1880s | 27% | 133 |
| 1890s | 45% | 280 |
| 1900s | 38% | 394 |
| 1910s | 24% | 1,030 |
| 1920s | 18% | 1,342 |
| 1930s | 16% | 1,060 |
| 1940s | 16% | 1,037 |
| 1950s | 18% | 946 |
| 1960s | 38% | 905 |
| 1970s | 81% | 2,115 |
| 1980s | 97% | 8,698 |
| 1990s | 96% | 4,534 |
| 2000s | 97% | 2,431 |
| 2010s | 97% | 1,364 |
| 2020s | 98% | 346 |
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 Lacy 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=Lacy&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 The attested-country list also includes sources that confirm presence but do not publish a sample size.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 Lacy
Is Lacy a male or female name?
Lacy is predominantly associated with female records in the available name data. Without a country hint, NameGender returns female at 76%, based on 27,226 observations.
Why can the result for Lacy 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 Lacy 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.