Billy
Meaning: Bailiff; law enforcement officer; outer wall of a castle
Origin: Old French baillif — an occupational and architectural surname, from bailli (administrator, steward)
Gender: Boy
Rank in Ireland: #164
Total births: 2,089
History: Billy has thrived in the vibrant streets of Dublin, from the Georgian squares of Merrion to the markets of Moore Street. The capital's energy and wit are embedded in this name, reflecting a city that gave the world Joyce, Wilde, and Shaw.
Explore more at Irish Baby Names on BabyNa.me
Look at the data
Every number here comes directly from Ireland’s birth records. No estimates, no averages — just the counts.
| Current rank (2025) | #39 |
| Babies named Billy in 2025 | 122 |
| Total recorded in Ireland | 2,089 |
| Peak year | 2022 (128 babies) |
| Highest rank ever | #39 |
| Years in records | 1970–2025 (45 years of data) |
| Change over last 5 years | ↑ 24 spots |
Frequently asked about Billy
What does the name Billy mean?
Billy means “Bailiff; law enforcement officer; outer wall of a castle” from Old French baillif — an occupational and architectural surname, from bailli (administrator, steward) roots.
What is the origin of the name Billy?
Billy has Old French baillif — an occupational and architectural surname, from bailli (administrator, steward) origin. The traditional meaning is “Bailiff; law enforcement officer; outer wall of a castle”.
How popular is Billy in Ireland?
Billy ranked #39 in Ireland in 2025 — given to 122 babies that year.
When was Billy most popular?
Billy peaked in 2022 with 128 babies registered that year in Ireland.
Is Billy a boy or girl name?
Billy is predominantly a boys' name in Ireland — over 90% of Billys in registered births are male.
Is the name Billy rising or falling in popularity?
Billy has risen 24 spots in the rankings over the last 5 years in Ireland — from #63 in 2020 to #39 in 2025.
How long has Billy been recorded in Ireland?
Billy appears in birth records in Ireland across 45 years — from 1970 through 2025.