How popular is the baby name Leo in the United States right now? How popular was it historically? Use the popularity graph and data table below to find out! Plus, see all the blog posts that mention the name Leo.

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Popularity of the baby name Leo


Posts that mention the name Leo

Popular baby names in Monaco, 2023

Flag of Monaco
Flag of Monaco

In 2023, the Western European microstate of Monaco welcomed 804 babies — 388 baby girls and 416 baby boys. All of these babies were born in Monaco’s single public hospital, the Centre Hospitalier Princesse Grace (which was named after Grace Kelly).

Notably, though, only 229 them were born to residents of Monaco. The other 575 were born to non-residents, most of whom came from the nearby French communes of Menton, Roquebrune-Cap-Martin, and Beausoleil.

So, what were the most popular names among the (mostly French) babies born in Monaco last year? Louise and Théo.

Here are Monaco’s top 5 girl names and top 5 boy names of 2023:

Girl names

  1. Louise
  2. Chloé
  3. Emma
  4. Jade
  5. Chiara

Boy names

  1. Théo
  2. Gabriel
  3. Léo
  4. Leonardo
  5. Andrea

Last year’s newborns included “the latest member of the Grimaldi family” — a baby girl named Victoire, born in April to Louis Ducruet (the son of Princess Stéphanie, whose brother, Prince Albert, is the current head of state). The House of Grimaldi has been the reigning house of the Principality of Monaco since the late 13th century.

In 2022, the top names in Monaco were Emma and Leonardo.

Sources:

Image: Adapted from Flag of Monaco (public domain)

Popular baby names in Ireland, 2023

Flag of Ireland
Flag of Ireland

Last year, the Republic of Ireland — which covers five-sixths of the island of Ireland — welcomed roughly 55,000 babies.

What were the most popular names among these babies? Grace and Jack.

Here are Ireland’s top 50 girl names and top 50 boy names of 2023:

Girl Names

  1. Grace, 339 baby girls
  2. Fiadh (pronounced FEE-a), 300
  3. Emily, 297
  4. Sophie, 283
  5. Lily, 270
  6. Ellie, 252
  7. Mia, 242
  8. Amelia, 241 (tie)
  9. Éabha (pronounced EY-va), 241 (tie)
  10. Ella, 231
  11. Isla, 227
  12. Hannah, 226
  13. Sophia, 218
  14. Lucy, 214
  15. Ava, 207
  16. Sadie, 200
  17. Olivia, 199
  18. Freya, 188
  19. Emma, 183
  20. Chloe, 181
  21. Robyn, 180
  22. Molly, 176
  23. Anna, 166 (tie)
  24. Croía (pronounced KREE-a), 166 (tie)
  25. Evie, 165
  26. Caoimhe (pronounced KEE-va or KWEE-va), 158
  27. Saoirse (pronounced SEER-sha or SAYR-sha), 157 (tie)
  28. Cara, 157 (tie)
  29. Sofia, 156
  30. Millie, 150
  31. Aoife (pronounced EE-fa), 148
  32. Isabelle, 132
  33. Bonnie, 130
  34. Maya, 128 (tie)
  35. Ada, 128 (tie)
  36. Róisín (pronounced ROH-sheen), 127
  37. Ruby, 126
  38. Kate, 123 (tie)
  39. Alice, 123 (tie)
  40. Holly, 120 (3-way tie)
  41. Erin, 120 (3-way tie)
  42. Sadhbh (pronounced siev; rhymes with “5”), 120 (3-way tie)
  43. Leah, 119
  44. Isabella, 118 (3-way tie)
  45. Ailbhe (pronounced AL-va), 118 (3-way tie)
  46. Méabh (pronounced mayv), 118 (3-way tie)
  47. Zoe, 115
  48. Annie, 112
  49. Ivy, 111
  50. Willow, 110

Boy Names

  1. Jack, 561 baby boys
  2. Noah, 473
  3. James, 369
  4. Rían (pronounced REE-an), 339
  5. Oisín (pronounced UH-sheen or OH-sheen), 330
  6. Fionn (pronounced fyun or fyoon), 306
  7. Tadhg (pronounced tieg, like the first part of “tiger”), 301
  8. Liam, 289
  9. Cillian (pronounced KIL-ee-an), 275
  10. Daniel, 256
  11. Finn, 251
  12. Conor, 244 (tie)
  13. Charlie, 244 (tie)
  14. Seán (pronounced shawn), 240
  15. Michael, 239
  16. Leo, 237
  17. Theo, 233
  18. Thomas, 227
  19. Patrick, 221
  20. Luke, 215
  21. Tommy, 214
  22. Oliver, 211
  23. Adam, 201
  24. Harry, 198
  25. Luca, 197
  26. Darragh, 195
  27. Alex, 175
  28. Bobby, 157
  29. Cian (pronounced KEE-an or keen), 156
  30. Oscar, 154
  31. John, 152 (tie)
  32. Max, 152 (tie)
  33. Ryan, 151
  34. Páidí (pronounced PAW-dee), 150
  35. Jamie, 149
  36. Ben, 147
  37. Kai, 141 (tie)
  38. Ollie, 141 (tie)
  39. Tom, 135
  40. Matthew, 134
  41. Dylan, 132
  42. Callum, 131
  43. Sonny, 130
  44. Sam, 129
  45. Ethan, 127 (tie)
  46. Alfie, 127 (tie)
  47. David, 122
  48. Alexander, 118
  49. Mason, 116
  50. Caelan, 114

New to the girls’ top 100 were Lucia, Cadhla (pronounced KIE-la) and Síofra (pronounced SHEE-fra).

New to the boys’ top 100 were Caelan, Jude, Paddy, Éanna (pronounced EY-na) and Dáithí (pronounced DAH-hee).

The fastest-rising names in the top 100 in terms of numbers of babies were:

  • Éala (increased by 41 baby girls), Ailbhe (+40), Méabh (+36), Zara (+33), Croía (+26)
  • Caelan (increased by 58 baby boys), Páidí (+41), Arlo (+35), Tommy (+30), Mark (+28)

And the fastest-rising names in terms of rank were:

  • Síofra (rose 57 spots on the girls’ list), Lucia (+43), Éala (+38), Lottie (+36), Zara (+31)
  • Caelan (rose 58 spots on the boys’ list), Mark (+46), Ruairí (+41), Eoin (+37), Arlo (+31)
Map of the four provinces of Ireland
Ireland’s four provinces

Home to more than five million people, the Republic of Ireland is divided into four provinces. (One of these provinces, Ulster, lies largely within Northern Ireland, which is part of the UK.) The top baby names within each of the four provinces last year were…

Top Girl NameTop Boy Name
Leinster
(56% of the population)
GraceJack
Munster
(27% of pop.)
GraceJack
Connacht
(11% of pop.)
FiadhJack
Ulster [ROI portion]
(6% of pop.)
LilyJack

And what about the baby names at the other end of the spectrum?

Here’s a selection of the names that were given to just 3 babies each in Ireland last year:

Rare Girl NamesRare Boy Names
Adara, Brídín, Cushla, Dottie, Eilidh, Féile, Gillian, Hezlin, Iona, Jolene, Kalina, Lorna, Maliha, Natasha, Ocean, Philomena, Ríonach, Saffie, Tuiren, Vedika, Yasmine, ZadieAlby, Bram, Conal, Douglas, Elvis, Finnian, Gerald, Igor, Jonnie, Keenan, Lughaidh, Maitiú, Nathanael, Orin, Patryk, Rylan, Séadhna, Téidí, Ultán, Viktor, Wren, Yohan, Zachariah

Finally, here are Ireland’s 2022 rankings, if you’d like to compare last year to the year before.

Sources: Irish Babies’ Names – CSO (Irish Babies’ Names 2023), Births, Deaths and Marriages – CSO, Provinces of Ireland – Wikipedia

Image: Adapted from Flag of Ireland (public domain)
Map: Adapted from Provinces of Ireland location map by Ssolbergj under CC BY-SA 4.0.

Popular baby names in Boston (Massachusetts), 2023

Flag of Massachusetts
Flag of Massachusetts

Last year, the City of Boston welcomed a total of 20,645 babies.

What were the most popular names among these babies? Olivia and Liam.

Here are Boston’s top 20 girl names and top 20 boy names of 2023:

Girl names

  1. Olivia
  2. Emma
  3. Sophia
  4. Charlotte
  5. Sofia
  6. Isabella
  7. Grace
  8. Chloe
  9. Amelia
  10. Maya
  11. Luna
  12. Gianna
  13. Mia
  14. Nora
  15. Ava
  16. Natalie
  17. Ella
  18. Emilia
  19. Maeve
  20. Eleanor

Boy names

  1. Liam
  2. Noah
  3. Henry
  4. Leo
  5. Theodore
  6. Jack
  7. Julian
  8. James
  9. Thomas
  10. Benjamin
  11. William
  12. Luca
  13. John
  14. Ethan
  15. Logan
  16. Aiden
  17. Charles
  18. Samuel
  19. Joseph
  20. Oliver

Thomas caught my eye — it’s a top-10 boy name in Boston, but (in 2022) it only managed to rank 22nd state-wide and 45th country-wide.

Massachusetts’ top baby names of 2023 won’t be revealed until May, when the new SSA data comes out, but the state’s #1 names in 2022 were Olivia and Noah. (Noah won by a wide margin, in fact. It was given to 142 more baby boys than second-place Liam.)

Sources: Most Popular Baby Names in Boston, SSA

Image: Adapted from Flag of Massachusetts (public domain)

Popular baby names in Luxembourg, 2022

Flag of Luxembourg
Flag of Luxembourg

In 2022, the Western European country of Luxembourg welcomed 6,495 babies — 49.2% of which were girls, 50.8% of which were boys.

Among the citizens of Luxembourg, the top baby names were Mia and Leo. (Tiny names for a tiny nation!)

Among the foreign nationals — who account for nearly half of the Grand Duchy’s population — the top baby names were Emma and Gabriel.

These were the top 5 girl names and top 5 boy names among Luxembourgers in 2022:

Girl names

  1. Mia, 28 baby girls
  2. Emma, 27
  3. Eva, 20 (tie)
  4. Lea, 20 (tie)
  5. Olivia, 19

Boy names

  1. Leo, 36 baby boys
  2. Liam, 33 (tie)
  3. Noah, 33 (tie)
  4. Louis, 24 (tie)
  5. Matteo, 24 (tie)

And these were the top 5 girl names and top 5 boy names among immigrants in 2022:

Girl names (immigrants)

  1. Emma, 25 baby girls
  2. Maria, 22
  3. Sofia, 20
  4. Alice, 18
  5. Chloé, 17

Boy names (immigrants)

  1. Gabriel, 27 baby boys
  2. Lucas, 21
  3. Alexander, 15 (tie)
  4. David, 15 (tie)
  5. Adam, 14

The vast majority of Luxembourg’s immigrants come from other EU countries, such as Portugal, Italy, France, and Belgium. (Luxembourg’s first baby of 2023, in fact, was born to a Belgian family. She was named Liv.)

In 2021, the top baby names (overall) in Luxembourg were Emma and Louis.

Sources:

Image: Adapted from Flag of Luxembourg (public domain)