How popular is the baby name Theo 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 Theo.

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Popularity of the baby name Theo


Posts that mention the name Theo

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 Norway, 2022

Flag of Norway
Flag of Norway

Last year, the Scandinavian country of Norway (which shares a border with three other countries: Sweden, Finland, and Russia) welcomed 51,480 babies — over 25,000 girls and nearly 26,500 boys.

What were the most popular names among these babies? Nora for girls, and tie between Jakob and Noah for boys.

Here are Norway’s top 50 girl names and top 50 boy names of 2022:

Girl Names

  1. Nora/Norah/Noora, 359 baby girls
  2. Emma, 337
  3. Olivia, 331
  4. Ella, 326
  5. Sofie/Sophie, 315
  6. Leah/Lea, 288
  7. Frida, 269
  8. Iben, 266 (tie)
  9. Sofia/Sophia, 266 (tie)
  10. Sara/Sarah/Zara, 262
  11. Maja/Maya/Maia, 258
  12. Ingrid, 253
  13. Alma, 249
  14. Selma, 247
  15. Emilie, 243
  16. Ada, 242
  17. Astrid/Astri, 235
  18. Hedda, 233
  19. Anna, 218
  20. Amalie, 211
  21. Ellinor, 210
  22. Aurora, 208
  23. Hedvig, 205
  24. Tiril/Tirill, 203
  25. Hanna/Hannah, 198
  26. Eva, 195
  27. Jenny, 186
  28. Mia, 184
  29. Vilde, 180
  30. Mathilde/Matilde, 177
  31. Ida, 176
  32. Lilly/Lily, 172
  33. Linnea/Linea/Linnéa, 163 (tie)
  34. Live, 163 (tie)
  35. Marie, 151
  36. Ellie, 150
  37. Sigrid, 149
  38. Thea, 145
  39. Julie, 143
  40. Amelia, 142 (tie)
  41. Luna, 142 (tie)
  42. Amanda, 141 (tie)
  43. Solveig, 141 (tie)
  44. Tuva, 139
  45. Mie, 133
  46. Agnes, 131
  47. Josefine/Josephine, 129
  48. Hermine, 121 (3-way tie)
  49. Signe, 121 (3-way tie)
  50. Ylva, 121 (3-way tie) – based on the Old Norse word ulfr, meaning “wolf.”

Boy Names

  1. Jakob/Jacob, 414 baby boys (tie)
  2. Noah/Noa, 414 (tie)
  3. Emil, 405 (tie)
  4. Lucas/Lukas, 405 (tie)
  5. Oliver, 382
  6. Isak/Isac/Isaac, 381
  7. William, 348
  8. Filip/Philip/Fillip/Phillip, 343
  9. Aksel/Axel, 321 (tie)
  10. Theodor/Teodor, 321 (tie)
  11. Ludvig/Ludvik, 310
  12. Oskar/Oscar, 300
  13. Liam, 282
  14. Johannes, 280
  15. Elias, 277
  16. Kasper/Casper/Kacper, 276
  17. Magnus, 270 (tie)
  18. Tobias, 270 (tie)
  19. Henrik, 263
  20. Mathias/Matias, 247 (tie)
  21. Olav, 247 (tie)
  22. Viktor/Victor/Wiktor, 235
  23. Ulrik, 230
  24. Matheo, 223
  25. Adam, 215
  26. Gustav, 208
  27. Muhammad/Mohammad/Mohammed/Mohamed/Muhammed, 206
  28. Sander, 205
  29. Alfred, 203
  30. Håkon/Haakon, 201 (tie)
  31. Theo/Teo, 201 (tie)
  32. Herman/Hermann, 185
  33. Benjamin, 179
  34. Jonas, 178
  35. Mikkel, 174
  36. Odin, 165
  37. Birk, 164
  38. Johan, 163 (tie)
  39. Leon, 163 (tie)
  40. Felix, 162
  41. Even, 157 (tie)
  42. Sebastian, 157 (tie)
  43. Vetle, 156 – based on the Old Norse word vetrliði, meaning “winter-farer,” and, by extension, “bear cub” (i.e., a bear that has lived one winter).
  44. Iver, 155
  45. Leo, 150
  46. Jens, 144 (tie)
  47. Markus/Marcus, 144 (tie)
  48. Alexander/Aleksander, 140
  49. Kristian/Christian, 133
  50. Sverre, 132 – based on the Old Norse verb sverra, meaning “to spin or swirl about,” and, by extension, “troublemaker.”

The two fastest-climbing names were Birk, which rose from 70th to 37th on the boys’ list, and Hedvig, which rose from 38th to 23rd on the girls’ list.

Home to more than 5.4 million people, Norway is — at the moment — divided into 11 administrative regions, or “counties.” (The original 19 counties were reduced to 11 in 2020; the current 11 counties will be expanded to 15 in 2024.)

Map of the 11 administrative regions of Norway
Norway’s 11 administrative regions

The top baby names within each of Norway’s 11 counties last year were…

Girl namesBoy names
Viken1. Olivia, 85
2. Leah, 76
3. Ella, 75
4. Emma, 71
5. Ingrid, 67
1. Noah, 102
2. Oliver, 97
3. Jakob, 95
4. Theodor, 88
5. Filip/Lucas/Oskar, 81 each (3-way tie)
Oslo1. Sofia, 63
2. Hedvig, 56
3. Nora, 50
4. Sofie, 48
5. Ada/Anna, 47 each (tie)
1. Mohammad, 77
2. Jakob, 65
3. Olav, 59
4. Noah, 57 (tie)
5. William, 57 (tie)
Vestland1. Ella, 52
2. Nora, 51
3. Emma, 50
4. Sara, 43
5. Sofie, 41
1. Emil, 61
2. Jakob, 53
3. Oliver, 48
4. Ulrik, 47
5. Lucas, 44
Rogaland1. Sara, 37
2. Frida, 36
3. Maja, 32 (3-way tie)
4. Nora, 32 (3-way tie)
5. Sofie, 32 (3-way tie)
1. Emil, 43
2. Noah, 42
3. Filip, 38 (tie)
4. Oliver, 38 (tie)
5. Lucas, 35
Trøndelag1. Selma, 33
2. Ada, 32 (4-way tie)
3. Emma, 32 (4-way tie)
4. Leah, 32 (4-way tie)
5. Nora, 32 (4-way tie)
1. Emil, 50
2. Oliver, 47
3. Aksel, 46 (tie)
4. Isak, 46 (tie)
5. Magnus, 38
Vestfold og Telemark1. Nora, 30
2. Olivia, 28
3. Ella, 23
4. Iben, 21
5. Emma/Sofie, 20 each (tie)
1. Emil, 34 (tie)
2. Noah, 34 (tie)
3. Lucas, 33
4. William, 31
5. Jakob, 29
Innlandet1. Aurora, 25 (tie)
2. Sofie, 25 (tie)
3. Ella, 24
4. Emma/Ingrid/Nora/Olivia, 22 each (4-way tie)
1. Emil, 35
2. Lucas, 31
3. Magnus, 29
4. Filip, 28
5. Oliver, 25
Agder1. Emma, 31 (tie)
2. Olivia, 31 (tie)
3. Nora, 27
4. Ella, 26
5. Leah, 24
1. Lucas, 40
2. Isak, 27 (tie)
3. Theodor, 27 (tie)
4. Henrik, 26 (tie)
5. Noah, 26 (tie)
Møre og Romsdal1. Anna, 18 (tie)
2. Nora, 18 (tie)
3. Olivia, 17 (tie)
4. Selma, 17 (tie)
5. Alma/Aurora/Emma, 16 each (3-way tie)
1. Noah, 26
2. Kasper, 22
3. Emil, 20 (tie)
4. Isak, 20 (tie)
5. Lucas, 19
Troms og Finnmark1. Ella, 18
2. Anna, 16
3. Amalie/Astrid/Emilie/Maja/Olivia/Sigrid, 14 each (6-way tie)
1. Jakob, 27
2. Isak, 25
3. Emil, 23
4. Johannes, 22
5. Elias, 19
Nordland1. Nora, 21
2. Ella, 15 (tie)
3. Iben, 15 (tie)
4. Emma/Frida/Ingrid/Signe, 12 each (4-way tie)
1. Isak, 29
2. Jakob, 24
3. Filip/Henrik/William, 17 each (3-way tie)

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

Single-use names were given to nearly 8% of the baby girls and 7% of the baby boys born in Norway last year. We don’t have access to these unique names — the country doesn’t release names given to three or fewer babies per year (due to privacy concerns) — but here’s a selection of the names given to four babies:

Rare girl namesRare boy names
Aase, Agathe, Annabelle, Anneli, Anny, Aud, Azra, Bjørg, Borghild, Cassandra, Cecilia, Daria, Eden, Elizabeth, Emely, Felicia, Gabrielle, Grete, Helen, Helin, Henrikke, Irina, Kamila, Kate, Kaya, Leni, Lidia, Marita, Martyna, Nadine, Norunn, Ragne, Ruby, Savannah, Signy, Silvia, Solvår, SylviaAbbas, Abdul, Adem, Ahmet, Ammar, Ansgar, Are, Arvid, Bogdan, Brynjar, Christer, Dani, Denis, Evald, Fred, Haris, Hassan, Hauk, Hubert, Hussain, Idar, Ingmar, Jamal, Jaran, Jarl, Kenan, Mahad, Mattias, Mehdi, Morgan, Niclas, Nikola, Oddvar, Olivier, Ove, Ravn, Roald, Rolf, Rune, Sean, Sigvald, Stanislaw, Steinar, Svein, Søren, Tønnes, Viggo, Wojciech, Yasin, Yosef, Youssef

Finally, here’s a link to Norway’s 2021 rankings, if you’d like to compare last year to the year before.

Sources: Navn – Statistics Norway, Sjekk listen over de mest populære navnene i 2022 – Statistics Norway, Uvanlige navn – før og nå – Statistics Norway, Births – Statistics Norway, Regions of Norway – Wikipedia, Counties of Norway – Wikipedia, Behind the Name, Nordic Names

Image: Adapted from Flag of Norway (public domain)
Map: Nye fylker by Furfur (public domain)

Popular baby names in Austria, 2022

Flag of Austria
Flag of Austria

The country of Austria, home to nearly 9 million people, is located in Central Europe and shares a border with eight other countries (including Germany, Italy, and Switzerland).

Last year, Austria welcomed 82,627 babies — 40,060 girls and 42,567 boys.

What were the most popular names among these babies? Emma and Maximilian.

Here are Austria’s top 25 girl names and top 25 boy names of 2022:

Girl Names

  1. Emma, 659 baby girls
  2. Emilia, 632
  3. Marie, 625
  4. Mia, 593
  5. Anna, 589
  6. Sophia, 549
  7. Laura, 534
  8. Valentina, 525
  9. Lena, 518
  10. Johanna, 502
  11. Lea, 483
  12. Hannah, 467
  13. Leonie, 426
  14. Sophie, 421
  15. Lina, 410
  16. Luisa, 380
  17. Lara, 376
  18. Elena, 362
  19. Ella, 356
  20. Nora, 351
  21. Hanna, 318
  22. Olivia, 310
  23. Magdalena, 309
  24. Helena, 290
  25. Mila, 287

Boy Names

  1. Maximilian, 735 baby boys
  2. Felix, 722
  3. Paul, 708
  4. Jakob, 693
  5. Noah, 671
  6. Elias, 666
  7. David, 636
  8. Jonas, 629
  9. Leon, 616
  10. Lukas, 587
  11. Tobias, 560
  12. Leo, 498
  13. Matteo, 469
  14. Alexander, 468
  15. Fabian, 454
  16. Julian, 446
  17. Valentin, 429
  18. Moritz, 417
  19. Simon, 406
  20. Theo, 399
  21. Luca, 386
  22. Anton, 379
  23. Liam, 352
  24. Raphael, 348
  25. Samuel, 346

The top names in Austria in 2021 were Marie and Paul.

Sources: First names of newborns – Statistics Austria, Atlas der Vornamen – Statistics Austria, Demographic characteristics of newborns – Statistics Austria

Image: Adapted from Flag of Austria (public domain)