How popular is the baby name Kaja 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 Kaja.

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Popularity of the baby name Kaja


Posts that mention the name Kaja

Popular baby names in Slovenia, 2023

Flag of Slovenia
Flag of Slovenia

Last year, the Central European country of Slovenia (not to be confused with the Central European country of Slovakia) welcomed 16,989 babies: 8,312 girls and 8,677 boys.

What were the most popular names among these babies? Ema and Luka.

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

Girl names

  1. Ema, 180 baby girls
  2. Hana, 179
  3. Zala, 177
  4. Mia, 156
  5. Julija, 147
  6. Sofija, 144
  7. Ela, 134
  8. Ajda, 125 – means “buckwheat” in Slovene.
  9. Vita, 123
  10. Mila, 118
  11. Lina, 117
  12. Eva, 114
  13. Lana, 113
  14. Zoja, 109
  15. Lara, 103
  16. Neža, 99 (tie)
  17. Nika, 99 (tie)
  18. Maša, 96
  19. Ana, 95
  20. Sofia, 92
  21. Sara, 91
  22. Zarja, 86
  23. Gaja, 81
  24. Iva, 79
  25. Brina, 77
  26. Pika, 74 – means “dot” in Slovene. In Slovenia, Pippi Longstocking’s first name is Pika.
  27. Klara, 69
  28. Lucija, 67
  29. Lia, 61
  30. Lili, 58
  31. Alina, 57 (tie)
  32. Ula, 57 (tie)
  33. Tinkara, 55
  34. Olivija, 51 (3-way tie)
  35. Ota, 51 (3-way tie)
  36. Tara, 51 (3-way tie)
  37. Olivia, 48
  38. Aurora, 47 (4-way tie)
  39. Iza, 47 (4-way tie)
  40. Maja, 47 (4-way tie)
  41. Zara, 47 (4-way tie)
  42. Naja, 46
  43. Asja, 45
  44. Kaja, 44
  45. Nina, 43
  46. Elena, 42 (tie)
  47. Manca, 42 (tie)
  48. Ava, 41
  49. Živa, 40
  50. Aria, 38 (tie)
  51. Mija, 38 (tie)

Boy names

  1. Luka, 198 baby boys
  2. Nik, 195
  3. Filip, 185
  4. Jakob, 175
  5. Mark, 173
  6. Lovro, 145
  7. Liam, 134
  8. Tim, 132
  9. Lan, 129 (tie)
  10. Oskar, 129 (tie)
  11. Oliver, 124
  12. Maj, 114
  13. Maks, 101 (tie)
  14. Žan, 101 (tie)
  15. Teo, 100
  16. Jan, 94
  17. Vid, 92
  18. Gal, 89
  19. Bine, 84
  20. Jaka, 80
  21. Leo, 77
  22. David, 75 (tie)
  23. Nace, 75 (tie)
  24. Leon, 74
  25. Izak, 71
  26. Aleks, 69
  27. Brin, 67
  28. Anže, 59 (3-way tie)
  29. Val, 59 (3-way tie)
  30. Vito, 59 (3-way tie)
  31. Lukas, 58
  32. Adam, 54 (3-way tie)
  33. Tine, 54 (3-way tie)
  34. Žiga, 54 (3-way tie)
  35. Anej, 53
  36. Svit, 50 – means “dawn” in Slovene.
  37. Nejc, 49
  38. Bor, 48 (4-way tie) – means “pine tree” in Slovene. It’s also a short form of bor- names, like Boris.
  39. Erik, 48 (4-way tie)
  40. Mateo, 48 (4-way tie)
  41. Matic, 48 (4-way tie)
  42. Aleksej, 47 (tie)
  43. Jon, 47 (tie)
  44. Lenart, 46 (tie)
  45. Matija, 46 (tie)
  46. Lev, 44
  47. Benjamin, 42
  48. Erazem, 41
  49. Tian, 40
  50. Teodor, 39

The girls’ top 100 included Loti (60th), Nuša (86th), Nikolina (90th), and Inja (94th).

The boys’ top 100 included Ožbej (70th), Tilen (73rd), Nai (95th), and the vowelless Crt (97th) — though that “C” should have a caron (which signifies a ch sound).

I didn’t post about Slovenia’s top baby names of 2022, but here are Slovenia’s 2021 rankings.

Sources: Top 100 baby names in 2023 – Statistical Office of the Republic of Slovenia, Births, 2023 – Statistical Office of the Republic of Slovenia, Behind the Name

Image: Adapted from Flag of Slovenia (public domain)

Popular baby names in Poland, 2023

Flag of Poland
Flag of Poland

Last year, the European country of Poland welcomed approximately 272,000 babies.

What were the most popular names among all these babies? Zofia and Nikodem.

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

Girl names

  1. Zofia, 4,968 baby girls
  2. Zuzanna, 4,800
  3. Laura, 4,602
  4. Hanna, 4,565
  5. Maja, 4,461
  6. Julia, 4,254
  7. Oliwia, 3,846
  8. Pola, 3,692
  9. Alicja, 3,593
  10. Maria, 3,137
  11. Lena, 2,966
  12. Antonina, 2,912
  13. Emilia, 2,785
  14. Amelia, 2,759
  15. Klara, 2,660
  16. Michalina, 2,644
  17. Iga, 2,563
  18. Liliana, 2,561
  19. Wiktoria, 2,531
  20. Helena, 2,511
  21. Marcelina, 2,351
  22. Gabriela, 1,883
  23. Aleksandra, 1,878
  24. Nela, 1,768
  25. Kornelia, 1,761
  26. Lucja, 1,732
  27. Blanka, 1,636
  28. Anna, 1,581
  29. Nadia, 1,565
  30. Natalia, 1,441
  31. Lilianna, 1,422
  32. Jagoda, 1,410
  33. Mia, 1,232
  34. Milena, 1,148
  35. Róza, 1,132
  36. Kaja, 1,127
  37. Rozalia, 1,103
  38. Anastazja, 1,063
  39. Nina, 1,001
  40. Aniela, 984
  41. Weronika, 959
  42. Sara, 937
  43. Nikola, 917
  44. Barbara, 892
  45. Aurelia, 880
  46. Matylda, 845
  47. Liwia, 779
  48. Karolina, 752
  49. Martyna, 712
  50. Agata, 656

Boy names

  1. Nikodem, 6,532 baby boys
  2. Antoni, 5,663
  3. Jan, 5,638
  4. Aleksander, 5,625
  5. Franciszek, 4,965
  6. Leon, 4,916
  7. Jakub, 4,474
  8. Ignacy, 4,166
  9. Mikolaj, 4,081
  10. Stanislaw, 3,874
  11. Filip, 3,506
  12. Szymon, 3,269
  13. Wojciech, 3,078
  14. Adam, 2,889
  15. Tymon, 2,782
  16. Marcel, 2,759
  17. Kacper, 2,684
  18. Maksymilian, 2,655
  19. Oliwier, 2,578
  20. Wiktor, 2,347
  21. Michal, 2,183
  22. Igor, 1,899
  23. Julian, 1,855 (tie)
  24. Milosz, 1,855 (tie)
  25. Tymoteusz, 1,724 (tie)
  26. Gabriel, 1,724 (tie)
  27. Oskar, 1,683
  28. Piotr, 1,630
  29. Dawid, 1,276
  30. Bruno, 1,186
  31. Hubert, 1,159
  32. Krzysztof, 1,069
  33. Natan, 1,065
  34. Bartosz, 1,053
  35. Dominik, 1,022
  36. Mateusz, 900
  37. Cezary, 886
  38. Henryk, 880
  39. Alan, 869
  40. Karol, 866
  41. Tadeusz, 861
  42. Fabian, 837
  43. Tomasz, 830
  44. Maciej, 783
  45. Teodor, 761
  46. Ksawery, 752
  47. Milan, 733
  48. Artur, 722
  49. Leo, 669
  50. Pawel, 640

(Because L-with-a-stroke and Z-with-an-overdot don’t render properly on my site, you’ll have to imagine they exist in several of the above: the girl names Lucja and Róza, and the boy names Mikolaj, Stanislaw, Michal, Milosz, and Pawel.)

Poland’s data goes all the way down to names with just two instances of usage, so here’s a sampling of the rare baby names at the opposite end of the spectrum:

Rare girl namesRare boy names
Aryna, Burla, Christine, Dziyana, Esti, Flavia, Goja, Hafsa, Iwanna, Jutrzenka, Kleopatra, Latika, Miszel, Nasturcja, Oryslava, Polianna, Raya, Svitlana, Tinatin, Ursula, Vienna, Wiera, Yevahelina, ZoryanaArseniusz, Bozydar, Czarek, Dachi, Ege, Ferdinand, Gabrielius, Hleb, Ioannis, Joszko, Kerem, Lotar, Maciek, Nicolai, Oktawiusz, Przemek, Reece, Szarbel, Tymek, Umut, Vitali, Wolfgang, Yanis, Zawisza

On the girls’ side: Jutrzenka means “dawn” in Polish, and Nasturcja is the Polish word for nasturtium (a type of flower).

On the boys’ side: Hleb (Belarusian) comes from Gleb (Russian), which comes from Guðleifr (Old Norse: “god” + “heir”), and Zawisza can be traced back to a Slavic word meaning “envy.”

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

Sources: Imiona nadawane dzieciom w Polsce – Otwarte Dane, Births drop to new postwar low in Poland as population falls almost 1 million in a decade – Notes from Poland, Behind the Name

Image: Adapted from Flag of Poland (public domain)

Popular baby names in Poland, 2022

Flag of Poland
Flag of Poland

The country of Poland is located in Central Europe and shares a border with seven other countries (including Russia, Germany, and Slovakia).

Last year, Poland welcomed approximately 305,000 babies — 290,000 of which were born to Polish parents and 15,000 of which were born to non-Polish parents (many of them Ukrainian refugees).

What were the most popular names among all these babies? Zofia and Antoni.

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

Girl Names

  1. Zofia, 5,714 baby girls
  2. Zuzanna, 5,558
  3. Hanna, 5,261
  4. Laura, 5,095
  5. Maja, 4,979
  6. Julia, 4,936
  7. Oliwia, 4,440
  8. Alicja, 4,261
  9. Pola, 4,087
  10. Lena, 3,811
  11. Maria, 3,732
  12. Emilia, 3,188
  13. Amelia, 3,143
  14. Antonina,3,133
  15. Wiktoria, 3,037
  16. Liliana, 2,860
  17. Iga, 2,847 – a diminutive of either Jadwiga or Ignacja
  18. Michalina, 2,749
  19. Marcelina, 2,720
  20. Helena, 2,680
  21. Klara, 2,523
  22. Aleksandra, 2,370
  23. Gabriela, 2,220
  24. Anna, 1,965
  25. Kornelia, 1,927
  26. Lucja, 1,862
  27. Blanka, 1,853
  28. Nela, 1,840
  29. Nadia, 1,792
  30. Natalia, 1,734
  31. Jagoda, 1,554
  32. Lilianna, 1,472
  33. Milena, 1,467
  34. Anastazja, 1,297
  35. Mia, 1,217
  36. Kaja, 1,213
  37. Nikola, 1,109
  38. Nina, 1,102
  39. Weronika, 1,081
  40. Róza, 1,074
  41. Rozalia, 1,072
  42. Aniela, 1,039
  43. Sara, 998
  44. Barbara, 993
  45. Matylda, 968
  46. Karolina, 887
  47. Martyna, 840
  48. Liwia, 821
  49. Agata, 811
  50. Eliza, 756

Boy Names

  1. Antoni, 6,670 baby boys
  2. Jan, 6,341
  3. Aleksander, 6,201
  4. Nikodem, 6,155
  5. Franciszek, 5,696
  6. Jakub, 5,535
  7. Leon, 5,091
  8. Mikolaj, 4,499
  9. Stanislaw, 4,265
  10. Filip, 4,107
  11. Ignacy, 4,086
  12. Szymon, 4,069
  13. Wojciech, 3,539
  14. Adam, 3,348
  15. Kacper, 3,251
  16. Tymon, 3,164
  17. Marcel, 3,081
  18. Maksymilian, 3,055
  19. Michal, 2,758
  20. Wiktor, 2,709
  21. Oliwier, 2,551
  22. Tymoteusz, 2,278
  23. Milosz, 2,234
  24. Igor, 2,226
  25. Julian, 2,040
  26. Piotr, 1,987
  27. Oskar, 1,932
  28. Gabriel, 1,712
  29. Dawid, 1,489
  30. Krzysztof, 1,352
  31. Bartosz, 1,315
  32. Dominik, 1,271
  33. Natan, 1,222
  34. Bruno, 1,214
  35. Mateusz, 1,209
  36. Hubert, 1,152
  37. Karol, 1,141
  38. Alan, 1,058
  39. Fabian, 1,014
  40. Tomasz, 977
  41. Maciej, 975
  42. Henryk, 948
  43. Cezary, 892 (tie)
  44. Tadeusz, 892 (tie)
  45. Artur, 858
  46. Ksawery, 849 – a form of Xavier
  47. Pawel, 753
  48. Milan, 727
  49. Daniel, 717
  50. Kazimierz, 674 (tie)
  51. Kuba, 674 (tie)

(Because L-with-a-stroke doesn’t render properly on my site, you’ll have to imagine one exists in several of the above: the girl name Lucja and the boy names Mikolaj, Stanislaw, Michal, Milosz, and Pawel.)

Poland’s data goes all the way down to names with just two instances of usage, so here’s a sampling of the rare baby names at the opposite end of the spectrum:

Rare Girl NamesRare Boy Names
Aglaja, Beyza, Celestyna, Dasza, Esenia, Freyja, Harper, Illia, Jaga, Koralia, Lilibet, Melanija, Nurana, Oktavia, Penelope, Radochna, Sviatoslava, Tekla, Ustina, Vasylisa, Yeseniya, ZytaAffan, Bronislav, Caspian, Demjan, Elisey, Florin, Gajusz, Henrik, Igo, Jarogniew, Klimek, Lian, Matwej, Neo, Przemek, Rishi, Salwador, Timo, Vadzim, Witosz, Yuri, Zorian

The two Lilibets were likely named with Prince Harry and Meghan Markle’s daughter Lilibet Diana (b. 2021) in mind.

Finally, here are Poland’s 2021 rankings, if you’d like to compare last year to the year before.

Sources: Imiona nadawane dzieciom w Polsce – Otwarte Dane, Poland’s birth rate in decline shows study – The First News, Behind the Name

Image: Adapted from Flag of Poland (public domain)

Popular baby names in Slovenia, 2021

Flag of Slovenia
Flag of Slovenia

The country of Slovenia is located in Central Europe and bordered by Italy, Austria, Hungary, and Croatia.

Last year, Slovenia welcomed almost 19,000 babies — over 9,000 girls and nearly 10,000 boys.

What were the most popular names among these babies? Ema and Filip.

Here are Slovenia’s top 50 girl names and top 50 boy names of 2021:

Girl Names

  1. Ema, 248 baby girls
  2. Zala, 219
  3. Mia, 202
  4. Julija, 188
  5. Hana, 178
  6. Sofija, 159
  7. Ajda, 145 (tie)
  8. Vita, 145 (tie)
  9. Lana, 135
  10. Neža, 130 (tie)
  11. Nika, 130 (tie)
  12. Mila, 129 (tie)
  13. Sara, 129 (tie)
  14. Ela, 124
  15. Ana, 118 (tie)
  16. Eva, 118 (tie)
  17. Maša, 117
  18. Zoja, 116
  19. Zarja, 114
  20. Lara, 108
  21. Iva, 99
  22. Sofia, 97
  23. Brina, 96
  24. Iza, 94
  25. Lina, 92
  26. Gaja, 90
  27. Klara, 84
  28. Kaja, 78
  29. Ula, 72
  30. Tara, 66
  31. Alina, 59 (tie)
  32. Lia, 59 (tie)
  33. Lili, 55 (tie)
  34. Nina, 55 (tie)
  35. Mija, 54
  36. Neja, 53 — a diminutive of Jerneja
  37. Lucija, 52
  38. Maja, 51
  39. Tinkara, 50
  40. Inja, 48
  41. Sia, 47 (tie)
  42. Živa, 47 (tie)
  43. Pia, 46
  44. Ava, 45 (3-way tie)
  45. Naja, 45 (3-way tie)
  46. Ota, 45 (3-way tie)
  47. Manca, 43 (3-way tie)
  48. Olivija, 43 (3-way tie)
  49. Viktorija, 43 (3-way tie)
  50. Tia, 41

Boy Names

  1. Filip, 264 baby boys
  2. Luka, 239 — had been the #1 name for 22 consecutive years before slipping in 2021
  3. Nik, 217
  4. Mark, 211
  5. Jakob, 197
  6. Liam, 191
  7. Lan, 173
  8. Oskar, 165 (tie)
  9. Tim, 165 (tie)
  10. Lovro, 139
  11. Žan, 128
  12. Maks, 127
  13. Jaka, 124
  14. Gal, 123 (tie)
  15. Vid, 123 (tie)
  16. Jan, 114
  17. Maj, 111
  18. Oliver, 110
  19. Bine, 92
  20. David, 89
  21. Leon, 88
  22. Anže, 85
  23. Val, 83
  24. Žiga, 81
  25. Brin, 76 (tie)
  26. Matija, 76 (tie)
  27. Nejc, 69 — a diminutive of Jernej
  28. Adam, 68 (3-way tie)
  29. Bor, 68 (3-way tie)
  30. Teo, 68 (3-way tie)
  31. Anej, 67 (3-way tie)
  32. Izak, 67 (3-way tie)
  33. Lukas, 67 (3-way tie)
  34. Erik, 66
  35. Nace, 65
  36. Lev, 64
  37. Matic, 63
  38. Patrik, 62
  39. Leo, 60
  40. Aleks, 56
  41. Tine, 55
  42. Vito, 54
  43. Lenart, 52 (3-way tie)
  44. Matevž, 52 (3-way tie)
  45. Miha, 52 (3-way tie)
  46. Aleksej, 51 (tie)
  47. Aljaž, 51 (tie)
  48. Benjamin, 49 (3-way tie)
  49. Kris, 49 (3-way tie)
  50. Tilen, 49 (3-way tie)

Overall, about 1,300 girl names and about 1,300 boy names were bestowed in Slovenia last year. Roughly 60% of these names were used just once.

I didn’t blog about Slovenia’s 2020 rankings, but I did post the 2019 rankings, which were topped by Zala and Luka.

Sources: Top 100 baby names in 2021 – Statistical Office of the Republic of Slovenia; Births, 2021 – Statistical Office of the Republic of Slovenia

Image: Adapted from Flag of Slovenia (public domain)