How popular is the baby name Theodore in the United States right now? How popular was it historically? Find out using the graph below! Plus, check out all the blog posts that mention the name Theodore.

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Popularity of the Baby Name Theodore


Posts that Mention the Name Theodore

Popular baby names in New South Wales, 2021

new south wales

According to the NSW Registry of Births, Deaths and Marriages, the most popular baby names in the Australian state last year were Amelia and Oliver.

Here are New South Wales’s top 10 girl names and top 10 boy names of 2021:

Girl Names

  1. Amelia
  2. Olivia
  3. Charlotte
  4. Isla
  5. Ava
  6. Mia
  7. Grace
  8. Chloe
  9. Ella
  10. Matilda

Boy Names

  1. Oliver
  2. Noah
  3. Jack
  4. Henry
  5. William
  6. Leo
  7. Lucas
  8. Theodore
  9. Levi
  10. Thomas

In the boys’ top 10, Theodore and Levi replaced Liam and Elijah.

In the girls’ top 10, Ella and Matilda replaced Sophia and Zoe. (“[I]t’s good to see Matilda waltzing up the charts,” quipped NSW Attorney-General Mark Speakman.)

In 2020, the top names were also Amelia and Oliver.

Sources: Popular Baby Names | NSW Government, Matilda waltzes into the list of top baby names

Top lengths of baby names in the United States, 2021

Which lengths were the most and least popular for U.S. baby names in 2021?

Top length for girl names: 6 letters

For baby girls, the most-used length was 6 letters, followed by 5 and 7.

Graph of length popularity for U.S. baby girl names, 2021

The most popular girl names per length were…

  • 2 letters (over 200 baby girls): Bo, Jo, Zo, An, Vy, Io
  • 3 letters (over 58,300): Ava, Mia, Zoe, Ivy, Eva, Ada
  • 4 letters (over 223,800): Emma, Luna, Ella, Aria, Mila, Nora
  • 5 letters (over 348,000): Sofia, Avery, Emily, Chloe, Layla, Hazel
  • 6 letters (over 466,100): Olivia, Amelia, Sophia, Evelyn, Harper, Camila
  • 7 letters (over 307,900): Eleanor, Abigail, Madison, Addison, Lillian, Paisley
  • 8 letters (over 142,000): Isabella, Scarlett, Penelope, Victoria, Brooklyn, Savannah
  • 9 letters (over 71,800): Charlotte, Elizabeth, Valentina, Josephine, Gabriella
  • 10 letters (over 8,000): Evangeline, Alexandria, Alessandra, Jacqueline
  • 11 letters (over 300): Christianna, Ameliagrace, Anavictoria
  • 12 letters (under 100)
  • 13 letters (over 100)
  • 14 letters (under 100)
  • 15 letters (none)

Top length for boy names: 6 letters

For baby boys, the most-used length was also 6 letters, followed by 5 and 4.

Graph of length popularity for U.S. baby boy names, 2021

The most popular girl names per length were…

  • 2 letters (over 1,800 baby boys): Bo, Ty, Om, Aj, Cy, Oz
  • 3 letters (over 49,200): Leo, Eli, Kai, Ian, Ace, Max
  • 4 letters (over 288,800): Liam, Noah, Jack, Levi, Owen, John
  • 5 letters (over 453,200): James, Lucas, Henry, Mateo, Mason, Ethan
  • 6 letters (over 511,800): Oliver, Elijah, Daniel, Samuel, Joseph, Julian
  • 7 letters (over 269,000): William, Jackson, Michael, Grayson, Matthew, Gabriel
  • 8 letters (over 106,100): Benjamin, Theodore, Maverick, Santiago, Jonathan, Jeremiah
  • 9 letters (over 42,000): Alexander, Sebastian, Christian, Nathaniel, Alejandro
  • 10 letters (over 3,700): Maximilian, Alessandro, Kristopher, Montgomery
  • 11 letters (over 7,800): Christopher, Maximiliano, Constantine
  • 12 letters (over 200)
  • 13 letters (over 100)
  • 14 letters (under 100)
  • 15 letters (under 100)

Top first letters of baby names in the United States, 2021

Which first letters were the most and least popular for U.S. baby names in 2021?

Top first letters for girl names: A, E, M

For baby girls, the most-used first letter was A, followed by E and M. The least-used first letter was U.

Graph of first letter popularity for U.S. baby girl names, 2021

The most popular girl names per letter were…

  • A-names (over 273,100 baby girls): Amelia, Ava, Abigail, Avery, Aria, Aurora
  • B-names (over 49,300): Brooklyn, Bella, Brielle, Blakely, Bailey, Brianna
  • C-names (over 93,100): Charlotte, Camila, Chloe, Claire, Caroline, Cora
  • D-names (over 40,300): Delilah, Daisy, Diana, Daniela, Delaney, Dakota
  • E-names (over 155,300): Emma, Evelyn, Elizabeth, Eleanor, Ella, Emily
  • F-names (over 16,500): Freya, Faith, Finley, Fiona, Fatima, Frances
  • G-names (over 42,900): Gianna, Grace, Genesis, Gabriella, Genevieve, Georgia
  • H-names (over 54,900): Harper, Hazel, Hannah, Hailey, Hadley, Harmony
  • I-names (over 44,100): Isabella, Isla, Ivy, Iris, Isabelle, Isabel
  • J-names (over 73,500): Josephine, Jade, Julia, Josie, Juniper, Jasmine
  • K-names (over 89,100): Kinsley, Kennedy, Kaylee, Kehlani, Katherine, Kylie
  • L-names (over 115,300): Luna, Layla, Lily, Leah, Lucy, Lillian
  • M-names (over 143,500): Mia, Mila, Madison, Maya, Madelyn, Madeline
  • N-names (over 58,800): Nora, Nova, Naomi, Natalie, Natalia, Nevaeh
  • O-names (over 30,200): Olivia, Olive, Oakley, Oaklynn, Octavia, Ophelia
  • P-names (over 37,600): Penelope, Paisley, Piper, Peyton, Parker, Presley
  • Q-names (over 4,100): Quinn, Quincy, Queen, Quinley, Quetzalli, Quinnley
  • R-names (over 74,800): Riley, Ruby, Rylee, Raelynn, Rose, Remi
  • S-names (over 116,400): Sophia, Sofia, Scarlett, Stella, Savannah, Skylar
  • T-names (over 24,200): Taylor, Teagan, Trinity, Tatum, Tessa, Talia
  • U-names (over 600): Unique, Uma, Ulani, Una, Unknown, Unity
  • V-names (over 32,400): Violet, Victoria, Valentina, Vivian, Valerie, Valeria
  • W-names (over 14,700): Willow, Wren, Winter, Wynter, Willa, Wrenley
  • X-names (over 4,500): Ximena, Xiomara, Xyla, Xena, Xochitl, Xitlali
  • Y-names (over 7,600): Yaretzi, Yara, Yareli, Yasmin, Yamileth, Yuna
  • Z-names (over 29,100): Zoey, Zoe, Zuri, Zara, Zariah, Zelda

Top first letters for boy names: J, A, L

For baby boys, the most-used first letter was J, followed by A and L. The least-used first letter was U.

Graph of first letter popularity for U.S. baby boy names, 2021

The most popular boy names per letter were…

  • A-names (over 178,600 baby boys): Alexander, Asher, Aiden, Anthony, Andrew, Adrian
  • B-names (over 86,600): Benjamin, Brooks, Bennett, Beau, Bryson, Brayden
  • C-names (over 123,000): Carter, Charles, Caleb, Christopher, Cameron, Cooper
  • D-names (over 85,000): Daniel, David, Dylan, Dominic, Declan, Damian
  • E-names (over 108,700): Elijah, Ethan, Ezra, Elias, Ezekiel, Eli
  • F-names (over 20,500): Finn, Felix, Finley, Francisco, Fernando, Finnegan
  • G-names (over 53,500): Grayson, Gabriel, Greyson, Gael, Giovanni, George
  • H-names (over 50,000): Henry, Hudson, Hunter, Harrison, Hayden, Hayes
  • I-names (over 31,500): Isaac, Isaiah, Ian, Ivan, Israel, Ismael
  • J-names (over 202,800): James, Jack, Jackson, Jacob, John, Joseph
  • K-names (over 93,400): Kai, Kayden, Kingston, Kaiden, Kevin, King
  • L-names (over 133,400): Liam, Lucas, Levi, Logan, Leo, Luke
  • M-names (over 126,700): Mateo, Michael, Mason, Matthew, Maverick, Miles
  • N-names (over 57,400): Noah, Nathan, Nolan, Nicholas, Nathaniel, Nicolas
  • O-names (over 38,800): Oliver, Owen, Oscar, Omar, Orion, Odin
  • P-names (over 23,700): Parker, Patrick, Peter, Preston, Phoenix, Paxton
  • Q-names (over 3,100): Quinn, Quentin, Quincy, Quinton, Quintin, Quinten
  • R-names (over 82,800): Ryan, Roman, Robert, Rowan, River, Ryder
  • S-names (over 70,300): Sebastian, Samuel, Santiago, Silas, Sawyer, Steven
  • T-names (over 59,200): Theodore, Thomas, Thiago, Theo, Tyler, Tucker
  • U-names (over 2,500): Uriel, Uriah, Ulises, Ulysses, Uziel, Umar
  • V-names (over 11,000): Vincent, Victor, Valentino, Vincenzo, Vicente, Vihaan
  • W-names (over 49,100): William, Wyatt, Waylon, Wesley, Weston, Walker
  • X-names (over 7,200): Xavier, Xander, Xzavier, Xavion, Xavien, Xavian
  • Y-names (over 8,200): Yusuf, Yosef, Yehuda, Yousef, Yahir, Yisroel
  • Z-names (over 26,900): Zion, Zachary, Zayden, Zane, Zayn, Zander

Falling boy names in the United States, 2021

Which boy names decreased in usage the most from 2020 to 2021?

Here’s a table of the fastest-falling boy names of 2021. On the left are the top 25 decreases in terms of absolute numbers of babies, and on the right are the top 25 decreases in terms of relative numbers of babies.

RankBoy nameAbsolute fallBoy nameRelative fall
1Mason-1,035Aldair-70%
2Alexander-880Vinson-64%
3Jacob-860Rishik-64%
4Michael-742Sylar-62%
5Ethan-717Kassian-62%
6Matthew-685Babyboy-62%
7Connor-650Adrain-61%
8Ryan-613Kiari-61%
9Hunter-595Princeston-60%
10William-525Graycen-58%
11Joshua-509Teagen-58%
12Emmanuel-491Mister-58%
13Jaxson-489Josyah-58%
14Christian-487Jaysean-57%
15Colton-477Janoah-57%
16Andrew-466Waseem-57%
17Brayden-452Shloime-57%
18Jaxon-440Siddhant-56%
19Karter-434Abdurahman-56%
20Carson-430Jabriel-56%
21Elijah-428Aran-56%
22Benjamin-418Januel-55%
23Daniel-411Dian-55%
24Kobe-399Trysten-55%
25Carter-389Greysin-55%

Kobe was 2020’s largest absolute increase by a good margin. (The second name on that list, Theodore, broke into the top 10 in 2021.)

Here are the boy names that saw the steepest dives out of the data (i.e., to below 5 instances of usage) in 2021:

  • given to 26 babies in 2020: Burhanuddin
  • given to 20 babies in 2020: Bader
  • given to 18 babies in 2020: Hyatt, Reylan
  • given to 17 babies in 2020: Abdelrahman
  • given to 16 babies in 2020: Kymeir

Do you have thoughts/insights about any of the above names?

Rising boy names in the United States, 2021

Which boy names increased in usage the most from 2020 to 2021?

Here’s a table of the fastest-rising boy names of 2021. On the left are the top 25 increases in terms of absolute numbers of babies, and on the right are the top 25 increases in terms of relative numbers of babies.

RankBoy nameAbsolute riseBoy nameRelative rise
1Luca2,031Calian914%
2Waylon1,049Treu440%
3Walker989Aliyar320%
4Theodore916Nain320%
5Luka863Zealand282%
6Kai755Lorik280%
7Hudson750Nahel280%
8Ezekiel741Nuchem280%
9August710Arlis267%
10River652Kiko267%
11Asher613Dayvon264%
12Jack588Shloma257%
13Brooks564Erling240%
14Ezra562Rev240%
15Leo547Skylen240%
16Henry542Worth240%
17Ace522Kove237%
18Wesley501Kj233%
19Enzo501Alvey229%
20Liam495Ioane222%
21Atlas474Alban220%
22Theo467Jontae220%
23Beau460Onyxx220%
24Maverick434Slayter220%
25Levi411Vyan220%

Luca (and Luka) may have been given a boost by the 2021 Pixar film Luca. And it looks like Calian is a character on a TV series called Don’t Look Deeper.

If you can explain any of the other rises, please leave a comment!