Rex

Last seen for girls in 1984 at #9,144 · #859 for boys in 2025, 281 births
Given to boys 99.8% of the time

Showing
Show data for
Peak · boys
1951 · 1,503 births
Debut · boys
13 births
In top 100 · boys
never
of 146 years
Total births · boys
60,449
since 1880

Rex over time

boys

Rank among boys' names. Rex has never cracked the top 100 here.

#1#10#100#1,000rank188019001920194019601980200020201945peak #170, 1951boys
Hover or use arrow keys to read values by year; click or press Enter to open that year.

Gaps mean fewer than 5 babies received the name that year, so the SSA doesn't publish it.

Show data table
Yeargirlsboys
rankbirthsrankbirths
2025#859281
2024#785320
2023#721368
2022#696380
2021#698380
2020#681377
2019#651410
2018#631421
2017#607434
2016#631423
2015#679374
2014#661389
2013#630391
2012#631385
2011#618386
2010#703332
2009#755303
2008#799274
2007#874236
2006#809252
2005#808237
2004#930182
2003#913182
2002#1,008154
2001#1,178116
2000#1,208112
1999#1,017137
1998#931151
1997#904152
1996#935139
1995#862157
1994#822167
1993#794178
1992#716207
1991#683220
1990#662232
1989#668224
1988#595247
1987#599231
1986#585232
1985#544261
1984#9,1446#536258
1983#532246
1982#524265
1981#515268
1980#10,3925#488300
1979#8,0617#525260
1978#512255
1977#473291
1976#467283
1975#469296
1974#465297
1973#433324
1972#407373
1971#369473
1970#362507
1969#361478
1968#339515
1967#306581
1966#275718
1965#264787
1964#5,4747#247957
1963#244983
1962#2271,133
1961#4,23910#2191,269
1960#5,6966#2141,314
1959#6,2455#2161,283
1958#4,5208#2131,243
1957#4,9187#2031,326
1956#5,3256#1931,452
1955#1911,400
1954#5,7535#1891,380
1953#5,0406#1881,345
1952#4,4837#1741,498
1951#1701,503
1950#1961,069
1949#207959
1948#210904
1947#220846
1946#236662
1945#269486
1944#234574
1943#234614
1942#4,1246#256521
1941#231558
1940#4,3495#227547
1939#216564
1938#202628
1937#203601
1936#201612
1935#3,7426#197647
1934#197631
1933#194626
1932#3,9016#213580
1931#227520
1930#234540
1929#252492
1928#4,1956#242519
1927#3,5618#250518
1926#239552
1925#3,3629#238553
1924#5,0615#229589
1923#225584
1922#214615
1921#5,0995#226591
1920#209614
1919#231523
1918#235509
1917#229471
1916#230461
1915#242401
1914#233334
1913#240243
1912#278164
1911#29182
1910#30465
1909#26868
1908#26564
1907#30748
1906#25361
1905#29546
1904#35133
1903#29043
1902#27746
1901#33429
1900#26759
1899#33129
1898#29839
1897#33131
1896#31535
1895#31034
1894#32230
1893#35925
1892#35728
1891#34924
1890#31630
1889#36923
1888#34928
1887#31128
1886#33226
1885#43917
1884#52013
1883#46015
1882#51413
1881#7067
1880#50513
First appearance
1880

In the first year the SSA published name data, Rex was already there! It came in at #505, and was given to 13 baby boys.


Quietest stretch: 1881, when fewer than 8 boys a year got the name.

See more about Rex
Momentum · boys
Falling
  • 74 spots since 2024 (#785#859)
  • 178 spots since 2020 (#681#859)
  • 180 spots since 2015 (#679#859)
  • Biggest jump: 192 spots in 1882 (#706#514)
  • Biggest drop: 201 spots in 1881 (#505#706)
Rise & fade · boys
71 yrs to peak
  • Debuted 1880
  • Peaked 1951 at #170 (1,503 births)
  • Births halved by 1966, 15 yrs later
Top of the charts · boys
Top 1,000 for 142 yrs
  • Top 10: never
  • Top 100: never
  • Top 1,000: 142 yrs · run 1880–1998
Share of babies · boys
1 in 1,253
  • Highest: 1 in 1,253 boys born in 1951 were named Rex (0.08%)
  • Latest: 1 in 6,079 boys born in 2025 (0.02%)
Era · boys
The 1950s
  • 22.3% of all boys named Rex (13,499) were born in this decade
Show by decade
DecadeBirthsBest rankAvg rank
1880s183#311 (1887)#451
1890s305#298 (1898)#329
1900s497#253 (1906)#291
1910s3,253#229 (1917)#251
1920s5,627#209 (1920)#232
1930s5,949#194 (1933)#208
1940s6,671#207 (1949)#232
1950s13,499#170 (1951)#193
1960s8,735#214 (1960)#270
1970s3,359#362 (1970)#448
1980s2,532#488 (1980)#559
1990s1,740#662 (1990)#833
2000s2,048#755 (2009)#928
2010s3,945#607 (2017)#644
2020s2,106#681 (2020)#740

All figures count published births only (names given to at least 5 boys in a year). Registrations before 1937 are incomplete, so early shares and totals run low.

Rex in 1945

boys
#269
486 births · 1 in 2,769 boys

Top boys' names in 1945

  1. #1James74,464
  2. #2Robert69,947
  3. #3John66,117
  4. #4William50,218
  5. #5Richard46,046
  6. #6David37,110
  7. #7Charles32,469
  8. #8Thomas31,874
  9. #9Michael29,902
  10. #10Ronald23,665
  11. #269Rex486
More about 1945

boys

1,345,855 boys got a published name in 1945; 1 in 2,769 of them was named Rex, which outranked 92.9% of the 3,783 boys' names that year. The ten most popular names covered 34.3% of boys (44.2% in 1880, 8.0% in 2025).

Ranked beside Rex
  1. #265Nick491
  2. #267Nathan488
  3. #268Raul487
  4. #269Rex486
  5. #270Aaron484
  6. #271Julius483
  7. #272Ken479
Biggest movers since 1944
Risers
  1. 527Delano#1,085#558
  2. 499Dane#1,235#736
  3. 385Eusebio#1,328#943
  4. 371Erick#1,235#864
  5. 311Gerardo#1,282#971
Fallers
  1. 479Joan#870#1,349
  2. 408Kit#841#1,249
  3. 392Llewellyn#935#1,327
  4. 361Valentine#888#1,249
  5. 321Hilario#906#1,227

Among names in the top 1,000 of either year.

See the top 100 for 1945