Colby

#2,822 for girls in 2025, 60 births · #615 for boys in 2025, 455 births
Given to boys 92.8% of the time

Showing
Show data for
Peak · boys
2001 · 3,859 births
Debut · boys
5 births
In top 100 · boys
1 yr
of 146 years
Total births · boys
53,971
since 1888

Colby over time

girlsboys

Rank within each sex, plotted together. Click any year to open it.

#1#10#100#1,000#10,000rank188019001920194019601980200020202019peak #1,030, 1985peak #99, 2001girlsboys
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#2,82260#615455
2024#3,22549#583490
2023#3,38647#607467
2022#2,68964#600469
2021#2,95856#651420
2020#3,39945#618439
2019#3,27248#612447
2018#3,61442#597459
2017#3,34647#584465
2016#3,99637#529558
2015#3,47845#456665
2014#3,13752#427717
2013#4,33633#400746
2012#3,36448#341909
2011#2,98957#3141,026
2010#2,69166#2801,207
2009#2,56872#2851,152
2008#2,63070#2731,256
2007#2,68468#2831,221
2006#3,56444#2721,272
2005#2,96954#2201,603
2004#2,39671#1852,066
2003#2,08485#1812,170
2002#1,564119#1253,118
2001#1,540120#993,859
2000#1,262155#2341,465
1999#1,309138#2241,507
1998#1,77488#2201,456
1997#1,71890#2291,357
1996#1,551102#2251,344
1995#1,474108#2091,411
1994#1,229142#2001,449
1993#1,271134#2001,519
1992#1,138155#1971,574
1991#1,328124#2021,515
1990#1,265129#2451,129
1989#1,414105#2501,032
1988#1,384102#255922
1987#1,098138#257870
1986#1,142125#253891
1985#1,030146#286715
1984#1,080129#276759
1983#1,42382#300656
1982#2,90131#360494
1981#4,34417#539242
1980#2,86631#531262
1979#2,93129#478298
1978#3,09825#479289
1977#2,21641#467298
1976#2,09941#432320
1975#2,06042#413350
1974#2,06640#435330
1973#2,68926#445309
1972#3,06221#551209
1971#3,37319#559209
1970#3,31119#695142
1969#4,19812#84183
1968#4,48910#84474
1967#1,15042
1966#1,21638
1965#5,8176#1,36032
1964#6,0096#1,46229
1963#5,8916#1,35433
1962#5,8606#1,54626
1961#1,23341
1960#1,40032
1959#6,2455#1,46729
1958#6,1035#1,67722
1957#6,0865#1,41131
1956#5,9525#1,48028
1955#3,09514#1,53825
1954#5,1486#1,76219
1953#3,9559#1,90017
1952#3,7969#1,48526
1951#2,05514
1950#4,3157#2,01914
1949#1,50124
1948#1,46025
1947#1,85017
1946#2,6908
1945#1,77215
1944#1,73816
1943#2,40510
1942#2,5239
1941#2,8727
1940#3,1306
1939#2,4499
1938#2,32610
1937#2,9057
1936#2,8547
1935#2,39610
1934#3,2776
1933#3,2686
1932#3,7765
1931#3,7635
1930#3,0228
1929#3,9595
1928#2,8439
1927#2,70310
1926#3,1398
1925#3,1558
1924#3,0239
1923#3,4677
1922#3,2528
1921#2,37613
1920#2,33613
1919#3,1158
1918#3,3687
1917#2,7329
1916#2,9268
1915
1914
1913
1912
1911
1910
1909
1908
1907
1906
1905
1904
1903
1902
1901
1900
1899
1898
1897
1896
1895
1894
1893
1892
1891
1890
1889
1888#1,0315
1887
1886
1885
1884
1883
1882
1881
1880
First appearance
1888

The first year at least five boys were named Colby! It came in at #1,031, and was given to 5 baby boys.


Quietest stretch: 1888–1915, when fewer than 6 boys a year got the name.

See more about Colby
Momentum · boys
Holding steady
  • 32 spots since 2024 (#583#615)
  • 3 spots since 2020 (#618#615)
  • 159 spots since 2015 (#456#615)
  • Biggest jump: 306 spots in 1968 (#1,150#844)
  • Biggest drop: 73 spots in 2016 (#456#529)
Rise & fade · boys
113 yrs to peak
  • Debuted 1888
  • Peaked 2001 at #99 (3,859 births)
  • Births halved by 2005, 4 yrs later
Top of the charts · boys
Top 100 for 1 yr
  • Top 10: never
  • Top 100: 1 yr · 2001
  • Top 1,000: 58 yrs · run 1968–2025
Share of babies · boys
1 in 503
  • Highest: 1 in 503 boys born in 2001 were named Colby (0.20%)
  • Latest: 1 in 3,754 boys born in 2025 (0.03%)
Era · boys
The 2000s
  • 35.5% of all boys named Colby (19,182) were born in this decade
Girls or boys?
Never flipped
  • The majority has never changed
all girlsall boys
Show by decade
DecadeBirthsBest rankAvg rank
1880s5#1,031 (1888)#1,031
1890s0
1900s0
1910s32#2,732 (1917)#3,035
1920s90#2,336 (1920)#3,025
1930s73#2,326 (1938)#3,004
1940s137#1,460 (1948)#2,194
1950s225#1,411 (1957)#1,679
1960s430#841 (1969)#1,241
1970s2,754#413 (1975)#495
1980s6,843#250 (1989)#331
1990s14,261#197 (1992)#215
2000s19,182#99 (2001)#216
2010s7,199#280 (2010)#454
2020s2,740#583 (2024)#612

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.

Colby in 2019

girls
#3,272
48 births · 1 in 34,966 girls
boys
#612
447 births · 1 in 4,014 boys

Top girls' names in 2019

  1. #1Olivia18,577
  2. #2Emma17,226
  3. #3Ava14,549
  4. #4Sophia13,821
  5. #5Isabella13,407
  6. #6Charlotte13,239
  7. #7Amelia12,944
  8. #8Mia12,508
  9. #9Harper10,497
  10. #10Evelyn10,443
  11. #3,272Colby48

Top boys' names in 2019

  1. #1Liam20,631
  2. #2Noah19,178
  3. #3Oliver13,967
  4. #4William13,658
  5. #5Elijah13,436
  6. #6James13,198
  7. #7Benjamin13,044
  8. #8Lucas12,483
  9. #9Mason11,484
  10. #10Alexander11,327
  11. #612Colby447
More about 2019

girls

1,678,366 girls got a published name in 2019; 1 in 34,966 of them was named Colby, which outranked 81.8% of the 18,024 girls' names that year. The ten most popular names covered 8.2% of girls (24.6% in 1880, 7.0% in 2025).

Ranked beside Colby
  1. #3,222Yameli49
  2. #3,222Zaylah49
  3. #3,222Zeynep49
  4. #3,272Colby48
  5. #3,272Aanvi48
  6. #3,272Abygail48
  7. #3,272Alona48
  8. #3,337Aiko47
  9. #3,337Alycia47
  10. #3,337Amairany47

Tied with 64 names at #3,272; 3 shown. Tied names share a rank, as in SSA's lists.

Biggest movers since 2018
Risers
  1. 1,081Amoura#2,059#978
  2. 553Theodora#1,406#853
  3. 456Navy#1,269#813
  4. 415Emani#1,371#956
  5. 403Yaritza#1,216#813
Fallers
  1. 451Emmarie#990#1,441
  2. 368Saniyah#934#1,302
  3. 252Tatiana#692#944
  4. 229Zhavia#879#1,108
  5. 219Jayden#979#1,198

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

boys

1,794,216 boys got a published name in 2019; 1 in 4,014 of them was named Colby, which outranked 95.7% of the 14,133 boys' names that year. The ten most popular names covered 7.9% of boys (44.2% in 1880, 8.0% in 2025).

Ranked beside Colby
  1. #608Ty449
  2. #608Uriah449
  3. #611Trey448
  4. #612Colby447
  5. #613Braylon446
  6. #614Aden443
  7. #614Leandro443
Biggest movers since 2018
Risers
  1. 5,830Sekani#6,703#873
  2. 5,230Ermias#5,770#540
  3. 654Amias#1,478#824
  4. 623Kyro#1,343#720
  5. 512Aziel#1,465#953
Fallers
  1. 376Jaxtyn#776#1,152
  2. 252Brysen#860#1,112
  3. 220Coen#814#1,034
  4. 219Chad#899#1,118
  5. 219Imran#933#1,152

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

See the top 100 for 2019