Meaning not yet researched.
Colby: US boys given the name each year, 1880 to 2025, from Social Security card applications. 455 in 2025. Its best rank was #99 in 2001.
US births per year · SSA card applications
Peaked at #99 in 2001; #615 in 2025. About 88% of babies named Colby in 2025 were boys.
Baby name · US data 1880–2025
#615 for US boys in 2025. Its best year was 2001, at #99.
Hover, tap or use the arrow keys for any year. Years with fewer than five babies of a sex are not published by SSA and show as zero.
Colby: US boys and girls given the name each year from 1880 to 2025. 455 boys in 2025. Peak: #99 in 2001 · most boys in one year: 3,859 (2001).
In 2025, 455 US boys were named Colby, making it the 615th most common boys’ name of the year, down 32 places from #583 in 2024. That is 35 fewer than the 490 boys named Colby in 2024. Its best rank for boys was #99, reached in 2001. That year also had the most boys given the name: 3,859. For comparison, it was #457 in 2015 and #2,041 in 1950.
In 2025, 60 US girls were named Colby, making it the 2,828th most common girls’ name of the year, up 412 places from #3,240 in 2024. That is 11 more than the 49 girls named Colby in 2024. Its best rank for girls was #1,032, reached in 1985. The most girls given the name in a single year was 155, in 2000. For comparison, it was #3,493 in 2015 and #4,390 in 1950.
Social Security card records list Colby in 111 years of the 146 from 1880 to 2025, starting in 1888 with 5 babies. In all, 58,155 US babies have been given the name, 7.2% of them girls and 93% boys. Its busiest decade was the 2000s, with 20,040 babies named Colby.
Over the 10 years from 2016 to 2025, 4,669 US boys were named Colby; the busiest of those years was 2016, with 558. In 2025 that was about 1 in 3,754 of the boys in SSA’s list for the year.
Among the states, Colby ranked highest in West Virginia in 2025, at #231 for boys there. It was not in the top 100 of any state. Related spellings in the SSA files include Kolby (13,001 babies since 1880) and Colbie (4,099 babies since 1880). Rarer spellings such as Kolbi, Colbi and Colbey are summarised on this page.
Meaning not yet researched.
We publish a meaning only with a cited source and a confidence label, and never generate one. Meanings are being researched for the most common names first.
Rare spellings summarised here: Kolbi (1,192), Colbi (669), Colbey (551), Kolbey (265), Colbee (48), Kohlby (28).
Numbers are all-time US births. Links come from Wikidata’s “said to be the same as” (P460, CC0) and our spelling rule: at most two letters different, with the same sound pattern.
No nicknames listed for Colby in the open dataset we use.
Source: carltonnorthern/nicknames (Apache-2.0).
US boys. Rank within each state. SSA leaves out states where fewer than five boys got the name, so 14 are not listed.
| State | Births 2025 | Rank 2025 | Rank 2015 |
|---|---|---|---|
| West Virginia | 8 | #231 | #232 |
| New Hampshire | 5 | #242 | #159 |
| Kansas | 11 | #332 | #269 |
| Nebraska | 6 | #389 | #297 |
| Connecticut | 7 | #393 | #303 |
| Wisconsin | 13 | #396 | #562 |
| Missouri | 16 | #398 | #361 |
| Pennsylvania | 26 | #402 | #361 |
| Iowa | 8 | #408 | #238 |
| Kentucky | 12 | #409 | #434 |
| Massachusetts | 12 | #416 | #240 |
| Mississippi | 7 | #426 | #292 |
| Virginia | 18 | #439 | #293 |
| Indiana | 15 | #456 | #633 |
| North Carolina | 22 | #476 | #408 |
| Oregon | 7 | #484 | #428 |
| South Carolina | 9 | #513 | #288 |
| Arkansas | 5 | #570 | #440 |
| Colorado | 9 | #577 | #312 |
| Alabama | 8 | #581 | #328 |
| Maryland | 8 | #583 | #395 |
| Minnesota | 8 | #597 | #475 |
| Georgia | 17 | #597 | #333 |
| Ohio | 16 | #602 | #795 |
| Tennessee | 10 | #680 | #373 |
| Louisiana | 6 | #682 | #258 |
| Michigan | 11 | #685 | #681 |
| Utah | 5 | #721 | #423 |
| Oklahoma | 5 | #722 | #392 |
| Washington | 8 | #746 | #384 |
| Arizona | 7 | #790 | #634 |
| Illinois | 10 | #816 | #714 |
| Florida | 18 | #817 | #579 |
| New Jersey | 7 | #844 | #789 |
| Texas | 29 | #881 | #601 |
| California | 26 | #885 | #709 |
| New York | 11 | #1,068 | #612 |
Births and national rank for each year SSA lists the name, newest first.
| Year | Girls | Girls rank | Boys | Boys rank |
|---|---|---|---|---|
| 2025 | 60 | #2,828 | 455 | #615 |
| 2024 | 49 | #3,240 | 490 | #583 |
| 2023 | 47 | #3,395 | 467 | #607 |
| 2022 | 64 | #2,703 | 469 | #601 |
| 2021 | 56 | #2,967 | 420 | #651 |
| 2020 | 45 | #3,407 | 439 | #618 |
| 2019 | 48 | #3,290 | 447 | #612 |
| 2018 | 42 | #3,628 | 459 | #597 |
| 2017 | 47 | #3,352 | 465 | #584 |
| 2016 | 37 | #4,013 | 558 | #529 |
| 2015 | 45 | #3,493 | 665 | #457 |
| 2014 | 52 | #3,145 | 717 | #427 |
| 2013 | 33 | #4,351 | 746 | #400 |
| 2012 | 48 | #3,379 | 909 | #341 |
| 2011 | 57 | #2,996 | 1,026 | #314 |
| 2010 | 66 | #2,702 | 1,207 | #280 |
| 2009 | 72 | #2,575 | 1,152 | #285 |
| 2008 | 70 | #2,638 | 1,256 | #273 |
| 2007 | 68 | #2,688 | 1,221 | #283 |
| 2006 | 44 | #3,573 | 1,272 | #272 |
| 2005 | 54 | #2,975 | 1,603 | #220 |
| 2004 | 71 | #2,402 | 2,066 | #185 |
| 2003 | 85 | #2,086 | 2,170 | #181 |
| 2002 | 119 | #1,565 | 3,118 | #125 |
| 2001 | 120 | #1,547 | 3,859 | #99 |
| 2000 | 155 | #1,262 | 1,465 | #234 |
| 1999 | 138 | #1,311 | 1,507 | #224 |
| 1998 | 88 | #1,776 | 1,456 | #220 |
| 1997 | 90 | #1,721 | 1,357 | #229 |
| 1996 | 102 | #1,552 | 1,344 | #225 |
| 1995 | 108 | #1,477 | 1,411 | #209 |
| 1994 | 142 | #1,230 | 1,449 | #200 |
| 1993 | 134 | #1,274 | 1,519 | #200 |
| 1992 | 155 | #1,139 | 1,574 | #197 |
| 1991 | 124 | #1,328 | 1,515 | #202 |
| 1990 | 129 | #1,266 | 1,129 | #245 |
| 1989 | 105 | #1,415 | 1,032 | #250 |
| 1988 | 102 | #1,385 | 922 | #255 |
| 1987 | 138 | #1,098 | 870 | #257 |
| 1986 | 125 | #1,143 | 891 | #253 |
| 1985 | 146 | #1,032 | 715 | #286 |
| 1984 | 129 | #1,083 | 759 | #276 |
| 1983 | 82 | #1,428 | 656 | #300 |
| 1982 | 31 | #2,909 | 494 | #360 |
| 1981 | 17 | #4,379 | 242 | #539 |
| 1980 | 31 | #2,880 | 262 | #532 |
| 1979 | 29 | #2,941 | 298 | #478 |
| 1978 | 25 | #3,118 | 289 | #479 |
| 1977 | 41 | #2,223 | 298 | #467 |
| 1976 | 41 | #2,103 | 320 | #432 |
| 1975 | 42 | #2,065 | 350 | #413 |
| 1974 | 40 | #2,074 | 330 | #436 |
| 1973 | 26 | #2,697 | 309 | #445 |
| 1972 | 21 | #3,076 | 209 | #551 |
| 1971 | 19 | #3,389 | 209 | #560 |
| 1970 | 19 | #3,327 | 142 | #696 |
| 1969 | 12 | #4,227 | 83 | #843 |
| 1968 | 10 | #4,542 | 74 | #845 |
| 1967 | — | — | 42 | #1,152 |
| 1966 | — | — | 38 | #1,219 |
| 1965 | 6 | #5,931 | 32 | #1,362 |
| 1964 | 6 | #6,131 | 29 | #1,465 |
| 1963 | 6 | #6,006 | 33 | #1,356 |
| 1962 | 6 | #5,975 | 26 | #1,550 |
| 1961 | — | — | 41 | #1,238 |
| 1960 | — | — | 32 | #1,408 |
| 1959 | 5 | #6,423 | 29 | #1,469 |
| 1958 | 5 | #6,259 | 22 | #1,691 |
| 1957 | 5 | #6,237 | 31 | #1,413 |
| 1956 | 5 | #6,110 | 28 | #1,486 |
| 1955 | 14 | #3,117 | 25 | #1,546 |
| 1954 | 6 | #5,249 | 19 | #1,773 |
| 1953 | 9 | #3,997 | 17 | #1,910 |
| 1952 | 9 | #3,857 | 26 | #1,489 |
| 1951 | — | — | 14 | #2,068 |
| 1950 | 7 | #4,390 | 14 | #2,041 |
| 1949 | — | — | 24 | #1,515 |
| 1948 | — | — | 25 | #1,465 |
| 1947 | — | — | 17 | #1,863 |
| 1946 | — | — | 8 | #2,740 |
| 1945 | — | — | 15 | #1,791 |
| 1944 | — | — | 16 | #1,753 |
| 1943 | — | — | 10 | #2,435 |
| 1942 | — | — | 9 | #2,560 |
| 1941 | — | — | 7 | #2,921 |
| 1940 | — | — | 6 | #3,193 |
| 1939 | — | — | 9 | #2,486 |
| 1938 | — | — | 10 | #2,358 |
| 1937 | — | — | 7 | #2,959 |
| 1936 | — | — | 7 | #2,920 |
| 1935 | — | — | 10 | #2,418 |
| 1934 | — | — | 6 | #3,356 |
| 1933 | — | — | 6 | #3,338 |
| 1932 | — | — | 5 | #3,874 |
| 1931 | — | — | 5 | #3,872 |
| 1930 | — | — | 8 | #3,070 |
| 1929 | — | — | 5 | #4,069 |
| 1928 | — | — | 9 | #2,889 |
| 1927 | — | — | 10 | #2,734 |
| 1926 | — | — | 8 | #3,186 |
| 1925 | — | — | 8 | #3,197 |
| 1924 | — | — | 9 | #3,067 |
| 1923 | — | — | 7 | #3,528 |
| 1922 | — | — | 8 | #3,306 |
| 1921 | — | — | 13 | #2,405 |
| 1920 | — | — | 13 | #2,357 |
| 1919 | — | — | 8 | #3,166 |
| 1918 | — | — | 7 | #3,437 |
| 1917 | — | — | 9 | #2,777 |
| 1916 | — | — | 8 | #2,968 |
| 1888 | — | — | 5 | #1,067 |
About the data: counts are Social Security card applications for US births, for names given to at least five babies of a sex in a year (SSA, names.zip, public domain). Ranks follow SSA’s own order: most births first, ties alphabetical. Files retrieved 2026-10-05 (checksum on our sources page).