Meaning not yet researched.
Guillermo: US boys given the name each year, 1880 to 2025, from Social Security card applications. 264 in 2025. Its best rank was #352 in 1996.
US births per year · SSA card applications
Peaked at #352 in 1996; #902 in 2025. Every baby recorded as Guillermo in 2025 was a boy.
Baby name · US data 1880–2025
#902 for US boys in 2025. Its best year was 1996, at #352.
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.
Guillermo: US boys given the name each year from 1880 to 2025. 264 boys in 2025. Peak: #352 in 1996 · most boys in one year: 693 (1998).
In 2025, 264 US boys were named Guillermo, making it the 902nd most common boys’ name of the year, down 71 places from #831 in 2024. That is 35 fewer than the 299 boys named Guillermo in 2024. Its best rank for boys was #352, reached in 1996. The most boys given the name in a single year was 693, in 1998. For comparison, it was #661 in 2015 and #608 in 1950.
Social Security card records list Guillermo in 125 years of the 146 from 1880 to 2025, starting in 1885 with 5 babies. In all, 32,148 US babies have been given the name, 0.2% of them girls and 99.7% boys. Its busiest decade was the 1990s, with 6,496 babies named Guillermo.
Over the 10 years from 2016 to 2025, 2,963 US boys were named Guillermo; the busiest of those years was 2016, with 322. In 2025 that was about 1 in 6,470 of the boys in SSA’s list for the year.
Among the states, Guillermo ranked highest in Arizona in 2025, at #436 for boys there. It was not in the top 100 of any state. Related spellings in the SSA files include William (4,215,725 babies since 1880), Bill (161,190 babies since 1880), Will (46,610 babies since 1880) and Willem (2,840 babies since 1880). Rarer spellings such as Gullermo 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: Gullermo (5).
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 Guillermo 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 39 are not listed.
| State | Births 2025 | Rank 2025 | Rank 2015 |
|---|---|---|---|
| Arizona | 17 | #436 | #445 |
| California | 60 | #511 | #340 |
| Texas | 64 | #521 | #352 |
| Nevada | 5 | #539 | — |
| Washington | 10 | #657 | #795 |
| Minnesota | 6 | #742 | — |
| Colorado | 6 | #797 | #568 |
| Illinois | 9 | #892 | #655 |
| Florida | 11 | #1,147 | #570 |
| North Carolina | 6 | #1,190 | — |
| New York | 8 | #1,344 | #913 |
| Georgia | 5 | #1,415 | #943 |
Births and national rank for each year SSA lists the name, newest first.
| Year | Girls | Girls rank | Boys | Boys rank |
|---|---|---|---|---|
| 2025 | — | — | 264 | #902 |
| 2024 | — | — | 299 | #831 |
| 2023 | — | — | 294 | #833 |
| 2022 | — | — | 287 | #850 |
| 2021 | — | — | 299 | #812 |
| 2020 | — | — | 275 | #832 |
| 2019 | — | — | 320 | #747 |
| 2018 | — | — | 314 | #752 |
| 2017 | — | — | 289 | #795 |
| 2016 | — | — | 322 | #755 |
| 2015 | — | — | 389 | #661 |
| 2014 | — | — | 376 | #676 |
| 2013 | — | — | 348 | #690 |
| 2012 | — | — | 392 | #619 |
| 2011 | — | — | 408 | #604 |
| 2010 | — | — | 457 | #553 |
| 2009 | — | — | 534 | #507 |
| 2008 | — | — | 583 | #476 |
| 2007 | — | — | 610 | #454 |
| 2006 | 5 | #18,117 | 621 | #439 |
| 2005 | — | — | 616 | #434 |
| 2004 | — | — | 639 | #406 |
| 2003 | — | — | 595 | #428 |
| 2002 | — | — | 626 | #405 |
| 2001 | — | — | 620 | #402 |
| 2000 | — | — | 651 | #392 |
| 1999 | — | — | 665 | #387 |
| 1998 | — | — | 693 | #369 |
| 1997 | — | — | 632 | #382 |
| 1996 | — | — | 692 | #352 |
| 1995 | 6 | #12,302 | 623 | #380 |
| 1994 | 6 | #12,319 | 675 | #357 |
| 1993 | 7 | #10,983 | 654 | #360 |
| 1992 | 7 | #10,871 | 659 | #361 |
| 1991 | 8 | #9,638 | 582 | #389 |
| 1990 | — | — | 587 | #395 |
| 1989 | — | — | 532 | #404 |
| 1988 | 5 | #12,460 | 511 | #386 |
| 1987 | — | — | 388 | #451 |
| 1986 | — | — | 405 | #430 |
| 1985 | 5 | #11,243 | 432 | #409 |
| 1984 | — | — | 412 | #404 |
| 1983 | — | — | 423 | #394 |
| 1982 | 5 | #11,064 | 437 | #386 |
| 1981 | 5 | #10,952 | 428 | #392 |
| 1980 | 5 | #10,921 | 395 | #409 |
| 1979 | — | — | 394 | #400 |
| 1978 | — | — | 322 | #442 |
| 1977 | — | — | 351 | #422 |
| 1976 | — | — | 360 | #411 |
| 1975 | 5 | #9,558 | 349 | #416 |
| 1974 | — | — | 349 | #418 |
| 1973 | — | — | 347 | #419 |
| 1972 | — | — | 281 | #469 |
| 1971 | — | — | 314 | #461 |
| 1970 | — | — | 290 | #472 |
| 1969 | — | — | 244 | #494 |
| 1968 | — | — | 292 | #450 |
| 1967 | — | — | 242 | #484 |
| 1966 | 5 | #6,918 | 194 | #550 |
| 1965 | — | — | 203 | #539 |
| 1964 | — | — | 192 | #571 |
| 1963 | — | — | 193 | #567 |
| 1962 | — | — | 185 | #576 |
| 1961 | — | — | 171 | #607 |
| 1960 | — | — | 191 | #565 |
| 1959 | — | — | 184 | #580 |
| 1958 | — | — | 162 | #603 |
| 1957 | — | — | 158 | #612 |
| 1956 | — | — | 172 | #581 |
| 1955 | — | — | 150 | #604 |
| 1954 | — | — | 149 | #608 |
| 1953 | — | — | 126 | #638 |
| 1952 | — | — | 134 | #610 |
| 1951 | — | — | 133 | #611 |
| 1950 | — | — | 127 | #608 |
| 1949 | — | — | 137 | #577 |
| 1948 | — | — | 136 | #574 |
| 1947 | — | — | 114 | #646 |
| 1946 | — | — | 93 | #671 |
| 1945 | — | — | 94 | #626 |
| 1944 | — | — | 77 | #708 |
| 1943 | — | — | 79 | #726 |
| 1942 | — | — | 53 | #914 |
| 1941 | — | — | 89 | #646 |
| 1940 | — | — | 71 | #726 |
| 1939 | — | — | 63 | #765 |
| 1938 | — | — | 70 | #731 |
| 1937 | — | — | 67 | #746 |
| 1936 | — | — | 79 | #663 |
| 1935 | — | — | 72 | #720 |
| 1934 | — | — | 86 | #651 |
| 1933 | — | — | 74 | #699 |
| 1932 | — | — | 71 | #742 |
| 1931 | — | — | 100 | #586 |
| 1930 | — | — | 101 | #611 |
| 1929 | — | — | 94 | #630 |
| 1928 | — | — | 87 | #677 |
| 1927 | — | — | 100 | #632 |
| 1926 | — | — | 107 | #606 |
| 1925 | — | — | 88 | #688 |
| 1924 | — | — | 87 | #708 |
| 1923 | — | — | 89 | #684 |
| 1922 | — | — | 57 | #924 |
| 1921 | — | — | 44 | #1,060 |
| 1920 | — | — | 68 | #813 |
| 1919 | — | — | 43 | #1,041 |
| 1918 | — | — | 34 | #1,202 |
| 1917 | — | — | 40 | #1,049 |
| 1916 | — | — | 20 | #1,614 |
| 1915 | — | — | 33 | #1,132 |
| 1914 | — | — | 26 | #1,143 |
| 1913 | — | — | 16 | #1,337 |
| 1912 | — | — | 18 | #1,115 |
| 1911 | — | — | 10 | #1,147 |
| 1910 | — | — | 13 | #895 |
| 1909 | — | — | 5 | #1,554 |
| 1908 | — | — | 7 | #1,149 |
| 1907 | — | — | 6 | #1,257 |
| 1905 | — | — | 10 | #812 |
| 1904 | — | — | 10 | #780 |
| 1900 | — | — | 6 | #1,225 |
| 1897 | — | — | 5 | #1,132 |
| 1892 | — | — | 8 | #825 |
| 1885 | — | — | 5 | #1,002 |
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).