Leo
US babies given the name, 1880–2025, from SSA records
In 2025, 8,173 boys were named Leo: #19 among boys' names that year. The most boys in one year was 8,293, in 2022.
Babies named Leo each year
Both lines are drawn because the SSA files list Leo for girls and for boys; they share one scale, so the smaller line can sit close to the floor. A break in a line is a year under the SSA's 5-birth floor, not a drop to zero.
Boys 8,173Rank: boys #19, girls #5,492
Boys 2022: 8,293The single year with the most babies of that sex
Boys #18 in 2023Earliest year it reached that rank
Boys 146 of 146Years with 5 or more babies of that sex
Where it is most popular (2025)
Boys named Leo
Most boys by count: California (1,173), Texas (668) and New York (625). Listed in 49 of the 51 state files (50 states and DC); in the other 2 it is fewer than 5 or not listed.
Each tile shows boys named Leo per 1,000 boys in that state. Shading splits the listed states into five equal-sized groups by share, from the lowest (2.31) to the highest (14.9); a dashed tile is fewer than 5 or not listed.
| # | State | Per 1,000 boys | Babies |
|---|---|---|---|
| 1 | Vermont | 14.9 | 18 |
| 2 | District of Columbia | 10.7 | 27 |
| 3 | South Dakota | 10.4 | 40 |
| 4 | North Dakota | 9.24 | 31 |
| 5 | Delaware | 9.16 | 27 |
| 6 | Minnesota | 8.45 | 207 |
| 7 | Massachusetts | 8.25 | 223 |
| 8 | Hawaii | 8.22 | 24 |
| 9 | Maine | 8.06 | 31 |
| 10 | New Hampshire | 7.77 | 35 |
Girls named Leo
Most girls by count: Texas (5). Listed in 1 of the 51 state files (50 states and DC); in the other 50 it is fewer than 5 or not listed.
Each tile shows girls named Leo per 1,000 girls in that state. Shading splits the listed states into five equal-sized groups by share, from the lowest (0.03) to the highest (0.03); a dashed tile is fewer than 5 or not listed.
| # | State | Per 1,000 girls | Babies |
|---|---|---|---|
| 1 | Texas | 0.03 | 5 |
Share is the number of babies of one sex given the name per 1,000 babies of that sex counted in the same state’s 2025 file, so a small state with a strong taste for a name can outrank California; there a few babies move the share a lot, so read it with the count beside it. Source: the SSA state file namesbystate.zip (one file per state, 50 states and DC), Internet Archive capture 20260927185641, data year 2025. A state lists a name only when 5 or more babies of one sex got it there, so “fewer than 5 or not listed” may be 1 to 4 babies or none, each state’s counted total leaves those rarest names out, and the state counts can add up to less than the national count above.
Every year: babies and rank
| Year | Girls | Rank | Boys | Rank |
|---|---|---|---|---|
| 2025 | 23 | #5,492 | 8,173 | #19 |
| 2024 | 18 | #6,550 | 7,823 | #24 |
| 2023 | 28 | #4,818 | 8,160 | #18 |
| 2022 | 32 | #4,423 | 8,293 | #22 |
| 2021 | 32 | #4,373 | 7,803 | #31 |
| 2020 | 31 | #4,405 | 7,229 | #36 |
| 2019 | 22 | #5,723 | 7,504 | #40 |
| 2018 | 19 | #6,410 | 6,773 | #50 |
| 2017 | 17 | #6,979 | 5,965 | #62 |
| 2016 | 13 | #8,679 | 5,299 | #74 |
| 2015 | 11 | #9,872 | 4,603 | #91 |
| 2014 | 16 | #7,506 | 3,976 | #97 |
| 2013 | 9 | #11,553 | 3,511 | #112 |
| 2012 | 8 | #12,905 | 2,879 | #134 |
| 2011 | 6 | #15,943 | 2,250 | #167 |
| 2010 | under 5 or none | — | 1,946 | #191 |
| 2009 | 6 | #16,379 | 1,802 | #210 |
| 2008 | 6 | #16,612 | 1,628 | #228 |
| 2007 | under 5 or none | — | 1,531 | #238 |
| 2006 | under 5 or none | — | 1,501 | #235 |
| 2005 | 7 | #13,850 | 1,275 | #259 |
| 2004 | 5 | #17,669 | 1,239 | #265 |
| 2003 | 8 | #11,939 | 1,095 | #285 |
| 2002 | 6 | #14,658 | 809 | #339 |
| 2001 | under 5 or none | — | 736 | #360 |
| 2000 | under 5 or none | — | 658 | #388 |
| 1999 | under 5 or none | — | 524 | #441 |
| 1998 | under 5 or none | — | 527 | #434 |
| 1997 | under 5 or none | — | 458 | #471 |
| 1996 | under 5 or none | — | 447 | #482 |
| 1995 | 5 | #14,755 | 446 | #486 |
| 1994 | under 5 or none | — | 474 | #462 |
| 1993 | 6 | #12,742 | 456 | #465 |
| 1992 | under 5 or none | — | 469 | #463 |
| 1991 | under 5 or none | — | 506 | #441 |
| 1990 | under 5 or none | — | 431 | #477 |
| 1989 | 5 | #13,595 | 428 | #454 |
| 1988 | 6 | #11,155 | 451 | #426 |
| 1987 | 7 | #9,352 | 452 | #410 |
| 1986 | under 5 or none | — | 415 | #422 |
| 1985 | 5 | #11,660 | 447 | #405 |
| 1984 | under 5 or none | — | 430 | #396 |
| 1983 | 7 | #8,576 | 429 | #388 |
| 1982 | 6 | #9,895 | 483 | #366 |
| 1981 | 6 | #9,798 | 533 | #341 |
| 1980 | under 5 or none | — | 473 | #367 |
| 1979 | under 5 or none | — | 484 | #362 |
| 1978 | 7 | #8,130 | 478 | #353 |
| 1977 | 5 | #10,512 | 484 | #359 |
| 1976 | 7 | #7,748 | 481 | #348 |
| 1975 | 7 | #7,599 | 516 | #336 |
| 1974 | under 5 or none | — | 511 | #340 |
| 1973 | 8 | #6,396 | 509 | #335 |
| 1972 | 7 | #6,934 | 550 | #327 |
| 1971 | 7 | #7,009 | 651 | #302 |
| 1970 | 6 | #7,562 | 701 | #294 |
| 1969 | under 5 or none | — | 741 | #273 |
| 1968 | 5 | #7,636 | 695 | #279 |
| 1967 | 8 | #5,229 | 767 | #262 |
| 1966 | under 5 or none | — | 856 | #244 |
| 1965 | 6 | #6,188 | 902 | #247 |
| 1964 | 9 | #4,811 | 1,028 | #233 |
| 1963 | 6 | #6,252 | 1,016 | #237 |
| 1962 | 9 | #4,721 | 1,100 | #232 |
| 1961 | under 5 or none | — | 1,178 | #230 |
| 1960 | 9 | #4,624 | 1,204 | #230 |
| 1959 | 11 | #3,929 | 1,432 | #202 |
| 1958 | 9 | #4,360 | 1,428 | #196 |
| 1957 | 9 | #4,397 | 1,511 | #190 |
| 1956 | 8 | #4,667 | 1,550 | #184 |
| 1955 | 9 | #4,243 | 1,576 | #175 |
| 1954 | 6 | #5,477 | 1,613 | #172 |
| 1953 | 13 | #3,201 | 1,656 | #162 |
| 1952 | 6 | #5,236 | 1,558 | #171 |
| 1951 | 5 | #5,843 | 1,658 | #156 |
| 1950 | 6 | #5,032 | 1,554 | #160 |
| 1949 | 10 | #3,511 | 1,646 | #153 |
| 1948 | 5 | #5,654 | 1,718 | #151 |
| 1947 | 8 | #4,188 | 1,805 | #147 |
| 1946 | 13 | #2,813 | 1,647 | #147 |
| 1945 | 11 | #2,846 | 1,582 | #139 |
| 1944 | 10 | #3,054 | 1,592 | #132 |
| 1943 | 11 | #2,964 | 1,694 | #133 |
| 1942 | 15 | #2,360 | 1,800 | #120 |
| 1941 | 15 | #2,228 | 1,726 | #116 |
| 1940 | 15 | #2,160 | 1,752 | #112 |
| 1939 | 14 | #2,260 | 1,842 | #108 |
| 1938 | 14 | #2,285 | 1,952 | #104 |
| 1937 | 13 | #2,386 | 2,015 | #97 |
| 1936 | 16 | #1,986 | 2,017 | #94 |
| 1935 | 13 | #2,376 | 2,142 | #92 |
| 1934 | 19 | #1,809 | 2,309 | #86 |
| 1933 | 23 | #1,576 | 2,352 | #75 |
| 1932 | 22 | #1,659 | 2,500 | #74 |
| 1931 | 39 | #1,155 | 2,700 | #69 |
| 1930 | 46 | #1,094 | 3,035 | #63 |
| 1929 | 28 | #1,468 | 3,018 | #60 |
| 1928 | 44 | #1,153 | 3,095 | #61 |
| 1927 | 58 | #1,006 | 3,536 | #55 |
| 1926 | 52 | #1,041 | 3,552 | #54 |
| 1925 | 53 | #1,042 | 3,775 | #54 |
| 1924 | 48 | #1,133 | 3,990 | #51 |
| 1923 | 51 | #1,071 | 3,973 | #49 |
| 1922 | 50 | #1,086 | 3,901 | #51 |
| 1921 | 50 | #1,078 | 4,066 | #50 |
| 1920 | 62 | #926 | 4,054 | #48 |
| 1919 | 53 | #992 | 3,802 | #49 |
| 1918 | 62 | #912 | 4,036 | #48 |
| 1917 | 51 | #983 | 3,779 | #47 |
| 1916 | 59 | #883 | 3,621 | #47 |
| 1915 | 48 | #960 | 3,527 | #47 |
| 1914 | 35 | #1,012 | 2,655 | #47 |
| 1913 | 26 | #1,080 | 2,031 | #48 |
| 1912 | 17 | #1,330 | 1,654 | #49 |
| 1911 | 18 | #1,057 | 844 | #51 |
| 1910 | 25 | #868 | 707 | #51 |
| 1909 | 19 | #951 | 609 | #49 |
| 1908 | 22 | #842 | 584 | #49 |
| 1907 | 16 | #969 | 651 | #42 |
| 1906 | 11 | #1,197 | 508 | #47 |
| 1905 | 14 | #1,042 | 512 | #46 |
| 1904 | 19 | #843 | 552 | #42 |
| 1903 | 11 | #1,105 | 636 | #38 |
| 1902 | 14 | #955 | 551 | #43 |
| 1901 | 12 | #983 | 456 | #42 |
| 1900 | 17 | #930 | 570 | #46 |
| 1899 | 10 | #1,063 | 482 | #43 |
| 1898 | 20 | #763 | 588 | #39 |
| 1897 | 12 | #955 | 462 | #46 |
| 1896 | 22 | #675 | 497 | #47 |
| 1895 | 7 | #1,369 | 509 | #42 |
| 1894 | 10 | #1,031 | 515 | #42 |
| 1893 | 19 | #675 | 448 | #45 |
| 1892 | 14 | #817 | 444 | #49 |
| 1891 | 8 | #1,056 | 353 | #51 |
| 1890 | 12 | #807 | 393 | #49 |
| 1889 | 8 | #995 | 325 | #59 |
| 1888 | 10 | #871 | 353 | #59 |
| 1887 | 6 | #1,094 | 232 | #74 |
| 1886 | 8 | #864 | 240 | #73 |
| 1885 | 11 | #679 | 199 | #83 |
| 1884 | 6 | #980 | 192 | #84 |
| 1883 | under 5 or none | — | 142 | #95 |
| 1882 | under 5 or none | — | 146 | #99 |
| 1881 | 6 | #790 | 122 | #103 |
| 1880 | 6 | #799 | 147 | #93 |
Rank among all names of that sex in that year, by the SSA's rule. “under 5 or none” is a year the SSA file does not list: fewer than 5 babies of that sex, possibly none.
Rank in each decade
| Decade | Girls | Boys |
|---|---|---|
| 2020–2025 (so far) | #4,870 | #24 |
| 2010s | #9,001 | #91 |
| 2000s | #16,897 | #271 |
| 1990s | #22,027 | #467 |
| 1980s | #10,687 | #397 |
| 1970s | #7,903 | #342 |
| 1960s | #6,100 | #249 |
| 1950s | #4,244 | #178 |
| 1940s | #2,911 | #138 |
| 1930s | #1,662 | #88 |
| 1920s | #1,072 | #55 |
| 1910s | #971 | #47 |
| 1900s | #942 | #44 |
| 1890s | #862 | #43 |
| 1880s | #872 | #81 |
Rank among all names of that sex by births summed over the decade.
Years under the floor
Girls: under 5 or none in 1882–1883, 1961, 1966, 1969, 1974, 1979–1980, 1984, 1986, 1990–1992, 1994, 1996–2001, 2006–2007, 2010.
Boys: listed in every year, 1880–2025.
Compare Leo with another name — up to four names on one chart, with the year one passed another.
Look up another name
About this page
Why this name has its own page
These pages are the 19 girls' and 19 boys' names given to the most babies in 2025, the newest year in the SSA file this site is built from. The build picks them from that year's file each time it runs — most births first, ties in alphabetical order, the SSA's own ranking rule — so a new SSA year can change the list. All 38 are on the list of name pages; any other name is on the front page lookup.
Girls, 2025
- #1 Olivia 13,544
- #2 Charlotte 13,400
- #3 Emma 12,754
- #4 Amelia 12,699
- #5 Sophia 12,561
- #6 Mia 11,078
- #7 Isabella 10,666
- #8 Evelyn 9,123
- #9 Sofia 8,252
- #10 Eliana 8,191
- #11 Ava 7,732
- #12 Eleanor 7,649
- #13 Violet 7,546
- #14 Ailany 7,136
- #15 Aurora 7,065
- #16 Harper 6,792
- #17 Elizabeth 6,760
- #18 Lily 6,673
- #19 Camila 6,591
Boys, 2025
Where every number comes from
US Social Security Administration, "Beyond the Top 1000 Names" national data (names.zip): one text file per year of birth, 1880 to 2025, each line a name, a sex and a number of babies. The SSA address is www.ssa.gov/oact/babynames/names.zip; ssa.gov refuses requests from this site's build server, so the file was taken from the Internet Archive's copy of that address, captured 2026-09-28 (14:33 UTC) and fetched 2026-09-30: web.archive.org/web/20260928143357id_/www.ssa.gov/oact/babynames/names.zip. SHA-256 cd78e975ed7bb358e018dd62fbe14ced89295e9581c49172ca4eedcb011b3724.
The SSA lists a name for a sex in a year only when at least 5 babies got it, so every total here adds up the listed years only and is a floor on the true number. The file covers people with a Social Security number, so early decades count people who applied for one later in life. Spellings are separate names: this page counts “Leo” exactly as spelled.