Ysidro
Ysidro was given to 6 boys in 2025, #11,950 among boys’ names; 1,418 Americans have been recorded with it since 1906 (Social Security Administration, published May 2026).
Girls and boys together; gaps are years SSA did not record (fewer than 5 births).
Births of Ysidro by year: SSA national baby-name file, 1880-2025, published May 8, 2026. SSA’s notes on the data.
How popular is Ysidro?
#11,950 among boys’ names, 2025
Ysidro entered the boys’ rankings after 2015 and stood at #11,950 in 2025.
36 babies in 1922, the peak
Ysidro peaked in 1922, when 36 boys were given it, #1,219 among boys’ names. The 6 births of 2025 are 17% of that peak.
| Year | Births | Rank | Per million boys |
|---|---|---|---|
| 2025 | 6 | #11,950 | 3.5 |
| 2020 | 6 | #11,973 | 3.5 |
| 2019 | 5 | #14,064 | 2.8 |
| 2018 | 5 | #14,039 | 2.8 |
| 2017 | 7 | #10,734 | 3.8 |
| 2014 | 5 | #14,002 | 2.6 |
| 2012 | 10 | #8,126 | 5.3 |
| 2010 | 8 | #9,659 | 4.2 |
| 2009 | 6 | #12,447 | 3.0 |
| 2008 | 6 | #12,508 | 2.9 |
Every recorded year (106)
| Year | Births | Rank | Per million boys |
|---|---|---|---|
| 2007 | 6 | #12,323 | 2.9 |
| 2006 | 7 | #10,633 | 3.4 |
| 2005 | 7 | #10,117 | 3.5 |
| 2004 | 9 | #8,126 | 4.5 |
| 2003 | 6 | #10,861 | 3.0 |
| 2001 | 7 | #9,214 | 3.6 |
| 2000 | 11 | #6,301 | 5.6 |
| 1999 | 10 | #6,516 | 5.2 |
| 1998 | 12 | #5,452 | 6.3 |
| 1997 | 11 | #5,631 | 5.8 |
| 1996 | 6 | #8,988 | 3.2 |
| 1995 | 13 | #4,783 | 6.8 |
| 1994 | 12 | #5,099 | 6.2 |
| 1993 | 12 | #4,991 | 6.1 |
| 1992 | 16 | #3,909 | 8.0 |
| 1991 | 10 | #5,502 | 4.9 |
| 1990 | 12 | #4,661 | 5.8 |
| 1988 | 10 | #4,773 | 5.2 |
| 1987 | 12 | #3,950 | 6.4 |
| 1986 | 11 | #4,123 | 6.0 |
| 1985 | 8 | #5,136 | 4.3 |
| 1984 | 13 | #3,455 | 7.2 |
| 1983 | 9 | #4,494 | 5.0 |
| 1982 | 15 | #3,103 | 8.3 |
| 1981 | 10 | #4,147 | 5.6 |
| 1980 | 15 | #3,095 | 8.4 |
| 1979 | 12 | #3,564 | 7.0 |
| 1978 | 5 | #6,751 | 3.0 |
| 1977 | 16 | #2,787 | 9.7 |
| 1976 | 20 | #2,325 | 12.7 |
| 1975 | 17 | #2,535 | 10.9 |
| 1974 | 12 | #3,116 | 7.6 |
| 1973 | 12 | #3,009 | 7.7 |
| 1972 | 12 | #2,986 | 7.4 |
| 1971 | 14 | #2,681 | 7.9 |
| 1970 | 7 | #4,223 | 3.8 |
| 1969 | 12 | #2,680 | 6.7 |
| 1968 | 15 | #2,197 | 8.6 |
| 1967 | 18 | #1,904 | 10.3 |
| 1966 | 14 | #2,214 | 7.8 |
| 1965 | 15 | #2,175 | 8.1 |
| 1964 | 15 | #2,203 | 7.5 |
| 1963 | 16 | #2,111 | 7.9 |
| 1962 | 16 | #2,114 | 7.7 |
| 1961 | 15 | #2,240 | 7.1 |
| 1960 | 11 | #2,681 | 5.2 |
| 1959 | 20 | #1,863 | 9.4 |
| 1958 | 12 | #2,504 | 5.7 |
| 1957 | 17 | #2,017 | 7.9 |
| 1956 | 17 | #2,013 | 8.0 |
| 1955 | 10 | #2,761 | 4.9 |
| 1954 | 10 | #2,739 | 4.9 |
| 1953 | 23 | #1,628 | 11.7 |
| 1952 | 16 | #2,008 | 8.2 |
| 1951 | 15 | #2,052 | 8.0 |
| 1950 | 12 | #2,319 | 6.7 |
| 1949 | 11 | #2,450 | 6.2 |
| 1948 | 16 | #1,941 | 9.1 |
| 1947 | 17 | #1,914 | 9.3 |
| 1946 | 19 | #1,690 | 11.7 |
| 1945 | 18 | #1,631 | 13.4 |
| 1944 | 19 | #1,627 | 13.9 |
| 1943 | 20 | #1,634 | 14.0 |
| 1942 | 17 | #1,798 | 12.3 |
| 1941 | 22 | #1,484 | 17.9 |
| 1940 | 17 | #1,735 | 14.7 |
| 1939 | 16 | #1,794 | 14.5 |
| 1938 | 12 | #2,184 | 10.8 |
| 1937 | 15 | #1,911 | 14.1 |
| 1936 | 12 | #2,182 | 11.6 |
| 1935 | 17 | #1,756 | 16.3 |
| 1934 | 16 | #1,859 | 15.5 |
| 1933 | 24 | #1,404 | 24.2 |
| 1932 | 15 | #1,994 | 14.4 |
| 1931 | 14 | #2,099 | 13.5 |
| 1930 | 16 | #1,962 | 14.6 |
| 1929 | 33 | #1,236 | 30.7 |
| 1928 | 16 | #2,047 | 14.4 |
| 1927 | 13 | #2,405 | 11.5 |
| 1926 | 11 | #2,721 | 9.9 |
| 1925 | 25 | #1,533 | 22.4 |
| 1924 | 25 | #1,576 | 22.1 |
| 1923 | 20 | #1,811 | 18.2 |
| 1922 | 36 | #1,219 | 33.1 |
| 1921 | 23 | #1,647 | 20.9 |
| 1920 | 16 | #2,127 | 15.0 |
| 1919 | 10 | #2,873 | 10.2 |
| 1918 | 14 | #2,258 | 13.8 |
| 1917 | 16 | #1,984 | 17.3 |
| 1916 | 6 | #3,891 | 6.7 |
| 1915 | 14 | #2,066 | 16.5 |
| 1914 | 15 | #1,684 | 22.9 |
| 1913 | 9 | #2,090 | 17.6 |
| 1912 | 9 | #1,883 | 20.9 |
| 1911 | 8 | #1,385 | 35.4 |
| 1906 | 6 | #1,249 | 45.1 |
Ranks and shares: boys’ names in each year’s SSA file; share of all boys SSA recorded that year.
Is Ysidro a boy’s or a girl’s name?
Ysidro has been recorded only for boys: SSA lists no girls with the name in 106 years of records (it lists a name only in years with 5 or more babies of a sex).
Girls and boys named Ysidro: the SSA national file counts each sex separately.
How many people are named Ysidro, and how old are they?
An estimated 750 Americans named Ysidro and born in the U.S. are alive in 2026 (53% of everyone recorded); the median is 51 years old and half are between 33 and 67. An estimate from SSA’s births and life tables, not a count.
The 2020 Census counted 1,001 people named Ysidro (10 women and girls, 991 men and boys). SSA’s births carried forward to Census day, April 1, 2020, predict 828 born in the U.S. The Census count is 21% above that prediction. Possible reasons: the Census counts people born abroad, whom SSA’s files leave out, and it records the name people give, which SSA may have recorded under another spelling or as part of a compound name.
Living estimate: SSA births carried forward with the survival rates in SSA’s cohort life tables (2024 Trustees Report) for each birth year and sex. How the estimate is made. Count: Census Bureau, first names in the 2020 Census (released April 14, 2026; names reported 100 or more times, with the Bureau’s disclosure-avoidance adjustment).
Where are babies named Ysidro born?
The states with the most babies named Ysidro are Texas, California and Arizona, with 98% of its births recorded by state since 1910; Arizona is not among the ten states with the most births.
| State | Since 1910 | Rank, boys | vs. national |
|---|---|---|---|
| Texas | 525 | not ranked | 5.7× |
| California | 233 | not ranked | 2.1× |
| Arizona | 22 | not ranked | 1.6× |
| New Mexico | 17 | not ranked | 2.0× |
Where Ysidro is more common than its national share predicts
Relative to its national share, Ysidro is most over-represented in Texas: since 1910 it was given 5.7 times as often there as its national share each year would predict.
States: SSA state file, 1910-2025, published May 8, 2026; births count girls and boys together, and the rank is among boys’ names in the state in 2025. The file leaves out any state and year with fewer than 5 babies of the name, so small states are undercounted; each ratio compares the state’s births of Ysidro with the births its national share predicts year by year, for states with at least 100 births of the name.
How common is the spelling Ysidro?
Ysidro is a less common spelling of Isidro: SSA has recorded 1,418 Ysidro and 8,211 Isidro since 1880.
Of these 2 names spelled alike, given to 9,629 babies since 1880, Ysidro is the second most given (15% of them). In 2025 it was given to 6 of their 94 babies (6.4%), again the second most given.
Spelled alike: names in the SSA national file with the same pattern of letters and sounds and at most two letters apart, and Wiktionary’s listed forms; births since 1880 and in 2025, and each name’s peak year, from the SSA national file, published May 8, 2026. Some are separate names, not spellings of one.
Names that rose and fell in the same decades as Ysidro
Names whose births rose and fell across the same decades, measured on each decade’s share of births.
Similar histories: each decade’s share of births, from the SSA national file, 1880-2025, published May 8, 2026. SSA’s notes on the data.
More about Ysidro and names like it
- Compare Ysidro and IsidroBirths, ranks, peak and the living estimate side by side.
- The most given names of the 1920sYsidro peaked in 1922.
- Texas’s most given namesThe state where SSA recorded the most babies named Ysidro since 1910.
- The top names of 1922The year the most babies were named Ysidro.
- The names of Generation XMost people named Ysidro alive today were born 1965-1980.
- Names starting with YMost given first.