Isidro
Isidro was given to 88 boys in 2025, #1,815 among boys’ names; 8,211 Americans have been recorded with it since 1885 (Social Security Administration, published May 2026).
An estimated 6,670 Americans named Isidro and born in the U.S. are alive in 2026 (81% of everyone recorded); the median is 32 years old and half are between 20 and 47.
Girls and boys together; gaps are years SSA did not record (fewer than 5 births).
Births of Isidro by year: SSA national baby-name file, 1880-2025, published May 8, 2026. SSA’s notes on the data.
What does Isidro mean?
Wiktionary, Spanish section
Isidro is “a male given name, variant of Isidoro, equivalent to English Isidore”
Inherited from Old Spanish Ysidro, Isidro, Esidro (c. 1218), inherited from Latin Īsidōrus. Compare with the learned borrowing Isidoro.
/iˈsidɾo/
Meaning: Wiktionary, Spanish section, as of Sep 25, 2026 (CC BY‑SA 4.0).
How popular is Isidro?
#1,815 among boys’ names, 2025
Isidro rose from #1,922 in 2015 to #1,815 in 2025 among boys’ names; its share of boys born rose from 39.7 to 51.5 per million.
160 babies in 2000, the peak
Isidro peaked in 2000, when 160 boys were given it, #949 among boys’ names. The 88 births of 2025 are 55% of that peak.
| Year | Births | Rank | Per million boys |
|---|---|---|---|
| 2025 | 88 | #1,815 | 51.5 |
| 2024 | 94 | #1,755 | 54.6 |
| 2023 | 78 | #1,975 | 45.6 |
| 2022 | 90 | #1,809 | 51.5 |
| 2021 | 83 | #1,857 | 47.4 |
| 2020 | 74 | #1,951 | 42.9 |
| 2019 | 61 | #2,273 | 34.0 |
| 2018 | 67 | #2,106 | 36.9 |
| 2017 | 69 | #2,041 | 37.3 |
| 2016 | 69 | #2,054 | 36.4 |
Every recorded year (117)
| Year | Births | Rank | Per million boys |
|---|---|---|---|
| 2015 | 76 | #1,922 | 39.7 |
| 2014 | 73 | #1,968 | 38.0 |
| 2013 | 72 | #1,935 | 38.1 |
| 2012 | 92 | #1,670 | 48.5 |
| 2011 | 94 | #1,624 | 49.5 |
| 2010 | 88 | #1,728 | 45.9 |
| 2009 | 113 | #1,476 | 57.0 |
| 2008 | 133 | #1,310 | 65.2 |
| 2007 | 145 | #1,217 | 69.9 |
| 2006 | 131 | #1,279 | 63.7 |
| 2005 | 132 | #1,204 | 66.1 |
| 2004 | 115 | #1,297 | 57.9 |
| 2003 | 148 | #1,049 | 74.9 |
| 2002 | 140 | #1,075 | 72.1 |
| 2001 | 151 | #1,004 | 77.7 |
| 2000 | 160 | #949 | 81.5 |
| 1999 | 138 | #1,012 | 71.9 |
| 1998 | 145 | #956 | 75.9 |
| 1997 | 145 | #931 | 76.9 |
| 1996 | 124 | #1,005 | 65.5 |
| 1995 | 126 | #987 | 66.2 |
| 1994 | 145 | #904 | 75.1 |
| 1993 | 135 | #925 | 68.8 |
| 1992 | 132 | #923 | 66.1 |
| 1991 | 142 | #883 | 70.3 |
| 1990 | 128 | #908 | 62.3 |
| 1989 | 135 | #863 | 67.5 |
| 1988 | 116 | #886 | 60.6 |
| 1987 | 114 | #877 | 61.1 |
| 1986 | 111 | #863 | 60.3 |
| 1985 | 117 | #827 | 63.3 |
| 1984 | 122 | #787 | 67.6 |
| 1983 | 91 | #925 | 50.8 |
| 1982 | 102 | #889 | 56.2 |
| 1981 | 118 | #808 | 65.9 |
| 1980 | 92 | #931 | 51.6 |
| 1979 | 99 | #880 | 57.5 |
| 1978 | 83 | #953 | 50.6 |
| 1977 | 71 | #1,022 | 43.2 |
| 1976 | 82 | #925 | 52.3 |
| 1975 | 69 | #987 | 44.2 |
| 1974 | 77 | #931 | 49.0 |
| 1973 | 71 | #959 | 45.6 |
| 1972 | 62 | #1,027 | 38.2 |
| 1971 | 55 | #1,103 | 31.1 |
| 1970 | 71 | #953 | 38.2 |
| 1969 | 56 | #1,035 | 31.3 |
| 1968 | 51 | #1,039 | 29.3 |
| 1967 | 50 | #1,038 | 28.7 |
| 1966 | 48 | #1,064 | 26.9 |
| 1965 | 56 | #990 | 30.1 |
| 1964 | 69 | #916 | 34.6 |
| 1963 | 58 | #995 | 28.6 |
| 1962 | 65 | #942 | 31.4 |
| 1961 | 47 | #1,150 | 22.1 |
| 1960 | 50 | #1,105 | 23.4 |
| 1959 | 60 | #999 | 28.1 |
| 1958 | 46 | #1,142 | 21.7 |
| 1957 | 53 | #1,044 | 24.6 |
| 1956 | 47 | #1,111 | 22.2 |
| 1955 | 54 | #1,027 | 26.2 |
| 1954 | 50 | #1,058 | 24.5 |
| 1953 | 41 | #1,157 | 20.8 |
| 1952 | 58 | #932 | 29.8 |
| 1951 | 48 | #1,028 | 25.5 |
| 1950 | 62 | #874 | 34.6 |
| 1949 | 50 | #989 | 28.2 |
| 1948 | 70 | #814 | 39.9 |
| 1947 | 37 | #1,198 | 20.2 |
| 1946 | 47 | #992 | 28.9 |
| 1945 | 48 | #932 | 35.7 |
| 1944 | 45 | #969 | 33.0 |
| 1943 | 40 | #1,081 | 28.0 |
| 1942 | 53 | #915 | 38.4 |
| 1941 | 37 | #1,076 | 30.1 |
| 1940 | 48 | #923 | 41.4 |
| 1939 | 41 | #997 | 37.0 |
| 1938 | 33 | #1,137 | 29.8 |
| 1937 | 30 | #1,217 | 28.1 |
| 1936 | 35 | #1,108 | 33.7 |
| 1935 | 25 | #1,378 | 24.0 |
| 1934 | 30 | #1,228 | 29.1 |
| 1933 | 36 | #1,096 | 36.3 |
| 1932 | 35 | #1,148 | 33.5 |
| 1931 | 26 | #1,376 | 25.0 |
| 1930 | 44 | #1,042 | 40.1 |
| 1929 | 35 | #1,183 | 32.5 |
| 1928 | 34 | #1,241 | 30.7 |
| 1927 | 46 | #1,033 | 40.8 |
| 1926 | 46 | #1,025 | 41.4 |
| 1925 | 31 | #1,317 | 27.8 |
| 1924 | 37 | #1,198 | 32.7 |
| 1923 | 32 | #1,288 | 29.2 |
| 1922 | 30 | #1,357 | 27.6 |
| 1921 | 23 | #1,614 | 20.9 |
| 1920 | 24 | #1,570 | 22.5 |
| 1919 | 14 | #2,200 | 14.3 |
| 1918 | 24 | #1,517 | 23.7 |
| 1917 | 20 | #1,668 | 21.6 |
| 1916 | 17 | #1,808 | 19.1 |
| 1915 | 16 | #1,832 | 18.9 |
| 1914 | 17 | #1,519 | 26.0 |
| 1913 | 7 | #2,375 | 13.7 |
| 1912 | 9 | #1,815 | 20.9 |
| 1910 | 6 | #1,499 | 30.9 |
| 1898 | 5 | #1,215 | 40.8 |
| 1885 | 5 | #1,015 | 46.4 |
Ranks and shares: boys’ names in each year’s SSA file; share of all boys SSA recorded that year.
Is Isidro a boy’s or a girl’s name?
Isidro has been recorded only for boys: SSA lists no girls with the name in 117 years of records (it lists a name only in years with 5 or more babies of a sex).
Girls and boys named Isidro: the SSA national file counts each sex separately.
How many people are named Isidro, and how old are they?
6,670 alive in 2026, estimated
That is 81% of the 8,211 Americans ever recorded as Isidro. The median Isidro alive today is 32 years old; half are between 20 and 47.
The 2020 Census counted 17,557 people named Isidro (53 women and girls, 17,504 men and boys). SSA’s births carried forward to Census day, April 1, 2020, predict 6,460 born in the U.S. The Census count is 2.7 times 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.
Alive today, by age
Alive today, by generation
| Generation | Born | Alive |
|---|---|---|
| Silent Generation | 1928-1945 | 142 |
| Baby Boomers | 1946-1964 | 673 |
| Generation X | 1965-1980 | 971 |
| Millennials | 1981-1996 | 1,860 |
| Generation Z | 1997-2012 | 2,030 |
| Generation Alpha | 2013-2025 | 987 |
An estimate, not a count. SSA’s files count people born in the United States who received a Social Security number, so anyone born abroad is not in them; before 1937 most people got a number as adults, and their survival is counted from that age.
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 Isidro born?
| State | Births 2025 | Rank, boys | vs. national |
|---|---|---|---|
| Texas | 30 | #862 | 4.4× |
| California | 26 | #892 | 2.4× |
Where Isidro is more common than its national share predicts
Relative to its national share, Isidro is most over-represented in New Mexico: since 1910 it was given 4.6 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 Isidro with the births its national share predicts year by year, for states with at least 100 births of the name.
Names spelled alike
Of these 3 names spelled alike, given to 12,924 babies since 1880, Isidro is the most given (64% of them). In 2025 it was given to 88 of their 119 babies (74%), again the 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 Isidro
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 Isidro and names like it
- Compare Isidro and IsidoreBirths, ranks, peak and the living estimate side by side.
- The most given names of the 2000sIsidro peaked in 2000.
- Texas’s most given namesThe state where SSA recorded the most babies named Isidro since 1910.
- Spanish namesWiktionary’s origin for Isidro: every such name, by how often it is given.
- The top names of 2000The year the most babies were named Isidro.
- The names of Generation ZMost people named Isidro alive today were born 1997-2012.
- Names starting with IMost given first.