Isidro
Boy name · #1810 in 2025 · Very rare
How old is the name Isidro? In official American birth records, Isidro has been tracked continuously since 1885, giving it 140 years of documented American history.
Isidro is currently the #1810 boy name in the United States — 88 babies received it in 2025. A decade ago it stood at #1910, so the name has been rising over the past ten years. Roughly one in every 20,455 boys born in 2025 was named Isidro.
Babies named Isidro per year. Source: Official national birth records.
The 140-year story
Isidro first appears in the Social Security records in 1885, when 5 boys received the name. Its peak came in 2000, when 160 boys were named Isidro — good for #949 that year. Today's parents encounter it on its way down the popularity curve, which for many parents is exactly the appeal. Following the curve matters more than today's snapshot: a name's position on its rise-peak-decline arc is the best predictor of how common it will feel in a kindergarten class five years from now.
Unlock the 5-year forecast and compare Isidro against up to 5 other names.
Uniqueness: will there be another Isidro in class?
On our rarity read — which blends how common Isidro is today with its five-year momentum — the name reads as "very rare". A high score means genuine rarity — your Isidro will likely be the only one in the room, with the occasional spelling-out as the price.
Where Isidro is most common
State-level data for Isidro is too sparse in 2025 to rank by rate — in most states its count falls below the SSA's per-state reporting threshold (counts under 5 are withheld).
Names like Isidro
Statistically, parents drawn to Isidro tend to be choosing among names with similar popularity arcs, era profiles, and sounds — the closest matches in our model are Genaro, Lazaro, Alexandro, Ramiro, and Pedro.
GenaroLazaroAlexandroRamiroPedroLisandroMauroAlvaro
Rank history (last 25 years)
| Year | Babies named Isidro | Rank |
|---|---|---|
| 2025 | 88 | #1808 |
| 2024 | 94 | #1752 |
| 2023 | 78 | #1970 |
| 2022 | 90 | #1804 |
| 2021 | 83 | #1853 |
| 2020 | 74 | #1946 |
| 2019 | 61 | #2265 |
| 2018 | 67 | #2101 |
| 2017 | 69 | #2032 |
| 2016 | 69 | #2047 |
| 2015 | 76 | #1910 |
| 2014 | 73 | #1959 |
| 2013 | 72 | #1931 |
| 2012 | 92 | #1668 |
| 2011 | 94 | #1620 |
| 2010 | 88 | #1725 |
| 2009 | 113 | #1472 |
| 2008 | 133 | #1303 |
| 2007 | 145 | #1215 |
| 2006 | 131 | #1273 |
| 2005 | 132 | #1201 |
| 2004 | 115 | #1292 |
| 2003 | 148 | #1049 |
| 2002 | 140 | #1076 |
| 2001 | 151 | #1004 |
Frequently asked questions
How old is the name Isidro?
In official American birth records, the name Isidro first appeared in 1885 (over 140 years ago), when 5 newborn boys received the name. It has over a century of continuous American history.
Is Isidro a popular boy name?
Isidro ranked #1810 among boys in 2025 with 88 babies given the name — outside the top 500, making it an uncommon pick. Ten years earlier it ranked #1910.
When was the name Isidro most popular?
Isidro peaked in 2000, when 160 American boys received the name (ranked #949 that year). Since 2000 the name has declined from that high.
How rare is the name Isidro?
In 2025, roughly 1 in 20,455 newborn American boys was named Isidro. On our rarity scale (rarity blended with momentum) we classify it as "very rare".
Data source: Official American birth records, 1880–2025, national and state files. Counts reflect registered birth records for American families.