Isidro
Derived from the Greek name Isidoros, meaning "gift of Isis," the Egyptian goddess of fertility and magic.
According to the 2010 US Census Bureau surname tables, roughly 2,468 Americans carry the last name Isidro. That puts it at #14,127 in the national surname ranking, appearing at a frequency of 0.72 per 100,000 people (about 1 in 138,879 residents).
This page is the full Name Census profile for the Isidro surname. You will find the Census Bureau frequency data, an ancestry and ethnicity breakdown based on self-reported demographics, the name's meaning and origin where available, and answers to the most common questions people ask about this surname.
Bearers in the US
2.5K
1 in 138,879
Census rank
#14,127
2010 decennial data
Per 100,000
0.7
Frequency rate
Recorded bearers
2.1K
rare in the US
Popularity narrative
The Census Bureau recorded 2,127 bearers of the surname Isidro in its 2010 decennial surname file. At a rate of 0.72 per 100,000 residents, it holds the 14127th position in the national surname ranking.
Among Census respondents with the surname Isidro, the largest self-reported group is Hispanic at 67.2%. The next largest groups are Asian/Pacific Islander (27.5%) and White (3.3%).
Origin
Meaning and origin of Isidro
The surname Isidro has its origins in Spain, where it first emerged in the medieval period. It is derived from the Spanish form of the Latin name Isidorus, which itself comes from the Greek words "isos" meaning "equal" and "doron" meaning "gift". This suggests the name may have originally referred to someone who was perceived as being of equal standing or possessing equal gifts.
Isidro is a patronymic surname, meaning it was originally formed by adding a prefix or suffix to the given name of an ancestor. In this case, the Spanish suffix "-o" was added to the name Isidoro to create the surname Isidro. This practice of deriving surnames from given names was common across medieval Europe.
One of the earliest recorded instances of the surname Isidro can be found in the Becerro de Behetrías, a 14th century census-like record of landowners and vassals in Castile. An entry from 1352 mentions one "Ferran Isidro" from the town of Villarmentero. Place names like this often provided the basis for surnames in that era.
The surname also has ties to Saint Isidore of Seville (c.560-636), a scholar and cleric who served as Archbishop of Seville and is regarded as the last of the Fathers of the Church. His influential writings and teachings likely popularized the name Isidoro/Isidro in Spain during his lifetime and the centuries after.
Other notable individuals with the surname Isidro include Juan del Isidro (1515-1594), a Spanish composer of sacred music during the Renaissance, and José Isidro Fabela Alfaro (1882-1964), a Mexican diplomat who represented his country at the League of Nations in the 1920s. Painter Francisco Isidro de Gárate (1804-1869) was a pioneer of Venezuelan romantic art in the 19th century.
Demographics
Ancestry and ethnicity for Isidro
Among Census respondents with the surname Isidro, the largest self-reported group is Hispanic at 67.2%. The next largest groups are Asian/Pacific Islander (27.5%) and White (3.3%).
The bar chart below shows how Isidro bearers described their own race and ethnicity on the 2010 Census form. The Census Bureau groups responses into six broad categories: White, Black or African American, Hispanic or Latino, Asian and Pacific Islander, American Indian and Alaska Native, and Two or More Races. When a category has too few respondents for a given surname, the Bureau suppresses the figure to protect individual privacy, which is why some names show fewer than six slices.
Keep in mind that these are self-reported numbers. A person's surname does not determine their race or ethnicity, and the distribution you see here reflects the specific population who happened to carry the Isidro surname at the time of the 2010 Census, not any inherent property of the name itself.
- Hispanic or Latino67.2%
- Asian and Pacific Islander27.5%
- White3.3%
- Two or more races1.4%
- Black or African American0.3%
- American Indian and Alaska Native0.2%
Year on year
2000 vs 2010 Census
How has the Isidro surname changed between Census years? The chart shows bearer count side by side, and the table compares rank, count, and frequency.
Census year comparison
| Metric | 2000 | 2010 | Change |
|---|---|---|---|
| Rank | #20,367 | #14,127 | 30.6% |
| Count | 1,213 | 2,127 | 75.4% |
| Per 100K | 0.45 | 0.72 | 60.0% |
Between the 2000 and 2010 Census, the number of Isidro bearers went from 1,213 to 2,127 (+75.4% change). The surname moved up 6,240 positions in the national ranking, going from #20,367 to #14,127.
FAQ
Isidro surname: questions and answers
How common is the last name Isidro?
The surname Isidro holds position #14,127 in the US Census Bureau's surname ranking, with an estimated 2,468 living bearers. It occurs at a rate of 0.72 per 100,000 Americans.
What is the ethnic background of the Isidro surname?
Among Census respondents with the surname Isidro, the largest self-reported group is Hispanic at 67.2%. The next largest groups are Asian/Pacific Islander (27.5%) and White (3.3%). These figures come from the 2010 Census Bureau surname tables, based on how respondents described their own race and ethnicity.
Where does this surname data come from?
All surname statistics on Name Census are drawn from the US Census Bureau's decennial surname frequency tables. These tables list every surname that appeared 100 or more times in the 2010 Census, along with a frequency rate and self-reported demographic breakdown. You can read the full explanation on our methodology page.