Find out how popular the last name Isidor is in the United States and learn more about the meaning, history, and race and ethnic origin of people in America who are named Isidor.

Isidor, like all of the last names we have data for, is identified by the U.S. Census Bureau as a surname which has more than 100 occurrences in the United States in the Decennial Census survey. The most recent statistics we have for the Isidor surname is from the 2010 census data.

Popularity of Isidor in America

Isidor is the 62189th most popular name in America based on the data we have collected from the U.S. Census Bureau.

The Isidor surname appeared 322 times in the 2010 census and if you were to sample 100,000 people in the United States, approximately 0 people would have the surname Isidor.

We can also compare 2010 data for Isidor to data from the previous census in 2000. The table below contains all of the statistics for both years in a side-by-side comparison.

The history of the last name Isidor

The surname Isidor originated in Germany and can be traced back to the 13th century. It is derived from the Old German word "isarn," meaning iron, and was likely an occupational name for a blacksmith or someone who worked with iron. The earliest recorded spelling of the name was "Isernhart" in 1294, found in the records of the town of Essen.

In the 14th century, the name appeared in various forms such as "Isernhuter," "Isenhart," and "Isernhut" in the records of several German towns and villages. One notable bearer of the name was Hans Isernhart, a blacksmith from Nuremberg, who was mentioned in a guild register from 1412.

The name Isidor gained prominence in the 15th century, with the first recorded instance being Johann Isidor, a wealthy merchant from Cologne, born in 1437. Another notable figure from this period was Martin Isidor, a renowned scholar and theologian from Leipzig, who lived from 1458 to 1522.

In the 16th century, the name spread to other parts of Europe, including France and Spain. One famous bearer of the name was Isidore of Seville (560-636), a scholar and historian who became the Archbishop of Seville. His writings on etymology and history were highly influential during the Middle Ages.

The 17th century saw the emergence of several notable individuals with the surname Isidor, such as Johann Isidor Bähr (1625-1688), a German theologian and author, and Caspar Isidor Opiz (1650-1711), a Czech botanist and naturalist.

In the 18th century, the name became more widespread in Eastern Europe, with notable bearers including Isidore Andruzzi (1737-1819), a Russian architect who designed several prominent buildings in St. Petersburg, and Isidore Bukovsky (1786-1842), a Czech poet and writer.

Throughout the 19th century, the surname Isidor continued to be found across Europe, with individuals such as Isidore Geoffroy Saint-Hilaire (1805-1861), a French zoologist and anatomist, and Isidore Singer (1857-1939), a Polish-American scholar and the founding editor of the Jewish Encyclopedia.

Race and ethnic origin of people with the last name Isidor

We also have some data on the ancestry of people with the surname Isidor.

The below race categories are the modified race categories used in the Census Bureau's population estimates program. All people were categorized into six mutually exclusive racial and Hispanic origin groups:

1. White only
2. Black only
3. American Indian and Alaskan Native only
4. Asian and Pacific Islander only
5. Hispanic
6. Two or More Races

For the most recent 2010 census data, the race/ethnic origin breakdown for Isidor was:

Note: Any fields showing (S) means the data was suppressed for privacy so that the data does not in any way identify any specific individuals.

Since we have data from the previous census in 2000, we can also compare the values to see how the popularity of Isidor has changed in the 10 years between the two census surveys.

Data source

The last name data and ethnic breakdown of last names is sourced directly from the Decennial Census survey, conducted every 10 years by the United States Census Bureau.

The history and meaning of the name Isidor was researched and written by our team of onomatology and genealogy experts.

If you have a correction or suggestion to improve the history of Isidor, please contact us.

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