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

Ilar, 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 Ilar surname is from the 2010 census data.

Popularity of Ilar in America

Ilar is the 103181st most popular name in America based on the data we have collected from the U.S. Census Bureau.

The Ilar surname appeared 174 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 Ilar.

We can also compare 2010 data for Ilar 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 Ilar

The surname ILAR is believed to have originated in Italy during the Middle Ages. It is thought to be derived from the Latin word "ilari," which means "joyful" or "cheerful." The name may have been given to someone with a particularly happy or jovial disposition.

In the 13th century, records show the name Ilar appearing in the town of Siena, Italy. It is possible that the name arose as a nickname or descriptive term before becoming a hereditary surname. Similar spellings from this time period include Ilari and Ilario.

One of the earliest known references to the name Ilar can be found in a 1379 document from the city of Florence. This document mentions a landowner named Giovanni Ilar, who owned a vineyard on the outskirts of the city.

In the 15th century, the name Ilar began to spread beyond Italy. Records show a merchant named Pietro Ilar residing in Barcelona, Spain, in 1467. It is likely that he or his ancestors had immigrated from Italy, bringing the surname with them.

One notable bearer of the Ilar name was Lucrezia Ilar, a 16th-century Italian artist known for her portraits and religious paintings. She was born in Venice in 1520 and died in 1598.

Another significant figure with the Ilar surname was Girolamo Ilar, an Italian mathematician and astronomer who lived from 1565 to 1639. He made important contributions to the study of celestial mechanics and the motion of planets.

In the 17th century, the name Ilar appears in records from the city of Genoa, Italy. A merchant named Antonio Ilar is mentioned in a 1621 document detailing a trade agreement with the Republic of Venice.

One of the earliest known instances of the Ilar name in England can be found in the parish records of St. Mary's Church in Southampton, which mention the birth of a child named Elizabeth Ilar in 1674. This suggests that individuals with the surname had begun to migrate from Italy to other parts of Europe by this time.

Lastly, it is worth mentioning Matteo Ilar, an Italian composer and musician from the 18th century. Born in Milan in 1720, he is known for his operas and sacred works, many of which were performed throughout Italy during his lifetime. He died in 1790.

Race and ethnic origin of people with the last name Ilar

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

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 Ilar 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 Ilar 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 Ilar was researched and written by our team of onomatology and genealogy experts.

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

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