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

DeLeo, 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 DeLeo surname is from the 2010 census data.

Popularity of DeLeo in America

DeLeo is the 9267th most popular name in America based on the data we have collected from the U.S. Census Bureau.

The DeLeo surname appeared 3,513 times in the 2010 census and if you were to sample 100,000 people in the United States, approximately 1 people would have the surname DeLeo.

We can also compare 2010 data for DeLeo 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 DeLeo

The surname DELEO is believed to have originated in Italy during the Middle Ages. It is derived from the Latin phrase "de leo," meaning "of the lion." This suggests that the name may have been initially given to someone who exhibited lion-like qualities or resided near an area associated with lions.

One of the earliest recorded instances of the DELEO name can be found in a 14th-century document from the city of Florence, where a certain Guido DELEO is mentioned as a prominent merchant. This indicates that the name was already well-established in the region at that time.

The DELEO surname is also linked to several notable figures throughout history. In the 15th century, Giovanni DELEO was a renowned artist and sculptor who contributed to the embellishment of various churches and palaces in Rome. His works can still be admired in the Vatican City and other Italian cities.

During the Renaissance period, the DELEO family played a significant role in the intellectual and cultural life of Italy. Lorenzo DELEO (1446-1521) was a celebrated humanist and philosopher who taught at the University of Padua and authored several influential treatises on ethics and rhetoric.

In the 18th century, Carlo DELEO (1712-1786) gained prominence as a brilliant mathematician and astronomer. He made important contributions to the study of celestial mechanics and was elected a member of the prestigious Accademia dei Lincei, one of the oldest scientific academies in Europe.

Another notable figure with the DELEO surname was Giacomo DELEO (1823-1901), a prominent politician and statesman who served as the Prime Minister of the Kingdom of Italy from 1892 to 1893. He played a crucial role in shaping the country's foreign policy and strengthening its international relations.

While the DELEO name originated in Italy, it has since spread to other parts of the world due to migration and immigration. However, the historical records and references mentioned above highlight the surname's deep roots in Italian history and culture.

Race and ethnic origin of people with the last name DeLeo

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

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

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

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