Dellarocca last name popularity, history, and meaning

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

Meaning of Dellarocca

An Italian surname meaning "of the rock" or "from the rock".

Dellarocca, 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 Dellarocca surname is from the 2010 census data.

Popularity of Dellarocca in America

Dellarocca is the 55962nd most popular name in America based on the data we have collected from the U.S. Census Bureau.

The Dellarocca surname appeared 366 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 Dellarocca.

We can also compare 2010 data for Dellarocca 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.

2010 2000 Change (%)
Rank 55962 53047 5.35%
Count 366 366 0.00%
Proportion per 100k 0.12 0.14 -15.38%

The history of the last name Dellarocca

The surname DELLAROCCA originated in Italy, likely in the medieval period between the 5th and 15th centuries. It is believed to be derived from the Italian words "della" meaning "of" and "rocca" meaning "rock" or "fortified place." This suggests that the name may have originally referred to someone who lived near or was associated with a rocky area or a fortified settlement.

One of the earliest recorded instances of the name can be found in the "Codice Diplomatico Longobardo," a collection of historical documents from the Lombard period in Italy, dating back to the 8th century. The name appears in various spellings, such as "de la Rocca" and "della Rocca," indicating its connection to the Italian word for "rock."

In the 13th century, a notable figure named Guglielmo DELLAROCCA was a prominent jurist and legal scholar from the city of Bologna. He authored several works on canon law and served as a judge in the ecclesiastical courts of the time.

Another historical figure with this surname was Giovanni DELLAROCCA, a Venetian merchant and explorer who lived in the 15th century. He is known for his travels to the Middle East and his accounts of the trade routes and cultures he encountered during his journeys.

During the Renaissance period, the DELLAROCCA family played a significant role in the artistic and cultural life of Florence. One member, Tommaso DELLAROCCA (1460-1528), was a renowned painter and sculptor, renowned for his religious works and portraits of nobility.

In the 17th century, Pietro DELLAROCCA (1607-1685) was a prominent architect and engineer from Naples. He designed several notable buildings and fortifications in the city, including the Palazzo Reale and the Castel Sant'Elmo.

The surname DELLAROCCA has also been associated with various place names throughout Italy, such as Rocca di Papa, a town in the Metropolitan City of Rome, and Rocca Priora, a municipality in the province of Rome. These place names further reinforce the connection between the surname and the word "rocca," suggesting that the family may have originated from or been associated with these or similar locations.

Race and ethnic origin of people with the last name Dellarocca

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

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 Dellarocca was:

Race/Ethnicity Percentage Total Occurrences
Non-Hispanic White Only 89.07% 326
Non-Hispanic Black Only 0.00% 0
Non-Hispanic Asian and Pacific Islander Only (S)% (S)
Non-Hispanic American Indian and Alaskan Native (S)% (S)
Non-Hispanic of Two or More Races (S)% (S)
Hispanic Origin 8.47% 31

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 Dellarocca has changed in the 10 years between the two census surveys.

2010 2000 Change (%)
White 89.07% 91.26% -2.43%
Black 0.00% (S)% (S)%
Asian and Pacific Islander (S)% (S)% (S)%
American Indian and Alaskan Native (S)% 0.00% (S)%
Two or More Races (S)% 1.37% (S)%
Hispanic 8.47% 6.83% 21.44%

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

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

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"Dellarocca last name popularity, history, and meaning". NameCensus.com. Accessed on August 24, 2025. http://namecensus.com/last-names/dellarocca-surname-popularity/.

"Dellarocca last name popularity, history, and meaning". NameCensus.com, http://namecensus.com/last-names/dellarocca-surname-popularity/. Accessed 24 August, 2025

Dellarocca last name popularity, history, and meaning. NameCensus.com. Retrieved from http://namecensus.com/last-names/dellarocca-surname-popularity/.

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