Explore the Family Name De Leonardis

The meaning of De Leonardis

Italian: patronymic from the personal name Leonardo. It is formed with the Latin ablative plural suffix -is imparting the broader sense ‘belonging to, of’, in this case ‘member of the Leonardi family’ (compare Leonardi). Some characteristic forenames: Italian Antonio, Rocco, Vito, Alfonse, Carlo, Dante, Delio, Lorenzo, Luigi, Pietro, Sal.

Dictionary of American Family Names, 2nd edition, © Oxford University Press, 2022.

How common is the last name De Leonardis in the United States?

Based on the Decennial U.S. Census data, the surname De Leonardis saw a slight decrease in popularity between 2000 and 2010. In 2000, the surname ranked 39,560 in terms of popularity and had a count of 523 individuals with this name. By 2010, although the count increased to 533 individuals, the rank dropped to 40,909, indicating a decline of approximately 3.41% in its relative popularity. The proportion of people with the De Leonardis surname per 100,000 also reduced by 5.26%, from 0.19 in 2000 to 0.18 in 2010.

20002010Change
Rank#39,560#40,909-3.41%
Count5235331.91%
Proportion per 100k0.190.18-5.26%

Race and Ethnicity of people with the last name De Leonardis

Regarding ethnicity, the census data reveals that a vast majority of the De Leonardis population identifies as White. In 2000, 94.84% of individuals with the De Leonardis surname identified as White, and this figure slightly decreased to 94.37% by 2010. There was a notable increase in those identifying as Hispanic over the decade, with a 27.75% growth rate from 3.82% in 2000 to 4.88% in 2010. However, there were no recorded changes for Asian/Pacific Islander, Two or more races, Black, or American Indian and Alaskan Native ethnicities within the De Leonardis population during the observed period.

20002010Change
White94.84%94.37%-0.5%
Hispanic3.82%4.88%27.75%
Asian/Pacific Islander0%0%0%
Two or More Races0%0%0%
Black0%0%0%
American Indian and Alaskan Native0%0%0%