Explore the Family Name De Cosmo
The meaning of De Cosmo
Italian: patronymic from the personal name Cosmo. Some characteristic forenames: Italian Agostino, Benedetto, Carmelo, Vito.
Dictionary of American Family Names, 2nd edition, © Oxford University Press, 2022.
How common is the last name De Cosmo in the United States?
Based on the Decennial U.S. Census, the surname De Cosmo saw a slight decrease in popularity ranking from 2000 to 2010, moving from 65,668th to 65,782nd place. However, despite this drop in rank, the number of individuals with this surname actually increased by 6.74%, from 282 to 301 people. The proportion of De Cosmo's per 100k people remained steady at 0.1 over the decade.
| 2000 | 2010 | Change | |
|---|---|---|---|
| Rank | #65,668 | #65,782 | -0.17% |
| Count | 282 | 301 | 6.74% |
| Proportion per 100k | 0.1 | 0.1 | 0% |
Race and Ethnicity of people with the last name De Cosmo
In terms of ethnic identity, the majority of individuals with the De Cosmo surname identified as White in both 2000 and 2010, with an increase of almost 1% over the decade, according to data from the Decennial U.S. Census. The percentage of De Cosmo's identifying as Hispanic decreased by over 33%, from 2.48% to 1.66%. There were no reported De Cosmo's who identified as Asian/Pacific Islander, Black, or American Indian and Alaskan Native in either census year.
| 2000 | 2010 | Change | |
|---|---|---|---|
| White | 95.74% | 96.68% | 0.98% |
| Hispanic | 2.48% | 1.66% | -33.06% |
| Asian/Pacific Islander | 0% | 0% | 0% |
| Two or More Races | 0% | 0% | 0% |
| Black | 0% | 0% | 0% |
| American Indian and Alaskan Native | 0% | 0% | 0% |