Explore the Family Name Duplain
The meaning of Duplain
French and Channel Islands (Alderney): topographic name from Old French plain, an adjective meaning ‘flat’ and a noun meaning ‘plain’, with fused preposition and definite article du ‘from the’. Compare Plain 2.
Dictionary of American Family Names, 2nd edition, © Oxford University Press, 2022.
How common is the last name Duplain in the United States?
Based on the Decennial U.S. Census data, the surname Duplain has seen an increase in popularity from 2000 to 2010. In 2000, it was ranked as the 90,652nd most popular surname and jumped up to the 86,645th spot in 2010, reflecting a 4.42% increase in popularity. The number of people with this surname also grew from 189 in 2000 to 215 in 2010, which is a 13.76% increase.
| 2000 | 2010 | Change | |
|---|---|---|---|
| Rank | #90,652 | #86,645 | 4.42% |
| Count | 189 | 215 | 13.76% |
| Proportion per 100k | 0.07 | 0.07 | 0% |
Race and Ethnicity of people with the last name Duplain
With regard to ethnicity, again based on the Decennial U.S. Census data, the majority of people with the surname Duplain identified as White both in 2000 and 2010, at 93.12% and 92.09% respectively. However, there was a slight decrease of 1.11% in this category between the two years. Meanwhile, there was a noticeable increase in those identifying as Black from 3.17% to 3.72%. Interestingly, the proportion of Duplains who identified as Hispanic rose from zero in 2000 to 3.26% in 2010. The categories Asian/Pacific Islander and American Indian and Alaskan Native remained at zero throughout the decade while the category Two or more races dropped from 2.65% in 2000 to zero in 2010.
| 2000 | 2010 | Change | |
|---|---|---|---|
| White | 93.12% | 92.09% | -1.11% |
| Black | 3.17% | 3.72% | 17.35% |
| Hispanic | 0% | 3.26% | 0% |
| Asian/Pacific Islander | 0% | 0% | 0% |
| Two or More Races | 2.65% | 0% | 0% |
| American Indian and Alaskan Native | 0% | 0% | 0% |