Explore the Family Name Delapp

The meaning of Delapp

1. Irish: variant of Delap. 2. Irish and English: variant of Lappin.

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

How common is the last name Delapp in the United States?

The surname Delapp held the rank of 22,799 in terms of popularity in the United States in the year 2000, and by 2010 it had slipped to 24,288 according to data from the Decennial U.S. Census. The count or number of individuals with this surname also dropped slightly from 1,050 in 2000 to 1,033 in 2010, a decrease of 1.62%. The proportion of people with this surname per 100,000 inhabitants also decreased from 0.39 to 0.35 during this period, showing a reduction of about 10.26%.

20002010Change
Rank#22,799#24,288-6.53%
Count1,0501,033-1.62%
Proportion per 100k0.390.35-10.26%

Race and Ethnicity of people with the last name Delapp

In terms of ethnic identity, the Decennial U.S. Census data shows that the majority of those bearing the Delapp surname identify as White, constituting 89.71% in 2000 and 87.51% in 2010. A small but growing percentage identifies as belonging to two or more races, increasing from 1.05% in 2000 to 1.74% in 2010. The percentage of Delapps identifying as Hispanic also saw an increase from 2.10% to 2.61% within the same time frame. Those identifying as Black made up 6.38% in 2000, and this figure rose slightly to 6.68% by 2010. No individuals with the Delapp surname identified as Asian/Pacific Islander or American Indian and Alaskan Native during these years.

20002010Change
White89.71%87.51%-2.45%
Black6.38%6.68%4.7%
Hispanic2.1%2.61%24.29%
Two or More Races1.05%1.74%65.71%
Asian/Pacific Islander0%0%0%
American Indian and Alaskan Native0%0%0%