Explore the Family Name Mcisaac
The meaning of Mcisaac
Scottish: Anglicized form of Gaelic Mac Iosaig ‘son of Iosag’, Gaelic form of the Biblical personal name Isaac.
Dictionary of American Family Names, 2nd edition, © Oxford University Press, 2022.
How common is the last name Mcisaac in the United States?
Based on the Decennial U.S. Census, the popularity of the surname McIsaac saw a decrease in rank from 20,785 in 2000 to 21,307 in 2010 marking a change of -2.51%. However, despite the decline in ranking, the count of individuals bearing this surname increased by 4.15% during the same period. The proportion per 100k also experienced a slight dip from 0.44 in 2000 to 0.42 in 2010, a reduction of 4.55%.
| 2000 | 2010 | Change | |
|---|---|---|---|
| Rank | #20,785 | #21,307 | -2.51% |
| Count | 1,181 | 1,230 | 4.15% |
| Proportion per 100k | 0.44 | 0.42 | -4.55% |
Race and Ethnicity of people with the last name Mcisaac
In terms of ethnic identity, the data from the Decennial U.S. Census indicates some changes between 2000 and 2010. There was a slight increase in the percentage of people with the McIsaac surname who identified as White, from 94.50% to 95.53%, an increase of 1.09%. The percentage identifying as Black also increased from 1.27% to 1.54%, a 21.26% change. On the other hand, those identifying as Two or more races declined significantly by 40.45%, from 1.78% to 1.06%. Similarly, the percentage identifying as Hispanic decreased slightly from 1.35% to 1.30%, a change of -3.70%. Lastly, the 2010 Census marked the first time individuals with the McIsaac surname identified themselves as Asian/Pacific Islander, while no change was recorded under American Indian and Alaskan Native.
| 2000 | 2010 | Change | |
|---|---|---|---|
| White | 94.5% | 95.53% | 1.09% |
| Black | 1.27% | 1.54% | 21.26% |
| Hispanic | 1.35% | 1.3% | -3.7% |
| Two or More Races | 1.78% | 1.06% | -40.45% |
| Asian/Pacific Islander | 0% | 0.57% | 0% |
| American Indian and Alaskan Native | 0% | 0% | 0% |