Explore the Family Name Grannan
The meaning of Grannan
Irish: 1. shortened form of MacGrannan, an Anglicized form of Gaelic Mag Raghnainn, a form of Mac Raghnaill ‘son of Raghnall’, a Gaelic form of the Old Norse personal name Rǫgnvaldr ‘ruler of the gods’, cognate with Reynolds. 2. shortened form of Ó Grianáin, see Greenan.
Dictionary of American Family Names, 2nd edition, © Oxford University Press, 2022.
How common is the last name Grannan in the United States?
Based on the Decennial U.S. Census data, the popularity of the surname Grannan has seen a decline between 2000 and 2010. In 2000, it was ranked 40,019th most popular surname but fell to the 44,270th spot in 2010, marking a decrease of 10.62%. The number of individuals with this last name also declined from 516 in 2000 to 486 in 2010, a change of -5.81%. Moreover, the proportion of people with this surname per 100,000 residents decreased by 15.79%.
| 2000 | 2010 | Change | |
|---|---|---|---|
| Rank | #40,019 | #44,270 | -10.62% |
| Count | 516 | 486 | -5.81% |
| Proportion per 100k | 0.19 | 0.16 | -15.79% |
Race and Ethnicity of people with the last name Grannan
Looking at ethnicity distribution for the surname Grannan from the same census data, we see that the overwhelming majority identify as White, although there has been a slight decrease from 98.45% in 2000 to 96.91% in 2010. Individuals identifying as having two or more ethnic identities have emerged by 2010, making up 1.65% of the population with this surname, whereas there were none reported in 2000. There was also a small percentage (0.97%) who identified as Black in 2000, but no such representation in 2010. No individuals with the surname Grannan identified as Asian/Pacific Islander, Hispanic, or American Indian and Alaskan Native in either year.
| 2000 | 2010 | Change | |
|---|---|---|---|
| White | 98.45% | 96.91% | -1.56% |
| Two or More Races | 0% | 1.65% | 0% |
| Asian/Pacific Islander | 0% | 0% | 0% |
| Hispanic | 0% | 0% | 0% |
| Black | 0.97% | 0% | 0% |
| American Indian and Alaskan Native | 0% | 0% | 0% |