Explore the Family Name Mctiernan

The meaning of Mctiernan

Irish: Anglicized form of Gaelic Mac Tighearnáin, a patronymic from a pet form of the personal name Tighearnan ‘lord, master’ (Old Irish tigern). See McKiernan, from the lenited form of the personal name.

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

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

Based on the Decennial U.S. Census data, the surname Mctiernan has seen a slight increase in popularity from 2000 to 2010. In 2000, this surname was ranked 39,240 across all surnames in the United States. By 2010, it had moved up to rank 38,801, marking an improvement of 1.12 percent. The count of individuals with the Mctiernan surname also went up during this time period, rising from 528 in 2000 to 569 in 2010, which signifies a 7.77 percent increase. However, its proportion per 100,000 people slightly decreased by 5 percent.

	2000	2010	Change
Rank	#39,240	#38,801	1.12%
Count	528	569	7.77%
Proportion per 100k	0.2	0.19	-5%

Race and Ethnicity of people with the last name Mctiernan

When it comes to ethnicity, the Decennial U.S. Census data reveals that the majority of individuals with the Mctiernan surname identify as white, although there was a minor decrease in this demographic from 96.21 percent in 2000 to 95.08 percent in 2010. The percentage of Mctiernans who identify as Hispanic showed a significant increase, moving from 2.84 percent in 2000 to 3.51 percent in 2010, indicating a 23.59 percent change. As for other ethnic identities such as Asian/Pacific Islander, Black, and American Indian/Alaskan Native, the data was either not available or suppressed for privacy reasons. No Mctiernans reported belonging to two or more races in either year.

	2000	2010	Change
White	96.21%	95.08%	-1.17%
Hispanic	2.84%	3.51%	23.59%
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%