Explore the Family Name Mcillwain

The meaning of Mcillwain

Irish (northern) and Scottish: variant of McElwain.

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

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

Based on the Decennial U.S. Census data, the surname Mcillwain has seen a notable increase in popularity from 2000 to 2010. In the year 2000, Mcillwain was ranked as the 62,577th most popular surname, but by 2010 it had moved up to the 60,045th position, marking an improvement of over 4%. The total count of individuals bearing this surname also saw growth during this time period, with an increase of approximately 12% from 299 to 336. Despite these changes, the proportion of people per 100,000 with the surname Mcillwain remained constant at 0.11.

	2000	2010	Change
Rank	#62,577	#60,045	4.05%
Count	299	336	12.37%
Proportion per 100k	0.11	0.11	0%

Race and Ethnicity of people with the last name Mcillwain

Considering ethnicity, the Decennial U.S. Census data reveals that the majority of people with the Mcillwain surname identify as White, although this majority slightly decreased from 90.3% in 2000 to 84.23% in 2010. The percentage of those identifying as Black saw a modest rise from 8.03% to 9.52%, indicating an increase of around 19%. Interestingly, the data registers a shift in the Hispanic representation, which was non-existent in the 2000 census, but made up 4.17% of the Mcillwains by 2010. As for other ethnic identities like Asian/Pacific Islander and American Indian and Alaskan Native, the numbers remain at zero with no change recorded between the two censuses. Similarly, there was no record of individuals identifying as two or more races.

	2000	2010	Change
White	90.3%	84.23%	-6.72%
Black	8.03%	9.52%	18.56%
Hispanic	0%	4.17%	0%
Asian/Pacific Islander	0%	0%	0%
Two or More Races	0%	0%	0%
American Indian and Alaskan Native	0%	0%	0%