Explore the Family Name Mortlock

The meaning of Mortlock

English: habitational name from Mortlake (Surrey), which derives from an Old English personal name Morta or the Old English word mort ‘young salmon’ + lacu ‘stream’.

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

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

Based on data from the Decennial U.S. Census, the surname Mortlock climbed in popularity between 2000 and 2010, moving up from rank 89,172 to 85,357, a change of 4.28%. The count of individuals with this surname also increased by 13.47% during this period, from 193 to 219. However, the proportion per 100,000 remained steady at 0.07, showing that while the number of people with this surname grew, it did so roughly in line with the overall population.

	2000	2010	Change
Rank	#89,172	#85,357	4.28%
Count	193	219	13.47%
Proportion per 100k	0.07	0.07	0%

Race and Ethnicity of people with the last name Mortlock

In terms of ethnicity, the data from the Decennial U.S. Census reveals changes over the decade. The percentage of individuals identifying as White decreased by 5.25%, dropping from 89.64% in 2000 to 84.93% in 2010. Conversely, there was a rise in the percentage of those identifying as Black, up from 5.7% to 6.39%, an increase of 12.11%. Additionally, for the first time, a portion of people (3.65%) identified as Hispanic in 2010, whereas none had done so in 2000. There was also notable growth in the percentage of people who identify with two or more races, increasing from 2.59% to 3.65%, a change of 40.93%. No individuals reported their ethnic identity as Asian/Pacific Islander or American Indian and Alaskan Native in either year.

	2000	2010	Change
White	89.64%	84.93%	-5.25%
Black	5.7%	6.39%	12.11%
Two or More Races	2.59%	3.65%	40.93%
Hispanic	0%	3.65%	0%
Asian/Pacific Islander	0%	0%	0%
American Indian and Alaskan Native	0%	0%	0%