Explore the Family Name Iliff

The meaning of Iliff

English (Midlands): from the Middle English personal name Ilif (Old Norse Ilífr, a nickname from ill-lífr ‘wicked’).

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

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

Based on the Decennial U.S. Census data, the surname Iliff saw a slight increase in popularity from 2000 to 2010. In 2000, it was ranked as the 19,222nd most popular surname with a count of 1,306 individuals, representing 0.48 per 100,000 people. By 2010, the rank had marginally dropped to 20,165 but the count increased slightly to 1,323, representing 0.45 out of every 100,000 people. Despite the drop in rank, this indicates a 1.3% growth in the number of individuals with the Iliff surname over the decade.

	2000	2010	Change
Rank	#19,222	#20,165	-4.91%
Count	1,306	1,323	1.3%
Proportion per 100k	0.48	0.45	-6.25%

Race and Ethnicity of people with the last name Iliff

Looking at the ethnic identity associated with the surname Iliff, according to the Decennial U.S. Census data, there's been some shift from 2000 to 2010. The vast majority of individuals with the Iliff surname identify as White, accounting for 95.10% in 2000 and 93.73% in 2010, which shows a minor decrease of 1.44%. During the same period, Hispanic representation among those with the surname Iliff more than doubled from 1.76% to 3.55%. Similarly, the proportion of American Indian and Alaskan Native identifiers saw a small increase from 0.77% to 0.83%. There were no changes in the percentages of Asian/Pacific Islander and Black identifiers, remaining constant at 0%, while the percentage of those identifying with two or more races decreased by 19.05%.

	2000	2010	Change
White	95.1%	93.73%	-1.44%
Hispanic	1.76%	3.55%	101.7%
Two or More Races	1.68%	1.36%	-19.05%
American Indian and Alaskan Native	0.77%	0.83%	7.79%
Asian/Pacific Islander	0%	0%	0%
Black	0%	0%	0%