Explore the Family Name St. Dennis

The meaning of St. Dennis

Americanized form of French Saint-Denis (see St. Denis). Some characteristic forenames: French Armand, Emile.

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

How common is the last name St. Dennis in the United States?

Based on the Decennial U.S. Census data, the popularity of the surname St. Dennis has slightly decreased over a decade. In 2000, St. Dennis was ranked as the 47,120th most popular surname in the United States, but by 2010 it had dropped to the 52,267th position, marking a decrease of approximately 10.92%. The count of individuals carrying the surname also experienced a minor decline from 424 in 2000 to 397 in 2010, falling by about 6.37%. Similarly, the proportion of the surname St. Dennis per 100,000 people fell by 18.75% over the same period.

	2000	2010	Change
Rank	#47,120	#52,267	-10.92%
Count	424	397	-6.37%
Proportion per 100k	0.16	0.13	-18.75%

Race and Ethnicity of people with the last name St. Dennis

In terms of ethnicity, the Decennial U.S. Census data shows some interesting changes for those carrying the surname St. Dennis between 2000 and 2010. The majority identified as White, although this group saw a slight decrease from 87.97% to 85.14%. The data also reflects a significant increase in Hispanic representation, growing from 3.30% to 5.29%, and a notable rise in those identifying with two or more ethnicities, jumping from 1.89% to 3.02%. The proportion of American Indian and Alaskan Native individuals bearing the St. Dennis name, however, declined from 5.90% to 5.04%. There were no changes observed for Asian/Pacific Islander and Black groups, as these categories remained at 0% in both census years.

	2000	2010	Change
White	87.97%	85.14%	-3.22%
Hispanic	3.3%	5.29%	60.3%
American Indian and Alaskan Native	5.9%	5.04%	-14.58%
Two or More Races	1.89%	3.02%	59.79%
Asian/Pacific Islander	0%	0%	0%
Black	0%	0%	0%