Explore the Family Name Lassonde

The meaning of Lassonde

French Canadian: altered form of Lasonde, from French la sonde ‘the probe’, a nickname for a military surgeon. Some characteristic forenames: French Andre, Pierre.

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

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

Based on the Decennial U.S. Census data, the surname Lassonde has seen a slight decrease in popularity over a decade. In 2000, it was ranked 68,569th most common surname and by 2010, it fell to the 72,568th position, showing a minor downturn of 5.83%. Despite this drop in ranking, the number of individuals with this surname remained steady at 268 from 2000 to 2010. The proportion of the surname Lassonde per 100,000 people also fell slightly, from 0.1 in 2000 to 0.09 in 2010, marking a 10% decrease.

	2000	2010	Change
Rank	#68,569	#72,568	-5.83%
Count	268	268	0%
Proportion per 100k	0.1	0.09	-10%

Race and Ethnicity of people with the last name Lassonde

The Decennial U.S. Census data also provides insights into the ethnic identity associated with the Lassonde surname. Overwhelmingly, the surname is associated with individuals identifying as White, representing 91.79% in 2000 and increasing to 94.40% in 2010. A small percentage identified as Hispanic (2.24%), which remained unchanged between 2000 and 2010. In 2000, nearly 3% identified as American Indian and Alaskan Native, but this figure decreased to 1.87% in 2010. Individuals identifying with two or more ethnicities made up 2.61% of the population in 2000, but this dropped to zero by 2010. There were no individuals identifying as Asian/Pacific Islander or Black associated with the Lassonde surname in either census year.

	2000	2010	Change
White	91.79%	94.4%	2.84%
Hispanic	2.24%	2.24%	0%
American Indian and Alaskan Native	2.99%	1.87%	-37.46%
Asian/Pacific Islander	0%	0%	0%
Two or More Races	2.61%	0%	0%
Black	0%	0%	0%