Explore the Family Name Lammi

The meaning of Lammi

Finnish: habitational name from farms so named, from lammi, a dialect form of lampi ‘pond’ (compare Lampi), chiefly in southwestern Finland and southern Ostrobothnia. In a few cases the name has been adopted during the name-changing campaigns of the early 20th century, mainly to replace Swedish surnames. Some characteristic forenames: Finnish Eino, Reino, Arvo, Taisto, Toivo, Waino.

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

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

Based on the Decennial U.S. Census data, the surname Lammi has maintained consistent popularity in the United States over the years. In 2000, it was ranked 47,838 and slightly dropped to rank 47,878 in 2010, indicating a minor shift of -0.08. The count of individuals with this surname increased from 416 to 442 between 2000 and 2010, an increase of about 6.25%. The proportion per 100k people remained steady at 0.15.

	2000	2010	Change
Rank	#47,838	#47,878	-0.08%
Count	416	442	6.25%
Proportion per 100k	0.15	0.15	0%

Race and Ethnicity of people with the last name Lammi

In terms of ethnicity, the Decennial U.S. Census reveals that the majority of individuals bearing the surname Lammi identify as White, although there has been a slight decrease in this group, dropping from 96.63% in 2000 to 92.53% in 2010. There is also an increase in those identifying with two or more ethnicities, growing from 1.20% to 1.58%. Interestingly, a new group emerged in 2010, with 4.07% identifying as Hispanic, which was not previously recorded in 2000. No individuals with the surname Lammi were reported to be of Asian/Pacific Islander, Black, or American Indian and Alaskan Native descent in either census year.

	2000	2010	Change
White	96.63%	92.53%	-4.24%
Hispanic	0%	4.07%	0%
Two or More Races	1.2%	1.58%	31.67%
Asian/Pacific Islander	0%	0%	0%
Black	0%	0%	0%
American Indian and Alaskan Native	0%	0%	0%