Explore the Family Name Dumontier

The meaning of Dumontier

French: habitational name, with fused preposition and definite article du ‘from the’, denoting someone from any of several places in northern France called Le Montier (see Montier 1). History: In North America, this surname was originally (also) a secondary surname or dit (‘also called’) name, now found among the descendants of Jean Guyon du Buisson from France (see Guyon), through his grandson Alexis-Jean Guyon dit Dumontier.

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

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

Based on the Decennial U.S. Census data, the surname Dumontier has seen a noticeable increase in popularity from 2000 to 2010. In 2000, Dumontier was ranked as the 118,954th most popular surname in the United States; however, by 2010, it had ascended to the 112,568th spot, signifying an upward shift of 5.37%. During this same period, the number of individuals with the Dumontier surname grew from 135 to 156, an increase of 15.56%. Despite these changes, the proportion of Dumontiers per 100,000 people remained constant at 0.05.

20002010Change
Rank#118,954#112,5685.37%
Count13515615.56%
Proportion per 100k0.050.050%

Race and Ethnicity of people with the last name Dumontier

Turning to ethnicity, the Decennial U.S. Census data provides insights into the ethnic identity associated with the name Dumontier. The majority of individuals with this surname identified as White, making up 78.52% in 2000 and 73.08% in 2010. However, there was a significant increase in those identifying as belonging to two or more races, skyrocketing from 4.44% in 2000 to 8.97% in 2010, a change of over 102%. Meanwhile, those identifying as American Indian and Alaskan Native decreased by approximately 18%, and for the first time, in 2010, 5.13% identified as Hispanic. There were no recorded instances of individuals identifying as Asian/Pacific Islander or Black in either census year.

20002010Change
White78.52%73.08%-6.93%
American Indian and Alaskan Native14.81%12.18%-17.76%
Two or More Races4.44%8.97%102.03%
Hispanic0%5.13%0%
Asian/Pacific Islander0%0%0%
Black0%0%0%