Explore the Family Name Ouchi

The meaning of Ouchi

Japanese (Ōuchi): written 大内 ‘large house’. It is found mostly in northeastern Japan. A noble family of Suō province (now part of Yamaguchi prefecture) took the name from the village where they resided. According to legend, they were descended from a Korean prince who immigrated to Japan in 611. It is also pronounced Ōchi (see Ochi 2). Some characteristic forenames: Japanese Masahiro, Akiko, Akira, Chiaki, Harumi, Haruto, Hideo, Hiro, Ichiro, Ikuo, Isamu, Jiro.

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

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

The surname Ouchi has seen a significant increase in popularity over the past decade, according to data from the Decennial U.S. Census. In 2000, Ouchi was ranked 95,091 in terms of popularity, but jumped to rank 62,045 by 2010 - a substantial rise of approximately 34.75%. The total count of individuals bearing this surname also surged by 81.46% from 178 in 2000 to 323 in 2010. Consequently, the proportion of this surname per 100,000 people increased by 57.14%, moving from 0.07 to 0.11.

20002010Change
Rank#95,091#62,04534.75%
Count17832381.46%
Proportion per 100k0.070.1157.14%

Race and Ethnicity of people with the last name Ouchi

When looking at the ethnic identity associated with the surname Ouchi, the Decennial U.S. Census data shows that the most prominent ethnicity is Asian/Pacific Islander, despite seeing a slight decrease from 89.33% in 2000 to 80.50% in 2010. Interestingly, there has been a significant growth in the number of individuals identifying as two or more races, showing an increase of around 90.29% over the same period. The percentage of white individuals with this surname also rose from 3.37% to 6.19%. There were no recorded instances of this surname among individuals identifying as Hispanic, Black, or American Indian and Alaskan Native for both census years.

20002010Change
Asian/Pacific Islander89.33%80.5%-9.88%
Two or More Races6.18%11.76%90.29%
White3.37%6.19%83.68%
Hispanic0%0%0%
Black0%0%0%
American Indian and Alaskan Native0%0%0%