Explore the Family Name Yamauchi
The meaning of Yamauchi
Japanese: written 山内 ‘within the mountains’. The surname, which is sometimes pronounced Yamanouchi, is found mainly in western Japan and the Ryūkyū Islands. Some characteristic forenames: Japanese Hiroshi, Akira, Kazuya, Yuki, Yutaka, Hiroko, Kenji, Koji, Masaharu, Takeshi, Yoichi, Yoshio.
Dictionary of American Family Names, 2nd edition, © Oxford University Press, 2022.
How common is the last name Yamauchi in the United States?
According to the Decennial U.S. Census, the popularity of the surname Yamauchi saw a slight dip between 2000 and 2010. In 2000, Yamauchi was ranked 20,711 in prevalence among all surnames but fell to 21,736 in 2010, marking a 4.95% decrease. The number of individuals with this last name slightly increased from 1,187 to 1,197 during the same period, which represents a modest growth of 0.84%. However, when considering the ratio of Yamauchi per 100,000 people, there was a drop of 6.82%.
| 2000 | 2010 | Change | |
|---|---|---|---|
| Rank | #20,711 | #21,736 | -4.95% |
| Count | 1,187 | 1,197 | 0.84% |
| Proportion per 100k | 0.44 | 0.41 | -6.82% |
Race and Ethnicity of people with the last name Yamauchi
In terms of ethnicity, the Decennial U.S. Census data shows that the majority of those with the Yamauchi surname identify as Asian/Pacific Islander. However, the proportion of individuals identifying as such decreased by 2.37% from 81.55% in 2000 to 79.62% in 2010. During the same time frame, the percentage of Yamauchis with two or more ethnic identities rose significantly by 24.45%, indicating an increasingly mixed heritage within this population. The proportion of Yamauchis identifying as White decreased by 16.60%, while those identifying as Hispanic saw an increase of 36.89%. There were no reported Yamauchis identifying as Black or American Indian and Alaskan Native in either year.
| 2000 | 2010 | Change | |
|---|---|---|---|
| Asian/Pacific Islander | 81.55% | 79.62% | -2.37% |
| Two or More Races | 8.59% | 10.69% | 24.45% |
| White | 7.41% | 6.18% | -16.6% |
| Hispanic | 2.44% | 3.34% | 36.89% |
| Black | 0% | 0% | 0% |
| American Indian and Alaskan Native | 0% | 0% | 0% |