Explore the Family Name Adachi
The meaning of Adachi
Japanese: variously written, usually 足立, meaning ‘foot’ and ‘stand’. It is a habitational name found mainly in northern Japan, from Adachi-ga-hara, a place in Fukushima prefecture. The Adachi of Dewa (now Akita prefecture) descend from Fujiwara no Yamakage (824–88). Some characteristic forenames: Japanese Kenji, Atsushi, Fumio, Hiroshi, Jiro, Minoru, Takashi, Taro, Yoshiyuki, Hideyo, Ichiro, Masashi.
Dictionary of American Family Names, 2nd edition, © Oxford University Press, 2022.
How common is the last name Adachi in the United States?
According to the data from the Decennial U.S. Census, the popularity of the surname Adachi showed subtle changes between 2000 and 2010. The rank of the surname dropped slightly from 27,289 in 2000 to 28,131 in 2010, marking a decrease of 3.09%. However, the count of individuals with the Adachi surname increased by 2.16%, growing from 833 in 2000 to 851 in 2010. Consequently, the proportion of the population with this surname per 100,000 people decreased by 6.45% over the decade.
| 2000 | 2010 | Change | |
|---|---|---|---|
| Rank | #27,289 | #28,131 | -3.09% |
| Count | 833 | 851 | 2.16% |
| Proportion per 100k | 0.31 | 0.29 | -6.45% |
Race and Ethnicity of people with the last name Adachi
The Decennial U.S. Census data also provides insights into the ethnicity of individuals with the Adachi surname. Over the decade, there was a significant shift in its ethnic identity distribution. The proportion identifying as Asian/Pacific Islander decreased by 10.50 percentage points, moving from 84.03% in 2000 to 75.21% in 2010. During the same period, those identifying with two or more races experienced a significant increase of 88.24%, jumping from 6.12% to 11.52%. There were also increases in the proportions of individuals identifying as White (28.70% increase) and Hispanic (6.82% increase). Notably, percentages for Black and American Indian and Alaskan Native identities appeared for the first time in 2010, recorded at 1.29% and 0.82% respectively.
| 2000 | 2010 | Change | |
|---|---|---|---|
| Asian/Pacific Islander | 84.03% | 75.21% | -10.5% |
| Two or More Races | 6.12% | 11.52% | 88.24% |
| White | 6.48% | 8.34% | 28.7% |
| Hispanic | 2.64% | 2.82% | 6.82% |
| Black | 0% | 1.29% | 0% |
| American Indian and Alaskan Native | 0% | 0.82% | 0% |