Explore the Family Name Oi
The meaning of Oi
1. Japanese (Ōi): written 大井 ‘large well’. It is found in central and eastern Japan. 2. Japanese (Ōi): written 多 ‘many’. It was pronounced Oho in ancient times and is listed in the Shinsen shōjiroku. It is not common in modern Japan. 3. Chinese: variant Romanization of the surname 黃, see Huang 1. 4. Chinese: variant Romanization of the surname 韋, see Wei 3.
Dictionary of American Family Names, 2nd edition, © Oxford University Press, 2022.
How common is the last name Oi in the United States?
Based on the Decennial U.S. Census, the popularity of the surname Oi has slightly declined between 2000 and 2010. In 2000, Oi ranked 84,631 in popularity with a count of 206 bearers, representing a proportion of 0.08 per 100,000 residents. By 2010, this rank had dropped to 89,403, despite the number of individuals with this surname increasing by one to 207. This indicates that while the total number of people with the surname Oi increased, its overall prevalence compared to other surnames decreased, leading to a decrease in proportion per 100,000 residents to 0.07, marking a change of -12.5%.
| 2000 | 2010 | Change | |
|---|---|---|---|
| Rank | #84,631 | #89,403 | -5.64% |
| Count | 206 | 207 | 0.49% |
| Proportion per 100k | 0.08 | 0.07 | -12.5% |
Race and Ethnicity of people with the last name Oi
The Decennial U.S. Census data also reveals interesting trends about the ethnic identity associated with the surname Oi. The vast majority of individuals with this surname identified as Asian/Pacific Islander, with percentages of 82.52% in 2000 and 84.06% in 2010, indicating a slight increase. Those identifying as White or belonging to two or more races made up the remaining major groups, with proportions of 7.77% and 6.80% respectively in 2000, and 8.21% and 5.80% in 2010. It should be noted that no individuals with the surname Oi identified as Hispanic, Black, or American Indian and Alaskan Native during these periods.
| 2000 | 2010 | Change | |
|---|---|---|---|
| Asian/Pacific Islander | 82.52% | 84.06% | 1.87% |
| White | 7.77% | 8.21% | 5.66% |
| Two or More Races | 6.8% | 5.8% | -14.71% |
| Hispanic | 0% | 0% | 0% |
| Black | 0% | 0% | 0% |
| American Indian and Alaskan Native | 0% | 0% | 0% |