Explore the Family Name Sio

The meaning of Sio

1. Chinese: variant Romanization of the surname 蕭 (or 肖), based on the Cantonese pronunciation, see Xiao. 2. Samoan: unexplained. 3. Italian (Sardinia): perhaps from a short form of the personal name Desio. 4. Galician (Sió): habitational name from either of two places called Sió in Lugo or Ourense. 5. Hungarian (Sió): probably a topographic name from the stream Sió in Somogy county, a tributary of the river Danube.

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

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

Based on the Decennial U.S. Census data, the surname Sio has seen an increase in popularity over a decade from 2000 to 2010. In 2000, the name was ranked 62,961 but rose to 50,275 by 2010, indicating a growth of 20.15%. The count of individuals with this family name also grew significantly during this period. There were 297 people with the Sio surname recorded in the census of 2000 and this number increased to 416 by 2010, reflecting an impressive 40.07% growth. The proportion of people with this name per 100,000 also climbed up by 27.27% from 0.11 to 0.14.

20002010Change
Rank#62,961#50,27520.15%
Count29741640.07%
Proportion per 100k0.110.1427.27%

Race and Ethnicity of people with the last name Sio

When it comes to ethnic identity, the data from the Decennial U.S. Census shows that the majority of people with the Sio surname identify as Asian/Pacific Islander. This group represented 74.41% in 2000 and slightly decreased to 73.08% in 2010. People identifying with two or more races under the Sio surname saw a significant increase of 173.76%, going from 2.02% in 2000 to 5.53% in 2010. Those who identified as White made up 10.44% in 2000 which declined to 8.41% in 2010. Similarly, Hispanic representation dipped slightly from 10.44% to 10.34%. The percentage of people with the Sio surname identifying as Black dropped completely to zero in 2010 from 2.69% in 2000, while the American Indian and Alaskan Native category remained at zero for both decades.

20002010Change
Asian/Pacific Islander74.41%73.08%-1.79%
Hispanic10.44%10.34%-0.96%
White10.44%8.41%-19.44%
Two or More Races2.02%5.53%173.76%
Black2.69%0%0%
American Indian and Alaskan Native0%0%0%