Explore the Family Name Si

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

Based on the Decennial U.S. Census data, the surname Si has experienced a rise in popularity within the United States. In the year 2000, it ranked 32,743rd among all surnames, but by 2010, it had risen to 22,158th—an increase of 32.33%. The count of individuals with this surname also increased significantly from 661 in 2000 to 1,166 in 2010, marking a growth rate of 76.4%. This translates into an increase in proportion per 100,000 people from 0.25 to 0.4, highlighting the growing prevalence of the Si surname across the country.

20002010Change
Rank#32,743#22,15832.33%
Count6611,16676.4%
Proportion per 100k0.250.460%

Race and Ethnicity of people with the last name Si

In terms of ethnicity, the Si surname is most commonly associated with Asian/Pacific Islander heritage. Data from the Decennial U.S. Census reveals that in 2000, 74.89% of individuals with the surname Si identified as Asian/Pacific Islanders—a figure that rose to 84.91% by 2010. Meanwhile, the percentage of those identifying as White dropped from 13.46% to 8.92%, and those identifying as Hispanic decreased from 4.08% to 2.14%. The percentage of Black individuals also dropped from 4.84% to 3.00%. There was no change noted for individuals who identify under two or more races or as American Indian and Alaskan Native.

20002010Change
Asian/Pacific Islander74.89%84.91%13.38%
White13.46%8.92%-33.73%
Black4.84%3%-38.02%
Hispanic4.08%2.14%-47.55%
Two or More Races0%0%0%
American Indian and Alaskan Native0%0%0%