US Most Popular Last Names in the 2010 Census

Updated on December 11, 2025.

Data Source: US Census Bureau.

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In the 2010 Census, the most popular last name in the US was Smith, with a count of 2,442,977 people having that last name at an occurence rate of 828.19 per 100K. The second most popular last name was Johnson (with 1,932,812 people, and an occurence rate of 655.24 per 100K). The third most popular last name was Williams (with 1,625,252 people, and an occurence rate of 550.97 per 100K).

The table below below shows the top 1000 most popular last names in the US in the 2010 Census.