Is Williamson County the best Texas county for your business?

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Now you can skip hours of internet research and jump straight to getting answers with our meaningful at-a-glance Demographics Spreadsheet Report. With the most current & most popular demographic data, it's the perfect starting point for your research about Williamson County and the rest of Texas.

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Williamson County Population

All Williamson County population data above are from the US Census Bureau.

The population data for Williamson County are from the Census' American Community Survey 2018 5-year estimates and the Census' 2019 Population Estimates. The demographic data for Brazoria County, Cameron County, Denton County, and Kendall County are the most current, comparable demographics available from the US Census Bureau, are from the American Community Survey 2018 5-year estimates, and were downloaded on 19 December 2019. Check out our FAQ section for more details.

Williamson County Demographics Summary

population icon Population

With 590,551 people, Williamson County is the 12th most populated county in the state of Texas out of 254 counties. But watch out, Williamson County, because Brazoria County with 374,264 people and Cameron County with 423,163 people are right behind you.

race icon Race & Ethnicity

The largest Williamson County racial/ethnic groups are White (60.1%) followed by Hispanic (24.3%) and Asian (6.4%).

income icon Median Income

In 2018, the median household income of Williamson County residents was $83,679. Williamson County households made slightly more than Denton County households ($83,376) and Kendall County households ($82,390) . However, 6.7% of Williamson County residents live in poverty.

age icon Median Age

The median age for Williamson County residents is 36.1 years young.


86% of people CANNOT find the data they're looking for on the US Census Bureau website. Source: Nielsen Norman Group

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