Williamson County Dashboard

From 2010 to 2023, Williamson County's population grew by 44.4%, compared with 12.1% in Tennessee and 8.5% nationally. That works out to about 2.86% per year for the county.

By 2023, the county's population index reached 144.4 (2010=100), compared with 112.1 for Tennessee and 108.5 for the U.S.

Between 2011 and 2023, the county's population increased in 13 out of 13 years. Annual growth has averaged about 2.87% with relatively low volatility.

The largest annual increase was 3.91% between 2019 and 2020, when the population grew by about 9,314 people.

In 2023, white (non-Hispanic) residents made up about 81.5% of the population, compared with 87.3% in 2010.

Between 2010 and 2023, the share of the population that is Asian (non-Hispanic) rose by 2.6 percentage points, while white (non-Hispanic) fell by 5.8 points. Overall, the white (non-Hispanic) share declined from 87.3% to 81.5%.

From 2010 to 2023, the 65+ population grew by 136.0% and its share of the population rose from 9.1% to 14.7%. By contrast, the 0–4 group grew 13.5% and its share fell from 7.0% to 5.4%.

Residents aged 20–64 still comprise roughly 56.6% of the population, similar to 2010, even as the 65+ share has increased.

Between 2010 and 2023, the 55-59 age group grew by about 297.8% (from 4,251 to 16,912 people), and the 60-64 group grew by 177.7%. By contrast, the 30-34 group grew -15.7% over the same period. Growth in the 55-59 band was faster among females (367.2% vs 238.6%).