Williamson County, TN Population Statistics: Density Map Data
Analyze local population trends, population density map, housing costs, and the local economy.
Area Snapshot Statistics
Key statistics on population, economy, housing, and commuting compared to state and national averages. Explore interactive maps for deeper analysis.
Population: density and quick facts
| Metric | Williamson County | Tennessee Avg | U.S. Average |
|---|---|---|---|
| Population | 257,482 | 7,021,394 | 334,821,731 |
| Population density (per sq mi) | 441.2 | 166.6 | 85.8 |
| Population growth (%/yr) | 3.09% | 0.92% | 0.57% |
| Median age | 40.4 | 37.2 | 37.1 |
| Households | 90,714 | 2,766,521 | 128,459,983 |
Population in Williamson County grew by 53.7% from 2009 to 2023, reaching 254,604 in 2023.
Population Growth 2009–2023
Race & Ethnicity
Economy
Williamson County has a the economy index of A+, which means it is exceptionally prosperous.
| Metric | Williamson County | Tennessee Avg | U.S. Average |
|---|---|---|---|
| Median household income | $131,296 | $67,486 | $78,145 |
| Income growth (%/yr) | 3.97% | 5.42% | 5.07% |
| Unemployment rate | 2.0% | 4.7% | 5.2% |
The median household income in Williamson County is about 95% higher than in Tennessee.
Housing
| Metric | Williamson County | Tennessee Avg | U.S. Average |
|---|---|---|---|
| Median home price | $692,507 | $235,307 | $242,182 |
| Median rent | $1,895 | $1,121 | $1,342 |
| Homeownership rate | 79.8% | 67.0% | 65.1% |
The median home price in Williamson County is about 30.5 years' worth of rent — buying at the median price costs roughly as much as paying the median rent of $1,895 per month for that long.
Commute Time & Mobility
Commuters in Williamson County spend about 52 minutes on the road round trip each working day. Over a typical 250-day work year, that adds up to roughly 218 hours, about 9.1 full days, spent commuting.
| Metric | Williamson County | Tennessee Avg | U.S. Average |
|---|---|---|---|
| One-way commute (min) | 26.2 | 22.4 | 22.5 |
| Round-trip commute (min) | 52.4 | 44.7 | 44.9 |
| Yearly time spent (hours) | 218 | 186 | 187 |
| Estimated yearly cost | $6,765 | $5,774 | $5,803 |
| Work from home | 25.8% | 11.4% | 13.4% |
| Highway traffic (vehicles/day) | 9,902 | 9,259 | 8,813 |
| Local road traffic (vehicles/day) | 2,142 | 1,225 | 1,355 |
Fastest commutes among counties in
Tennessee:
Dyer County (16.2 min), Fentress County (16.2 min), Henry County (16.7 min).
Slowest:
Trousdale County (37.0 min), Houston County (36.2 min), Cannon County (33.2 min).
The average commute time in Williamson County is 26 minutes, longer than the 22 minutes in Tennessee.
Estimated yearly cost applies a single national wage rule of thumb (U.S. Bureau of Labor Statistics average hourly earnings), not a measurement of wages in this area. Traffic volume figures come from proprietary Ticon and TrafficZoom data.
Education & Households
Williamson County has a education index of A+, which means it is exceptionally educated.
| Metric | Williamson County | Tennessee Avg | U.S. Average |
|---|---|---|---|
| Bachelor's degree or higher | 57.6% | 27.5% | 31.6% |
| Average household size | 2.80 | 2.47 | 2.54 |
Highest education index among counties in
Tennessee:
Williamson County (0.4), Davidson County (0.3), Knox County (0.3).
Lowest:
Lake County (0.1), Van Buren County (0.1), Lauderdale County (0.1).
Health
Williamson County has a health index of A, which means it is very healthy.
| Metric | Williamson County | Tennessee Avg | U.S. Average |
|---|---|---|---|
| Life expectancy (years) | 81.2 | 74.8 | 78.3 |
| Self-rated poor health | 9.9% | 19.5% | 16.3% |
| Smokers | 13.4% | 25.1% | 19.0% |
Highest health index among counties in
Tennessee:
Williamson County (0.8), Rutherford County (0.8), Wilson County (0.8).
Lowest:
Clay County (0.8), Lake County (0.8), Hancock County (0.8).
Frequently Asked Questions
Common questions about Williamson County, Tennessee.
What is the population of Williamson County, Tennessee?
The population of Williamson County, Tennessee is 257,482, compared to the U.S. total of 334,821,731.
What is the population density of Williamson County, Tennessee?
The population density of Williamson County, Tennessee is 441.2 people per square mile, compared to the U.S. average of 85.8 people per square mile.
What is the median household income in Williamson County, Tennessee?
The median household income in Williamson County, Tennessee is $131,296, compared to the U.S. median of $78,145.
What is the median home price in Williamson County, Tennessee?
The median home price in Williamson County, Tennessee is $692,507, compared to the U.S. median of $242,182.
What is the unemployment rate in Williamson County, Tennessee?
The unemployment rate in Williamson County, Tennessee is 2.0%, compared to the U.S. average of 5.2%.