County profile · Tennessee
Williamson County, TN market data
Population, household spending and competition for 56 business types in Williamson County, each scored against other counties.
- Population, 2025
- 272,061
- +9.0% since 2020
- Households
- 92,214
- Median household income
- $135,594
- +20.0% vs. 2015–2019, before inflation
- Median home value
- $751,900
- Jobs located here
- 159,658
- Highest market score
- 96
- Convenience stores, #5 of 2,261 scored counties
A site report maps the competitors on map listings around any address in Williamson County by name and distance, and the households and spending within reach. Or open the report at the center of Williamson County. Signed out, you see a blurred preview; on an account, each report is one action.
Free10 actions over 3 days, no cardSurvey estimates 2020–2024 · population estimates 2025 · official business counts 2023 · map listings September 2026 · Data credits · How we measure
What this means
An estimated 272,061 people live in Williamson County, in 92,214 households. Population estimates show Williamson County grew 9.0% from 2020 to 2025, faster than the U.S. (+3.1%). The median household income in Williamson County is $135,594 a year, 68% above the U.S. median of $80,734. That rose 20.0% from the 2015–2019 survey, before inflation.
Set against the U.S., households in Williamson County spend the most on vehicle insurance (an index of 145, where 100 is the U.S. average) and the least on medical and dental services (117, still above the U.S.).
The highest Groundwork market scores in Williamson County are for convenience stores (96), laundromats (95) and gas stations (92). Williamson County ranks #5 of 2,261 scored counties for convenience stores.
Williamson County is part of the Nashville-Davidson–Murfreesboro–Franklin metro area. For its number of households, Williamson County has the most map listings, relative to the U.S., for mortgage brokers and lenders (4.3 times the U.S. rate) and the fewest for tire shops (61% below the U.S. rate).
All 56 business types in Williamson County
Highest Groundwork market score first. Each score compares Williamson County with other counties for that business type, from 0 to 100. Spending per listing divides a whole spending line (all vehicle repairs, all eating out) by one type’s listings: the demand for each competitor, not a business’s revenue. Compare it across markets with its index, where 100 is the U.S. figure for the same type; the real estate types, whose line is all housing costs, show the index only. How the score works.
| Business type | Score | Rank among counties | Listings | Per 10k households | Spending per listing | Spending per listing vs. U.S. (100) | Official establishments |
|---|---|---|---|---|---|---|---|
| Convenience stores | 96 | #5 of 2,261 | 51 | 5.5 | $13.3M | 169 | 5 |
| Laundromats | 95 | #2 of 785 | 7 | 0.8 | $34.7M | 278 | Under 3 |
| Gas stations | 92 | #15 of 2,358 | 74 | 8.0 | $4.2M | 176 | 66 |
| Grocery and convenience stores | 92 | #33 of 2,402 | 132 | 14.3 | $5.1M | 152 | 40 |
| HVAC and plumbing | 91 | #6 of 1,707 | 50 | 5.4 | $7.4M | 155 | 55 |
| Car washes and detailing | 89 | #13 of 1,451 | 28 | 3.0 | $3.8M | 149 | 10 |
| Auto repair shops | 89 | #29 of 2,378 | 127 | 13.8 | $829K | 187 | 61 |
| Auto repair and car care | 88 | #30 of 2,401 | 227 | 24.6 | $464K | 173 | 100 |
| Electricians | 87 | #13 of 1,160 | 15 | 1.6 | $24.5M | 204 | 53 |
| Collision repair and body shops | 87 | #26 of 1,327 | 21 | 2.3 | $5M | 163 | 18 |
| Tire shops | 85 | #37 of 1,530 | 14 | 1.5 | $7.5M | 300 | 15 |
| Pet grooming and boarding | 83 | #32 of 1,461 | 24 | 2.6 | $5M | 197 | 21 |
| Grocery stores | 83 | #138 of 2,070 | 53 | 5.7 | $12.8M | 138 | 35 |
| Home repair trades | 80 | #48 of 2,057 | 127 | 13.8 | $2.9M | 119 | 131 |
| Funeral homes | 79 | #78 of 1,472 | 11 | 1.2 | $1.1M | 166 | 3 |
| Pest control | 76 | #47 of 699 | 19 | 2.1 | $9.8M | 96 | 10 |
| Pizza | 74 | #185 of 2,090 | 68 | 7.4 | $7.2M | 142 | 214 |
| Child care and preschools | 74 | #186 of 1,611 | 74 | 8.0 | $1M | 103 | 52 |
| Fast food and sandwich shops | 71 | #329 of 2,222 | 123 | 13.3 | $4M | 131 | 214 |
| Pet businesses | 70 | #282 of 2,200 | 130 | 14.1 | $926K | 105 | 71 |
| House cleaning | 67 | #139 of 847 | 28 | 3.0 | $6.6M | 104 | 64 |
| Barbershops | 67 | #286 of 1,356 | 38 | 4.1 | $3M | 158 | 18 |
| Restaurants and cafes | 67 | #483 of 2,405 | 1,031 | 111.8 | $476K | 128 | 518 |
| Coffee shops and cafes | 65 | #438 of 2,063 | 108 | 11.7 | $4.5M | 123 | 79 |
| Sit-down restaurants | 64 | #574 of 2,405 | 605 | 65.6 | $811K | 122 | 223 |
| Landscaping and lawn care | 63 | #409 of 1,493 | 70 | 7.6 | $2.7M | 91 | 143 |
| Nail salons | 62 | #354 of 1,328 | 72 | 7.8 | $1.6M | 94 | 20 |
| Bakeries and dessert shops | 61 | #516 of 1,889 | 108 | 11.7 | $4.5M | 110 | 85 |
| Oil change and quick lube | 60 | #156 of 479 | 8 | 0.9 | $13.2M | 96 | 11 |
| Lawn, cleaning and pest control | 60 | #508 of 1,771 | 117 | 12.7 | $1.6M | 95 | 217 |
| Roofing and gutters | 58 | #421 of 1,177 | 62 | 6.7 | $5.9M | 70 | 23 |
| Veterinarians | 58 | #550 of 1,485 | 61 | 6.6 | $2M | 73 | 37 |
| Gyms | 57 | #658 of 1,792 | 104 | 11.3 | $1.2M | 90 | 68 |
| Urgent care and walk-in clinics | 55 | #139 of 325 | 11 | 1.2 | $12.6M | 51 | 7 |
| Property management | 55 | #366 of 910 | 34 | 3.7 | Index only | 96 | 82 |
| Pet stores | 54 | #419 of 974 | 35 | 3.8 | $3.4M | 76 | 13 |
| Dry cleaners | 53 | #235 of 507 | 18 | 2.0 | $13.5M | 86 | 16 |
| Primary care and pediatrics | 53 | #751 of 1,656 | 84 | 9.1 | $1.7M | 93 | 283 |
| Hair salons | 52 | #1,082 of 2,339 | 278 | 30.1 | $407K | 95 | 97 |
| Martial arts and dance studios | 51 | #648 of 1,334 | 72 | 7.8 | $1.7M | 84 | 65 |
| Clothing and shoe stores | 51 | #1,026 of 2,087 | 212 | 23.0 | $1.1M | 90 | 134 |
| Clothing, shoes and laundry | 50 | #1,144 of 2,210 | 294 | 31.9 | $827K | 94 | 150 |
| Optometrists and eye care | 49 | #717 of 1,302 | 57 | 6.2 | $2.4M | 78 | 30 |
| Gyms, studios and classes | 49 | #1,119 of 2,088 | 217 | 23.5 | $561K | 85 | 133 |
| Home inspectors | 47 | #225 of 415 | 13 | 1.4 | Index only | 53 | 10 |
| Yoga, Pilates and fitness studios | 46 | #469 of 777 | 41 | 4.4 | $3M | 73 | 68 |
| Physical therapy | 45 | #863 of 1,422 | 96 | 10.4 | $1.4M | 60 | 51 |
| Salons, barbers and spas | 43 | #1,597 of 2,385 | 635 | 68.9 | $178K | 84 | 196 |
| Chiropractors | 41 | #1,002 of 1,490 | 113 | 12.3 | $1.2M | 51 | 65 |
| Real estate agents and brokers | 40 | #1,627 of 2,176 | 827 | 89.7 | Index only | 40 | 170 |
| Doctors, dentists and clinics | 40 | #1,699 of 2,394 | 1,203 | 130.5 | $115K | 76 | 592 |
| Dentists and orthodontists | 39 | #1,347 of 1,886 | 203 | 22.0 | $684K | 70 | 156 |
| Insurance agencies | 39 | #1,518 of 2,272 | 346 | 37.5 | $754K | 60 | 215 |
| Real estate | 39 | #1,715 of 2,229 | 1,045 | 113.3 | Index only | 40 | 391 |
| Spas and skin care | 38 | #1,347 of 1,769 | 230 | 24.9 | $492K | 56 | 58 |
| Mortgage brokers and lenders | 35 | #719 of 887 | 171 | 18.5 | Index only | 27 | 74 |
Household spending in Williamson County
What households here spend in a year on each line, in total and per household, with the index against the U.S. average (100).
| Spending line | A year, all households | Per household | Index vs. U.S. (100) |
|---|---|---|---|
| Vehicle maintenance and repairs | $105.3M | $1,142 | 119 |
| Gasoline and other fuels | $309.8M | $3,360 | 129 |
| Food away from home | $490.7M | $5,322 | 131 |
| Groceries | $678.9M | $7,362 | 117 |
| Personal care products and services | $113.3M | $1,228 | 122 |
| Child care and other personal services | $76.4M | $828 | 143 |
| Memberships, classes and admissions | $121.8M | $1,321 | 134 |
| Medical and dental services | $138.8M | $1,505 | 117 |
| Pets | $120.4M | $1,306 | 144 |
| Clothing, shoes and related services | $243.2M | $2,638 | 128 |
| Vehicle insurance | $260.8M | $2,829 | 145 |
| Home repairs, maintenance and insurance | $367.6M | $3,986 | 132 |
| Lawn care, cleaning and other household services | $185.8M | $2,015 | 143 |
| Rent and homeowner costs | $1.8B | $19,639 | 118 |
Household spending is estimated from the incomes of the households in each neighborhood, using what households at each income spent nationally in 2024, adjusted for the region. It counts what residents spend, wherever they spend it.
Population and households in Williamson County
- Population, 2025 estimate
- 272,061+9.0% since 2020
- Households
- 92,214
- Median age
- 40.9
- Homes lived in by their owners
- 79%
- Vehicles per household
- 2.1
- Land area
- 583 sq. mi.
- People per square mile
- 447
- Median household income
- $135,594+20.0% vs. 2015–2019, before inflation
- Average household income
- $183,026
- Median home value
- $751,900
- Jobs located here
- 159,658
- Daytime population
- 302,594Residents who don’t work, plus everyone whose job is here
Looking at a specific site in Williamson County?
These figures cover the whole county. A site report draws rings around one address and counts what’s inside them: households, spending, jobs, and the competitors on map listings by name and distance, for any of the 56 business types.
Or open the report at the center of Williamson County. Signed out, you see a blurred preview; on an account, each report is one action.
Free10 actions over 3 days, no cardRelated markets
Nearest counties in Tennessee 8
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- Rutherford County, TN360,646 people
- Cheatham County, TN41,829 people
- Marshall County, TN36,049 people
- Dickson County, TN55,983 people
- Hickman County, TN25,436 people
- Wilson County, TN158,805 people
Questions
How fast is Williamson County, TN growing?
Population estimates put Williamson County at 272,061 people in 2025, up 9.0% since 2020, faster than the U.S. (+3.1%). It has 92,214 households. Against the 2015–2019 survey, median household income rose 20.0%, before inflation.
How much do households in Williamson County, TN spend?
Households in Williamson County spend about $1.8B a year on rent and homeowner costs, $678.9M on groceries and $490.7M on food away from home. Relative to the U.S., household spending in Williamson County runs highest on vehicle insurance (an index of 145, where 100 is the U.S. average) and lowest on medical and dental services (117, still above the U.S.).
Which business types have the highest market scores in Williamson County, TN?
Of the business types scored in Williamson County, convenience stores (96), laundromats (95) and gas stations (92) have the highest Groundwork market scores. For convenience stores, that ranks #5 of 2,261 scored counties.
How does Williamson County, TN compare with the U.S.?
Median household income in Williamson County is $135,594, 68% above the U.S. median of $80,734. The population rose 9.0% from 2020 to 2025, against +3.1% for the U.S. The median home value is $751,900, against $332,700 for the U.S. Against the U.S., map listings per household run highest for mortgage brokers and lenders (4.3 times the U.S. rate) and lowest for tire shops (61% below the U.S. rate).
What is the Groundwork market score?
The Groundwork market score runs from 0 to 100 and compares a market with others of its kind for one business type: states with states, metro areas with metro areas, small-town markets and counties with their own. It weighs household spending per competitor (35%), households per business with payroll (25%), population growth (20%) and spending power (20%), each ranked against those peers. A higher score means that, taken together, the market has more household spending and more households for each business already there, faster population growth and more spending per household than similar markets. It describes a market, not any one site or deal. All 56 business types have a score in Williamson County, each ranked against other counties.
How can I see the market around a specific site?
Run a Groundwork site report on an address in Williamson County. It maps the competitors on map listings near the site and sizes the households and spending within the distance you choose. New accounts get 10 actions over 3 days, no card.
All markets in Tennessee · Every U.S. market · How we measure
Screening a site or an acquisition in Williamson County?
A site report maps the competitors on map listings near an address and sizes the households and spending around it.
The button opens the report at the center of Williamson County. Signed out, you see a blurred preview; on an account, each report is one action.
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.
Figures are estimates for research only. Not investment or real estate advice.