County profile · Tennessee
Decatur County, TN market data
Population, household spending and competition for 56 business types in Decatur County, each scored against other counties.
- Population, 2025
- 11,820
- +3.4% since 2020
- Households
- 4,568
- Median household income
- $45,375
- +8.0% vs. 2015–2019, before inflation
- Median home value
- $139,600
- Jobs located here
- 3,527
- Highest market score
- 78
- Insurance agencies, #275 of 2,272 scored counties
A site report maps the competitors on map listings around any address in Decatur County by name and distance, and the households and spending within reach. Or open the report at the center of Decatur 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 11,820 people live in Decatur County, in 4,568 households. Population estimates show Decatur County grew 3.4% from 2020 to 2025, in step with the U.S. (+3.1%). The median household income in Decatur County is $45,375 a year, 44% below the U.S. median of $80,734. That rose 8.0% from the 2015–2019 survey, before inflation.
Set against the U.S., households in Decatur County spend the most on vehicle insurance (an index of 140, where 100 is the U.S. average) and the least on memberships, classes and admissions (48).
The highest Groundwork market scores in Decatur County are for insurance agencies (78), auto repair shops (55) and real estate businesses (43). Decatur County ranks #275 of 2,272 scored counties for insurance agencies.
For its number of households, Decatur County has the most map listings, relative to the U.S., for gas stations (3.6 times the U.S. rate) and the fewest for medical and dental practices (38% below the U.S. rate).
All 56 business types in Decatur County
Highest Groundwork market score first. Each score compares Decatur 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 |
|---|---|---|---|---|---|---|---|
| Insurance agencies | 78 | #275 of 2,272 | 6 | 13.1 | $2.1M | 166 | 3 |
| Auto repair shops | 55 | #970 of 2,378 | 10 | 21.9 | $434K | 98 | 4 |
| Real estate | 43 | #1,450 of 2,229 | 9 | 19.7 | Index only | 149 | Under 3 |
| Fast food and sandwich shops | 42 | #1,452 of 2,222 | 6 | 13.1 | $2.3M | 74 | 7 |
| Doctors, dentists and clinics | 41 | #1,626 of 2,394 | 24 | 52.5 | $176K | 116 | 11 |
| Auto repair and car care | 41 | #1,627 of 2,401 | 20 | 43.8 | $217K | 81 | 7 |
| Real estate agents and brokers | 40 | #1,571 of 2,176 | 8 | 17.5 | Index only | 133 | Under 3 |
| Pizza | 38 | #1,532 of 2,090 | 5 | 10.9 | $2.7M | 53 | 7 |
| Restaurants and cafes | 33 | #1,930 of 2,405 | 50 | 109.5 | $270K | 73 | 17 |
| Gas stations | 31 | #1,943 of 2,358 | 18 | 39.4 | $807K | 34 | 11 |
| Salons, barbers and spas | 31 | #2,101 of 2,385 | 16 | 35.0 | $204K | 96 | Under 3 |
| Coffee shops and cafes | 28 | #1,818 of 2,063 | 5 | 10.9 | $2.7M | 73 | Under 3 |
| Clothing, shoes and laundry | 28 | #1,894 of 2,210 | 10 | 21.9 | $699K | 79 | Under 3 |
| Sit-down restaurants | 28 | #2,134 of 2,405 | 31 | 67.9 | $436K | 66 | 8 |
| Clothing and shoe stores | 27 | #1,795 of 2,087 | 8 | 17.5 | $873K | 69 | Under 3 |
| Hair salons | 21 | #2,209 of 2,339 | 12 | 26.3 | $273K | 63 | Under 3 |
| Convenience stores | 20 | #2,038 of 2,261 | 13 | 28.5 | $1.8M | 23 | Under 3 |
| Grocery and convenience stores | 18 | #2,258 of 2,402 | 21 | 46.0 | $1.1M | 34 | 5 |
| Grocery stores | 17 | #1,930 of 2,070 | 7 | 15.3 | $3.4M | 37 | 4 |
| Car washes and detailing | Not scored | Not scored | 4 | 8.8 | $1.1M | 43 | Under 3 |
| Gyms | Not scored | Not scored | 4 | 8.8 | $544K | 42 | Under 3 |
| Gyms, studios and classes | Not scored | Not scored | 4 | 8.8 | $544K | 82 | Under 3 |
| Home repair trades | Not scored | Not scored | 4 | 8.8 | $2.6M | 109 | 3 |
| Primary care and pediatrics | Not scored | Not scored | 4 | 8.8 | $1.1M | 59 | 5 |
| Collision repair and body shops | Not scored | Not scored | 3 | 6.6 | $1.4M | 47 | 3 |
| Dentists and orthodontists | Not scored | Not scored | 3 | 6.6 | $1.4M | 143 | 6 |
| Funeral homes | Not scored | Not scored | 3 | 6.6 | $254K | 37 | 3 |
| Landscaping and lawn care | Not scored | Not scored | 3 | 6.6 | $1.8M | 63 | 6 |
| Lawn, cleaning and pest control | Not scored | Not scored | 3 | 6.6 | $1.8M | 110 | 9 |
| Physical therapy | Not scored | Not scored | 3 | 6.6 | $1.4M | 59 | Under 3 |
| Spas and skin care | Not scored | Not scored | 3 | 6.6 | $1.1M | 125 | Under 3 |
| HVAC and plumbing | Not scored | Not scored | 2 | 4.4 | $5.3M | Too few | Under 3 |
| Pet businesses | Not scored | Not scored | 2 | 4.4 | $1.6M | Too few | Under 3 |
| Roofing and gutters | Not scored | Not scored | 2 | 4.4 | $5.3M | Too few | Under 3 |
| Tire shops | Not scored | Not scored | 2 | 4.4 | $2.2M | Too few | Under 3 |
| Bakeries and dessert shops | Not scored | Not scored | 1 | 2.2 | $13.5M | Too few | Under 3 |
| Laundromats | Not scored | Not scored | 1 | 2.2 | $7M | Too few | Under 3 |
| Nail salons | Not scored | Not scored | 1 | 2.2 | $3.3M | Too few | Under 3 |
| Optometrists and eye care | Not scored | Not scored | 1 | 2.2 | $4.2M | Too few | Under 3 |
| Property management | Not scored | Not scored | 1 | 2.2 | Index only | Too few | Under 3 |
| Veterinarians | Not scored | Not scored | 1 | 2.2 | $3.1M | Too few | Under 3 |
| Barbershops | Not scored | Not scored | 0 | 0.0 | None listed | None listed | Under 3 |
| Child care and preschools | Not scored | Not scored | 0 | 0.0 | None listed | None listed | Under 3 |
| Chiropractors | Not scored | Not scored | 0 | 0.0 | None listed | None listed | Under 3 |
| Dry cleaners | Not scored | Not scored | 0 | 0.0 | None listed | None listed | Under 3 |
| Electricians | Not scored | Not scored | 0 | 0.0 | None listed | None listed | 3 |
| Home inspectors | Not scored | Not scored | 0 | 0.0 | None listed | None listed | Under 3 |
| House cleaning | Not scored | Not scored | 0 | 0.0 | None listed | None listed | Under 3 |
| Martial arts and dance studios | Not scored | Not scored | 0 | 0.0 | None listed | None listed | Under 3 |
| Mortgage brokers and lenders | Not scored | Not scored | 0 | 0.0 | None listed | None listed | Under 3 |
| Oil change and quick lube | Not scored | Not scored | 0 | 0.0 | None listed | None listed | Under 3 |
| Pest control | Not scored | Not scored | 0 | 0.0 | None listed | None listed | 3 |
| Pet grooming and boarding | Not scored | Not scored | 0 | 0.0 | None listed | None listed | Under 3 |
| Pet stores | Not scored | Not scored | 0 | 0.0 | None listed | None listed | Under 3 |
| Urgent care and walk-in clinics | Not scored | Not scored | 0 | 0.0 | None listed | None listed | Under 3 |
| Yoga, Pilates and fitness studios | Not scored | Not scored | 0 | 0.0 | None listed | None listed | Under 3 |
Household spending in Decatur 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 | $4.3M | $949 | 99 |
| Gasoline and other fuels | $14.5M | $3,182 | 123 |
| Food away from home | $13.5M | $2,961 | 73 |
| Groceries | $23.9M | $5,223 | 83 |
| Personal care products and services | $3.3M | $716 | 71 |
| Child care and other personal services | $1.4M | $306 | 53 |
| Memberships, classes and admissions | $2.2M | $476 | 48 |
| Medical and dental services | $4.2M | $927 | 72 |
| Pets | $3.1M | $685 | 75 |
| Clothing, shoes and related services | $7M | $1,530 | 74 |
| Vehicle insurance | $12.5M | $2,733 | 140 |
| Home repairs, maintenance and insurance | $10.6M | $2,314 | 77 |
| Lawn care, cleaning and other household services | $5.5M | $1,208 | 85 |
| Rent and homeowner costs | $58.2M | $12,740 | 76 |
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 Decatur County
- Population, 2025 estimate
- 11,820+3.4% since 2020
- Households
- 4,568
- Median age
- 46.8
- Homes lived in by their owners
- 74%
- Vehicles per household
- 2.1
- Land area
- 334 sq. mi.
- People per square mile
- 35
- Median household income
- $45,375+8.0% vs. 2015–2019, before inflation
- Average household income
- $63,847
- Median home value
- $139,600
- Jobs located here
- 3,527
- Daytime population
- 10,690Residents who don’t work, plus everyone whose job is here
Looking at a specific site in Decatur 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 Decatur 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
- Perry County, TN8,697 people
- Henderson County, TN27,980 people
- Hardin County, TN27,249 people
- Chester County, TN17,611 people
- Wayne County, TN16,168 people
- Benton County, TN16,006 people
- Carroll County, TN28,641 people
- Lewis County, TN12,992 people
Questions
How fast is Decatur County, TN growing?
Population estimates put Decatur County at 11,820 people in 2025, up 3.4% since 2020, in step with the U.S. (+3.1%). It has 4,568 households. Against the 2015–2019 survey, median household income rose 8.0%, before inflation.
How much do households in Decatur County, TN spend?
Households in Decatur County spend about $58.2M a year on rent and homeowner costs, $23.9M on groceries and $14.5M on gasoline and other fuels. Relative to the U.S., household spending in Decatur County runs highest on vehicle insurance (an index of 140, where 100 is the U.S. average) and lowest on memberships, classes and admissions (48).
Which business types have the highest market scores in Decatur County, TN?
Of the business types scored in Decatur County, insurance agencies (78), auto repair shops (55) and real estate businesses (43) have the highest Groundwork market scores. For insurance agencies, that ranks #275 of 2,272 scored counties.
How does Decatur County, TN compare with the U.S.?
Median household income in Decatur County is $45,375, 44% below the U.S. median of $80,734. The population rose 3.4% from 2020 to 2025, against +3.1% for the U.S. The median home value is $139,600, against $332,700 for the U.S. Against the U.S., map listings per household run highest for gas stations (3.6 times the U.S. rate) and lowest for medical and dental practices (38% 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. 19 of the 56 business types have a score in Decatur 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 Decatur 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.
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Screening a site or an acquisition in Decatur 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 Decatur 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.