County profile · Illinois
Jefferson County, IL market data
Population, household spending and competition for 56 business types in Jefferson County, each scored against other counties.
- Population, 2025
- 36,147
- −2.3% since 2020
- Households
- 14,820
- Median household income
- $63,118
- +26.5% vs. 2015–2019, before inflation
- Median home value
- $126,000
- Jobs located here
- 20,339
- Highest market score
- 66
- Bakeries and dessert shops, #354 of 1,889 scored counties
A site report maps the competitors on map listings around any address in Jefferson County by name and distance, and the households and spending within reach. Or open the report at the center of Jefferson 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 36,147 people live in Jefferson County, in 14,820 households. Population estimates put the population change in Jefferson County from 2020 to 2025 at −2.3%, against +3.1% for the U.S. The median household income in Jefferson County is $63,118 a year, 22% below the U.S. median of $80,734. That rose 26.5% from the 2015–2019 survey, before inflation.
Set against the U.S., households in Jefferson County spend the most on vehicle maintenance and repairs (an index of 112, where 100 is the U.S. average) and the least on child care and other personal services (56).
The highest Groundwork market scores in Jefferson County are for bakeries and dessert shops (66), coffee shops and cafes (63) and gyms and studios (60). Jefferson County ranks #354 of 1,889 scored counties for bakeries and dessert shops.
Jefferson County is part of the Mount Vernon area. For its number of households, Jefferson County has the most map listings, relative to the U.S., for collision repair and body shops (2.2 times the U.S. rate) and the fewest for real estate businesses (46% below the U.S. rate).
All 56 business types in Jefferson County
Highest Groundwork market score first. Each score compares Jefferson 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 |
|---|---|---|---|---|---|---|---|
| Bakeries and dessert shops | 66 | #354 of 1,889 | 6 | 4.0 | $8.5M | 206 | 3 |
| Coffee shops and cafes | 63 | #495 of 2,063 | 9 | 6.1 | $5.7M | 153 | 3 |
| Gyms, studios and classes | 60 | #575 of 2,088 | 12 | 8.1 | $885K | 134 | 4 |
| Hair salons | 59 | #736 of 2,339 | 26 | 17.5 | $508K | 118 | 3 |
| Salons, barbers and spas | 56 | #832 of 2,385 | 46 | 31.0 | $287K | 135 | 6 |
| Grocery and convenience stores | 55 | #976 of 2,402 | 26 | 17.5 | $3.2M | 95 | 6 |
| Grocery stores | 49 | #1,041 of 2,070 | 9 | 6.1 | $9.3M | 100 | 5 |
| Gyms | 48 | #976 of 1,792 | 8 | 5.4 | $1.3M | 102 | 4 |
| Chiropractors | 47 | #824 of 1,490 | 7 | 4.7 | $2.7M | 113 | 5 |
| Primary care and pediatrics | 47 | #923 of 1,656 | 8 | 5.4 | $2.4M | 133 | 27 |
| Tire shops | 46 | #876 of 1,530 | 7 | 4.7 | $2.3M | 91 | Under 3 |
| Home repair trades | 40 | #1,490 of 2,057 | 17 | 11.5 | $2.1M | 88 | 18 |
| Spas and skin care | 39 | #1,272 of 1,769 | 12 | 8.1 | $1.1M | 126 | Under 3 |
| Convenience stores | 39 | #1,510 of 2,261 | 14 | 9.4 | $6M | 76 | Under 3 |
| Real estate | 39 | #1,656 of 2,229 | 31 | 20.9 | Index only | 143 | 12 |
| Auto repair shops | 38 | #1,732 of 2,378 | 38 | 25.6 | $417K | 94 | 19 |
| Funeral homes | 36 | #1,071 of 1,472 | 6 | 4.0 | $370K | 55 | 3 |
| Real estate agents and brokers | 36 | #1,784 of 2,176 | 27 | 18.2 | Index only | 130 | 8 |
| Restaurants and cafes | 35 | #1,819 of 2,405 | 145 | 97.8 | $352K | 95 | 59 |
| Auto repair and car care | 35 | #1,850 of 2,401 | 73 | 49.3 | $217K | 81 | 23 |
| Dentists and orthodontists | 33 | #1,544 of 1,886 | 18 | 12.1 | $1M | 107 | 15 |
| Gas stations | 33 | #1,852 of 2,358 | 24 | 16.2 | $1.7M | 72 | 20 |
| Lawn, cleaning and pest control | 32 | #1,501 of 1,771 | 12 | 8.1 | $1.4M | 82 | 18 |
| Collision repair and body shops | 31 | #1,091 of 1,327 | 10 | 6.7 | $1.6M | 51 | 4 |
| Landscaping and lawn care | 31 | #1,250 of 1,493 | 9 | 6.1 | $1.8M | 63 | 10 |
| Clothing, shoes and laundry | 31 | #1,821 of 2,210 | 36 | 24.3 | $731K | 83 | 10 |
| Pizza | 30 | #1,792 of 2,090 | 15 | 10.1 | $3.4M | 67 | 29 |
| Roofing and gutters | 29 | #1,003 of 1,177 | 5 | 3.4 | $7.3M | 86 | Under 3 |
| Clothing and shoe stores | 29 | #1,748 of 2,087 | 28 | 18.9 | $940K | 74 | 10 |
| Fast food and sandwich shops | 28 | #1,895 of 2,222 | 24 | 16.2 | $2.1M | 70 | 29 |
| Sit-down restaurants | 28 | #2,113 of 2,405 | 91 | 61.4 | $562K | 85 | 26 |
| Car washes and detailing | 27 | #1,265 of 1,451 | 9 | 6.1 | $1.8M | 70 | 4 |
| Doctors, dentists and clinics | 25 | #2,210 of 2,394 | 137 | 92.4 | $138K | 90 | 61 |
| Optometrists and eye care | 24 | #1,152 of 1,302 | 8 | 5.4 | $2.4M | 75 | 6 |
| HVAC and plumbing | 24 | #1,595 of 1,707 | 11 | 7.4 | $3.3M | 70 | 14 |
| Pet businesses | 21 | #2,089 of 2,200 | 21 | 14.2 | $524K | 60 | Under 3 |
| Insurance agencies | 12 | #2,223 of 2,272 | 30 | 20.2 | $831K | 66 | 23 |
| Pet grooming and boarding | 11 | #1,440 of 1,461 | 11 | 7.4 | $1M | 39 | Under 3 |
| Child care and preschools | Not scored | Not scored | 4 | 2.7 | $1.2M | 121 | Under 3 |
| Martial arts and dance studios | Not scored | Not scored | 4 | 2.7 | $2.7M | 132 | Under 3 |
| Nail salons | Not scored | Not scored | 4 | 2.7 | $3.3M | 198 | Under 3 |
| Physical therapy | Not scored | Not scored | 4 | 2.7 | $4.7M | 197 | 4 |
| Barbershops | Not scored | Not scored | 3 | 2.0 | $4.4M | 234 | Under 3 |
| Dry cleaners | Not scored | Not scored | 3 | 2.0 | $8.8M | 56 | Under 3 |
| Pet stores | Not scored | Not scored | 3 | 2.0 | $3.7M | 81 | Under 3 |
| Veterinarians | Not scored | Not scored | 3 | 2.0 | $3.7M | 135 | Under 3 |
| Laundromats | Not scored | Not scored | 2 | 1.3 | $13.2M | Too few | Under 3 |
| Mortgage brokers and lenders | Not scored | Not scored | 2 | 1.3 | Index only | Too few | Under 3 |
| Oil change and quick lube | Not scored | Not scored | 2 | 1.3 | $7.9M | Too few | Under 3 |
| Pest control | Not scored | Not scored | 2 | 1.3 | $8.3M | Too few | 3 |
| Electricians | Not scored | Not scored | 1 | 0.7 | $36.5M | Too few | 4 |
| Home inspectors | Not scored | Not scored | 1 | 0.7 | Index only | Too few | Under 3 |
| House cleaning | Not scored | Not scored | 1 | 0.7 | $16.6M | Too few | 5 |
| Property management | Not scored | Not scored | 1 | 0.7 | Index only | Too few | Under 3 |
| Urgent care and walk-in clinics | Not scored | Not scored | 1 | 0.7 | $18.9M | Too few | 4 |
| Yoga, Pilates and fitness studios | Not scored | Not scored | 0 | 0.0 | None listed | None listed | 4 |
Household spending in Jefferson 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 | $15.9M | $1,070 | 112 |
| Gasoline and other fuels | $40.9M | $2,763 | 106 |
| Food away from home | $51.1M | $3,448 | 85 |
| Groceries | $83.9M | $5,663 | 90 |
| Personal care products and services | $13.2M | $892 | 89 |
| Child care and other personal services | $4.8M | $327 | 56 |
| Memberships, classes and admissions | $10.6M | $717 | 73 |
| Medical and dental services | $18.9M | $1,275 | 99 |
| Pets | $11M | $743 | 82 |
| Clothing, shoes and related services | $26.3M | $1,776 | 86 |
| Vehicle insurance | $24.9M | $1,681 | 86 |
| Home repairs, maintenance and insurance | $36.5M | $2,463 | 82 |
| Lawn care, cleaning and other household services | $16.6M | $1,120 | 79 |
| Rent and homeowner costs | $191.8M | $12,941 | 78 |
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 Jefferson County
- Population, 2025 estimate
- 36,147−2.3% since 2020
- Households
- 14,820
- Median age
- 42.2
- Homes lived in by their owners
- 72%
- Vehicles per household
- 1.9
- Land area
- 571 sq. mi.
- People per square mile
- 64
- Median household income
- $63,118+26.5% vs. 2015–2019, before inflation
- Average household income
- $80,324
- Median home value
- $126,000
- Jobs located here
- 20,339
- Daytime population
- 40,708Residents who don’t work, plus everyone whose job is here
Looking at a specific site in Jefferson 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 Jefferson County. Signed out, you see a blurred preview; on an account, each report is one action.
Free10 actions over 3 days, no cardRelated markets
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- Washington County, IL13,627 people
- Wayne County, IL15,973 people
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- Clay County, IL13,052 people
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Questions
How fast is Jefferson County, IL growing?
Population estimates put Jefferson County at 36,147 people in 2025, down 2.3% since 2020, against +3.1% for the U.S. It has 14,820 households. Against the 2015–2019 survey, median household income rose 26.5%, before inflation.
How much do households in Jefferson County, IL spend?
Households in Jefferson County spend about $191.8M a year on rent and homeowner costs, $83.9M on groceries and $51.1M on food away from home. Relative to the U.S., household spending in Jefferson County runs highest on vehicle maintenance and repairs (an index of 112, where 100 is the U.S. average) and lowest on child care and other personal services (56).
Which business types have the highest market scores in Jefferson County, IL?
Of the business types scored in Jefferson County, bakeries and dessert shops (66), coffee shops and cafes (63) and gyms and studios (60) have the highest Groundwork market scores. For bakeries and dessert shops, that ranks #354 of 1,889 scored counties.
How does Jefferson County, IL compare with the U.S.?
Median household income in Jefferson County is $63,118, 22% below the U.S. median of $80,734. The population fell 2.3% from 2020 to 2025, against +3.1% for the U.S. The median home value is $126,000, against $332,700 for the U.S. Against the U.S., map listings per household run highest for collision repair and body shops (2.2 times the U.S. rate) and lowest for real estate businesses (46% 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. 38 of the 56 business types have a score in Jefferson 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 Jefferson 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 Jefferson 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 Jefferson 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.