County profile · Illinois
Clinton County, IL market data
Population, household spending and competition for 56 business types in Clinton County, each scored against other counties.
- Population, 2025
- 37,128
- +0.6% since 2020
- Households
- 14,570
- Median household income
- $86,588
- +29.9% vs. 2015–2019, before inflation
- Median home value
- $192,400
- Jobs located here
- 12,557
- Highest market score
- 78
- Spas and skin care, #84 of 1,769 scored counties
A site report maps the competitors on map listings around any address in Clinton County by name and distance, and the households and spending within reach. Or open the report at the center of Clinton 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 37,128 people live in Clinton County, in 14,570 households. Population estimates put the population change in Clinton County from 2020 to 2025 at +0.6%, slower than the U.S. (+3.1%). The median household income in Clinton County is $86,588 a year, 7% above the U.S. median of $80,734. That rose 29.9% from the 2015–2019 survey, before inflation.
Set against the U.S., households in Clinton County spend the most on vehicle maintenance and repairs (an index of 128, where 100 is the U.S. average) and the least on child care and other personal services (76).
The highest Groundwork market scores in Clinton County are for spas and skin care studios (78); primary care and pediatric clinics (77); and salons, barbers and spas (75). Clinton County ranks #84 of 1,769 scored counties for spas and skin care studios.
Clinton County is part of the St. Louis metro area. For its number of households, Clinton County has the most map listings, relative to the U.S., for landscaping and lawn care companies (2.4 times the U.S. rate) and the fewest for real estate businesses (61% below the U.S. rate).
All 56 business types in Clinton County
Highest Groundwork market score first. Each score compares Clinton 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 |
|---|---|---|---|---|---|---|---|
| Spas and skin care | 78 | #84 of 1,769 | 5 | 3.4 | $3M | 347 | Under 3 |
| Primary care and pediatrics | 77 | #114 of 1,656 | 5 | 3.4 | $4.3M | 244 | 13 |
| Salons, barbers and spas | 75 | #173 of 2,385 | 46 | 31.6 | $331K | 155 | 5 |
| Tire shops | 74 | #182 of 1,530 | 5 | 3.4 | $3.6M | 143 | Under 3 |
| Dentists and orthodontists | 73 | #197 of 1,886 | 11 | 7.5 | $2M | 201 | 9 |
| Coffee shops and cafes | 71 | #279 of 2,063 | 13 | 8.9 | $4.6M | 125 | 4 |
| Bakeries and dessert shops | 70 | #254 of 1,889 | 7 | 4.8 | $8.6M | 207 | 8 |
| Hair salons | 68 | #377 of 2,339 | 33 | 22.6 | $461K | 107 | 3 |
| Fast food and sandwich shops | 68 | #452 of 2,222 | 20 | 13.7 | $3M | 99 | 17 |
| Gyms | 66 | #321 of 1,792 | 10 | 6.9 | $1.4M | 108 | Under 3 |
| Real estate agents and brokers | 65 | #355 of 2,176 | 19 | 13.0 | Index only | 205 | 6 |
| Clothing, shoes and laundry | 64 | #571 of 2,210 | 25 | 17.2 | $1.2M | 137 | 6 |
| Real estate | 63 | #448 of 2,229 | 22 | 15.1 | Index only | 223 | 12 |
| Clothing and shoe stores | 63 | #582 of 2,087 | 18 | 12.4 | $1.7M | 132 | 6 |
| Doctors, dentists and clinics | 62 | #657 of 2,394 | 81 | 55.6 | $268K | 176 | 39 |
| Convenience stores | 60 | #767 of 2,261 | 14 | 9.6 | $6.5M | 83 | Under 3 |
| Restaurants and cafes | 59 | #812 of 2,405 | 158 | 108.4 | $380K | 103 | 50 |
| Martial arts and dance studios | 58 | #439 of 1,334 | 7 | 4.8 | $2M | 100 | Under 3 |
| Gyms, studios and classes | 58 | #693 of 2,088 | 21 | 14.4 | $669K | 101 | Under 3 |
| Physical therapy | 57 | #519 of 1,422 | 6 | 4.1 | $3.6M | 151 | 10 |
| Pizza | 53 | #922 of 2,090 | 21 | 14.4 | $2.9M | 56 | 17 |
| Gas stations | 52 | #1,089 of 2,358 | 24 | 16.5 | $1.9M | 78 | 17 |
| Sit-down restaurants | 52 | #1,090 of 2,405 | 80 | 54.9 | $751K | 113 | 29 |
| Auto repair shops | 52 | #1,092 of 2,378 | 36 | 24.7 | $496K | 111 | 24 |
| Veterinarians | 51 | #709 of 1,485 | 5 | 3.4 | $2.6M | 96 | 6 |
| Chiropractors | 50 | #726 of 1,490 | 9 | 6.2 | $2.4M | 101 | 7 |
| Pet grooming and boarding | 49 | #758 of 1,461 | 6 | 4.1 | $2.2M | 86 | 4 |
| Grocery and convenience stores | 49 | #1,251 of 2,402 | 34 | 23.3 | $2.7M | 79 | 12 |
| Auto repair and car care | 49 | #1,264 of 2,401 | 65 | 44.6 | $274K | 102 | 31 |
| Pet businesses | 43 | #1,396 of 2,200 | 21 | 14.4 | $625K | 71 | 10 |
| Car washes and detailing | 40 | #997 of 1,451 | 11 | 7.5 | $1.6M | 64 | 3 |
| Grocery stores | 38 | #1,431 of 2,070 | 14 | 9.6 | $6.5M | 70 | 10 |
| Child care and preschools | 37 | #1,159 of 1,611 | 8 | 5.5 | $802K | 80 | 14 |
| Electricians | 36 | #893 of 1,160 | 5 | 3.4 | $8.2M | 69 | 13 |
| Funeral homes | 35 | #1,104 of 1,472 | 7 | 4.8 | $322K | 47 | 5 |
| Home repair trades | 33 | #1,759 of 2,057 | 23 | 15.8 | $1.8M | 74 | 37 |
| Lawn, cleaning and pest control | 31 | #1,557 of 1,771 | 19 | 13.0 | $988K | 59 | 22 |
| Collision repair and body shops | 29 | #1,130 of 1,327 | 11 | 7.5 | $1.6M | 53 | 9 |
| HVAC and plumbing | 28 | #1,529 of 1,707 | 14 | 9.6 | $2.9M | 62 | 21 |
| Insurance agencies | 26 | #1,933 of 2,272 | 31 | 21.3 | $876K | 70 | 17 |
| Landscaping and lawn care | 23 | #1,420 of 1,493 | 17 | 11.7 | $1.1M | 38 | 19 |
| Laundromats | Not scored | Not scored | 4 | 2.7 | $7.5M | 60 | Under 3 |
| Nail salons | Not scored | Not scored | 4 | 2.7 | $3.8M | 228 | Under 3 |
| Optometrists and eye care | Not scored | Not scored | 4 | 2.7 | $5.4M | 173 | Under 3 |
| Pet stores | Not scored | Not scored | 4 | 2.7 | $3.3M | 73 | Under 3 |
| Roofing and gutters | Not scored | Not scored | 4 | 2.7 | $10.3M | 122 | 3 |
| Yoga, Pilates and fitness studios | Not scored | Not scored | 4 | 2.7 | $3.5M | 87 | Under 3 |
| Barbershops | Not scored | Not scored | 3 | 2.1 | $5.1M | 269 | Under 3 |
| House cleaning | Not scored | Not scored | 2 | 1.4 | $9.4M | Too few | 3 |
| Mortgage brokers and lenders | Not scored | Not scored | 2 | 1.4 | Index only | Too few | Under 3 |
| Oil change and quick lube | Not scored | Not scored | 2 | 1.4 | $8.9M | Too few | Under 3 |
| Dry cleaners | Not scored | Not scored | 1 | 0.7 | $30.1M | Too few | Under 3 |
| Home inspectors | Not scored | Not scored | 1 | 0.7 | Index only | Too few | Under 3 |
| Pest control | Not scored | Not scored | 0 | 0.0 | None listed | None listed | Under 3 |
| Property management | Not scored | Not scored | 0 | 0.0 | None listed | None listed | 4 |
| Urgent care and walk-in clinics | Not scored | Not scored | 0 | 0.0 | None listed | None listed | Under 3 |
Household spending in Clinton 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 | $17.8M | $1,224 | 128 |
| Gasoline and other fuels | $44.9M | $3,079 | 119 |
| Food away from home | $60.1M | $4,126 | 101 |
| Groceries | $91.2M | $6,257 | 99 |
| Personal care products and services | $15.2M | $1,044 | 104 |
| Child care and other personal services | $6.4M | $440 | 76 |
| Memberships, classes and admissions | $14.1M | $965 | 98 |
| Medical and dental services | $21.7M | $1,490 | 116 |
| Pets | $13.1M | $901 | 99 |
| Clothing, shoes and related services | $30.1M | $2,065 | 101 |
| Vehicle insurance | $27.1M | $1,863 | 95 |
| Home repairs, maintenance and insurance | $41.2M | $2,829 | 94 |
| Lawn care, cleaning and other household services | $18.8M | $1,288 | 91 |
| Rent and homeowner costs | $212.1M | $14,559 | 87 |
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 Clinton County
- Population, 2025 estimate
- 37,128+0.6% since 2020
- Households
- 14,570
- Median age
- 41.8
- Homes lived in by their owners
- 80%
- Vehicles per household
- 2.1
- Land area
- 474 sq. mi.
- People per square mile
- 78
- Median household income
- $86,588+29.9% vs. 2015–2019, before inflation
- Average household income
- $108,402
- Median home value
- $192,400
- Jobs located here
- 12,557
- Daytime population
- 31,816Residents who don’t work, plus everyone whose job is here
Looking at a specific site in Clinton 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 Clinton 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 Illinois 8
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- Bond County, IL16,716 people
- Marion County, IL37,000 people
- St. Clair County, IL253,694 people
- Madison County, IL264,238 people
- Jefferson County, IL36,550 people
- Fayette County, IL21,315 people
- Perry County, IL20,639 people
Questions
How fast is Clinton County, IL growing?
Population estimates put Clinton County at 37,128 people in 2025, up 0.6% since 2020, slower than the U.S. (+3.1%). It has 14,570 households. Against the 2015–2019 survey, median household income rose 29.9%, before inflation.
How much do households in Clinton County, IL spend?
Households in Clinton County spend about $212.1M a year on rent and homeowner costs, $91.2M on groceries and $60.1M on food away from home. Relative to the U.S., household spending in Clinton County runs highest on vehicle maintenance and repairs (an index of 128, where 100 is the U.S. average) and lowest on child care and other personal services (76).
Which business types have the highest market scores in Clinton County, IL?
Of the business types scored in Clinton County, spas and skin care studios (78); primary care and pediatric clinics (77); and salons, barbers and spas (75) have the highest Groundwork market scores. For spas and skin care studios, that ranks #84 of 1,769 scored counties.
How does Clinton County, IL compare with the U.S.?
Median household income in Clinton County is $86,588, 7% above the U.S. median of $80,734. The population rose 0.6% from 2020 to 2025, against +3.1% for the U.S. The median home value is $192,400, against $332,700 for the U.S. Against the U.S., map listings per household run highest for landscaping and lawn care companies (2.4 times the U.S. rate) and lowest for real estate businesses (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. 41 of the 56 business types have a score in Clinton 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 Clinton 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 Clinton 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 Clinton 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.