Health care · County · Illinois
Medical and dental practices in Mercer County, IL
The medical and dental practices in Mercer County, IL, the household spending behind them and how the market ranks against other counties.
Groundwork market score · out of 100
Score 74 out of 100: Upper middle
Ranked #227 of 2,394 scored counties
#7 of 87 scored counties in Illinois
- Listings
- 21
- 3 chain locations (14%)
- Official establishments
- 6
- Businesses with payroll, 2023
- Household spending a year
- $9.2M
- On medical and dental services · $1,396 a household
- Spending per listing
- $436K
- 2.9 times the U.S.
- Listings per 10k households
- 32.0
- 62% below the U.S.
- Population, 2025
- 15,229
- −2.6% since 2020
See the medical and dental practices around any address in Mercer County
The site report maps the medical and dental practices on map listings near the address, by name and distance, and sizes the households and spending around it. Or open the report at the center of Mercer 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
The Groundwork market score for medical and dental practices in Mercer County is 74 (upper middle), #227 of 2,394 scored counties and #7 of 87 scored counties in Illinois. That puts it in the top 10% of counties for medical and dental practices.
Households in Mercer County spend about $9.2M a year on medical and dental services, or $1,396 per household, 8% above the U.S. average. That is about $436K of household spending for each practice on map listings, 2.9 times the U.S. figure of $152K.
Mercer County has 21 medical and dental practices on map listings as of September 2026. Of those, 3 are chain locations, or 14%, against 11% across the U.S. That comes to 32.0 for every 10,000 households, 62% below the U.S. rate of 84.5.
The official count of businesses with payroll classed as offices of physicians, dentists, chiropractors, optometrists and therapists, and urgent care centers in Mercer County was 6 in 2023. That is one for every 1,094 households, against one for every 270 across the U.S. Population estimates put the population change in Mercer County from 2020 to 2025 at −2.6%, against +3.1% for the U.S.
How Mercer County compares
The same measures for Illinois and the whole U.S. Spending per listing divides a year of household spending on all medical and dental services by the medical and dental practices counted, so it measures the demand for each competitor, not any business’s revenue. Households per establishment does the same with the official count.
| Measure | Mercer County | Illinois | U.S. |
|---|---|---|---|
| Listings per 10k households | 32.0 | 102.3 | 84.5 |
| Spending per listing | $436K | $148K | $152K |
| Households per official establishment | 1,094 | 269 | 270 |
| Official establishment growth, 2019–2023 | n/a | +0.1% | +1.5% |
| Population growth, 2020–2025 | −2.6% | −0.6% | +3.1% |
| Spending per household on medical and dental services | $1,396 | $1,517 | $1,288 |
| Median household income | $74,182 | $83,390 | $80,734 |
| Groundwork market score | 74 | 43 |
Official counts and lending
Businesses
- Official establishments, 2019 to 2023
- 3 → 6
- Employees, 2023
- 18
- Annual payroll, 2023
- $1.1M
- One-person businesses, 2023
- 3Businesses with no payroll
- Map listings, September 2026
- 213 chain locations
- Listings at the U.S. rate for this spending
- 60The U.S. ratio of listings to household spending, applied here
SBA-backed loans since fiscal 2022
- Loans
- 0
- Amount
- $0
SBA-backed loans to businesses classed as offices of physicians, dentists, chiropractors, optometrists and therapists, and urgent care centers in Mercer County, through June 2026, placed by the borrower’s ZIP code. Official establishments are businesses with payroll; the official counts leave out places with fewer than 3.
Population and households in Mercer County
- Population, 2025 estimate
- 15,229−2.6% since 2020
- Households
- 6,565
- Median age
- 43.9
- Homes lived in by their owners
- 84%
- Vehicles per household
- 2.2
- Land area
- 561 sq. mi.
- People per square mile
- 28
- Median household income
- $74,182+24.1% vs. 2015–2019, before inflation
- Average household income
- $92,846
- Median home value
- $146,700
- Jobs located here
- 3,052
- Daytime population
- 11,354Residents who don’t work, plus everyone whose job is here
Looking at a specific site in Mercer 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 medical and dental practices on map listings by name and distance.
Or open the report at the center of Mercer County. Signed out, you see a blurred preview; on an account, each report is one action.
Free10 actions over 3 days, no cardDoctors, dentists and clinics across Illinois
Every Illinois market ranked →The highest-scoring counties in Illinois for medical and dental practices, numbered among those based in Illinois, with Mercer County marked.
Top counties in Illinois
| Market | Score | Listings | Per 10k households | Spending per listing | Population growth | U.S. rank |
|---|---|---|---|---|---|---|
| 1Piatt County, IL | 84 | 24 | 34.7 | $441K | +0.6% | #51 of 2,394 |
| 2Cumberland County, IL | 76 | 8 | 19.2 | $700K | −2.1% | #162 of 2,394 |
| 3Kendall County, IL | 76 | 285 | 62.8 | $270K | +9.9% | #184 of 2,394 |
| 4Crawford County, IL | 75 | 32 | 42.7 | $317K | +0.1% | #213 of 2,394 |
| 5Woodford County, IL | 75 | 75 | 51.1 | $304K | −0.8% | #215 of 2,394 |
| 6Johnson County, IL | 74 | 6 | 14.6 | $876K | +0.4% | #220 of 2,394 |
| 7Mercer County, IL | 74 | 21 | 32.0 | $436K | −2.6% | #227 of 2,394 |
| 8Washington County, IL | 74 | 21 | 36.2 | $383K | −1.2% | #229 of 2,394 |
| 9Carroll County, IL | 73 | 20 | 30.4 | $419K | −1.7% | #250 of 2,394 |
| 10Hancock County, IL | 72 | 16 | 21.0 | $618K | −4.4% | #270 of 2,394 |
Other business types in Mercer County
Each with its Groundwork market score here, out of 100, where it has one.
Food and drink
Groceries and convenience
Auto
Beauty and personal care
Fitness and classes
Health care
Child care
Clothing and laundry
Home services
Real estate
Funeral services
Questions
How many medical and dental practices are in Mercer County, IL?
Map listings as of September 2026 show 21 medical and dental practices in Mercer County. 3 of them (14%) are chain locations. The listings count every outpatient clinic and practice, and urgent care. Official counts show 6 businesses with payroll classed as offices of physicians, dentists, chiropractors, optometrists and therapists, and urgent care centers in 2023. Official counts list 3 one-person businesses without payroll.
How much do households in Mercer County, IL spend on medical and dental services?
About $9.2M a year, or $1,396 per household. That is 8% above the U.S. average (an index of 108, where 100 is the U.S. average). Spread across the 21 medical and dental practices on map listings, it comes to $436K per practice. It is estimated from the incomes of the 6,565 households in Mercer County and national spending patterns by income.
How does Mercer County, IL compare with the U.S. for medical and dental practices?
Mercer County has 32.0 medical and dental practices per 10,000 households, 62% below the U.S. rate of 84.5. Spending per practice is $436K, 2.9 times the U.S. figure of $152K. At the U.S. ratio of medical and dental practices to household spending, Mercer County would have about 60, against 21 on map listings. There is one business with payroll in the industry for every 1,094 households, against one for every 270 across the U.S.
How fast is Mercer County, IL growing?
Population estimates put Mercer County at 15,229 people in 2025, down 2.6% since 2020, against +3.1% for the U.S. It has 6,565 households. The median household income in Mercer County is $74,182 a year, 8% below the U.S. median of $80,734. That rose 24.1% from the 2015–2019 survey, before inflation.
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. Mercer County scores 74 for medical and dental practices (upper middle), #227 of 2,394 scored counties.
How can I see the market around a specific site?
Run a Groundwork site report on an address in Mercer County. It maps the medical and dental practices 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.
How the score works · Top markets for medical and dental practices · All 56 business types in Mercer County
Screening a site or an acquisition in Mercer 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 Mercer 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.