Health care · County · Missouri
Medical and dental practices in St. Charles County, MO
How St. Charles County, MO compares with other counties and the U.S. for medical and dental practices: competitors, household spending, official counts and growth.
Groundwork market score · out of 100
Score 61 out of 100: Upper middle
Ranked #712 of 2,394 scored counties
#49 of 85 scored counties in Missouri
- Listings
- 1,163
- 229 chain locations (20%)
- Official establishments
- 563
- +10.6% since 2019
- Household spending a year
- $267.1M
- On medical and dental services · $1,656 a household
- Spending per listing
- $230K
- 51% above the U.S.
- Listings per 10k households
- 72.1
- 15% below the U.S.
- Population, 2025
- 426,499
- +4.9% since 2020
See the medical and dental practices around any address in St. Charles 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 St. Charles 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
Household spending on medical and dental services in St. Charles County comes to about $267.1M a year: $1,656 per household, 29% above the U.S. average. That works out to $230K per practice, 51% above the U.S. figure of $152K.
There are 1,163 medical and dental practices on map listings in St. Charles County as of September 2026. Of those, 229 are chain locations, or 20%, against 11% across the U.S. That is 72.1 per 10,000 households, 15% 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 St. Charles County was 563 in 2023, up 10.6% from 2019. That is one for every 287 households, against one for every 270 across the U.S. Another 190 one-person businesses have no payroll, by official counts. Since fiscal 2022, 4 SBA-backed loans worth $5.6M have gone to businesses classed as offices of physicians, dentists, chiropractors, optometrists and therapists, and urgent care centers in St. Charles County.
Between 2020 and 2025, the population of St. Charles County grew 4.9%, faster than the U.S. (+3.1%). The Groundwork market score for medical and dental practices in St. Charles County is 61 (upper middle), #712 of 2,394 scored counties and #49 of 85 scored counties in Missouri.
How St. Charles County compares
The same measures for Missouri 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 | St. Charles County | Missouri | U.S. |
|---|---|---|---|
| Listings per 10k households | 72.1 | 68.6 | 84.5 |
| Spending per listing | $230K | $203K | $152K |
| Households per official establishment | 287 | 328 | 270 |
| Official establishment growth, 2019–2023 | +10.6% | +1.6% | +1.5% |
| Population growth, 2020–2025 | +4.9% | +1.9% | +3.1% |
| Spending per household on medical and dental services | $1,656 | $1,389 | $1,288 |
| Median household income | $104,692 | $70,702 | $80,734 |
| Groundwork market score | 61 | 71 |
Official counts and lending
Businesses
- Official establishments, 2019 to 2023
- 509 → 563+10.6% over the period
- Employees, 2023
- 4,124
- Annual payroll, 2023
- $328.6M
- One-person businesses, 2023
- 190Businesses with no payroll
- Map listings, September 2026
- 1,163229 chain locations
- Listings at the U.S. rate for this spending
- 1,752The U.S. ratio of listings to household spending, applied here
SBA-backed loans since fiscal 2022
- Loans
- 4
- Amount
- $5.6M
SBA-backed loans to businesses classed as offices of physicians, dentists, chiropractors, optometrists and therapists, and urgent care centers in St. Charles 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 St. Charles County
- Population, 2025 estimate
- 426,499+4.9% since 2020
- Households
- 161,311
- Median age
- 40.8
- Homes lived in by their owners
- 81%
- Vehicles per household
- 2.0
- Land area
- 560 sq. mi.
- People per square mile
- 740
- Median household income
- $104,692+23.2% vs. 2015–2019, before inflation
- Average household income
- $129,305
- Median home value
- $320,800
- Jobs located here
- 167,185
- Daytime population
- 365,581Residents who don’t work, plus everyone whose job is here
Looking at a specific site in St. Charles 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 St. Charles 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 Missouri
Every Missouri market ranked →The highest-scoring counties in Missouri for medical and dental practices, numbered among those based in Missouri, with St. Charles County marked.
Top counties in Missouri
| Market | Score | Listings | Per 10k households | Spending per listing | Population growth | U.S. rank |
|---|---|---|---|---|---|---|
| 1Warren County, MO | 87 | 50 | 36.1 | $399K | +9.2% | #20 of 2,394 |
| 2Callaway County, MO | 84 | 47 | 28.5 | $476K | +3.2% | #49 of 2,394 |
| 3Osage County, MO | 84 | 19 | 35.9 | $386K | +2.7% | #53 of 2,394 |
| 4Stone County, MO | 83 | 25 | 18.5 | $695K | +4.1% | #57 of 2,394 |
| 5Texas County, MO | 83 | 23 | 24.2 | $469K | +6.9% | #59 of 2,394 |
| 6Webster County, MO | 83 | 40 | 28.6 | $462K | +10.4% | #60 of 2,394 |
| 7Morgan County, MO | 83 | 29 | 33.3 | $369K | +6.8% | #66 of 2,394 |
| 8McDonald County, MO | 82 | 20 | 23.4 | $516K | +3.1% | #72 of 2,394 |
| 9Lincoln County, MO | 82 | 94 | 41.2 | $356K | +11.4% | #79 of 2,394 |
| 10Ray County, MO | 81 | 25 | 27.4 | $498K | +1.1% | #82 of 2,394 |
| 49St. Charles County, MO | 61 | 1,163 | 72.1 | $230K | +4.9% | #712 of 2,394 |
Other business types in St. Charles 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
- Doctors, dentists and clinics61
- Dentists and orthodontists62
- Primary care and pediatrics81
- Urgent care and walk-in clinics88
- Chiropractors46
- Physical therapy67
- Optometrists and eye care70
Child care
Clothing and laundry
Home services
Real estate
Funeral services
Questions
How many medical and dental practices are in St. Charles County, MO?
As of September 2026, map listings count 1,163 medical and dental practices in St. Charles County. 229 of them (20%) are chain locations. The listings count every outpatient clinic and practice, and urgent care. Official counts show 563 businesses with payroll classed as offices of physicians, dentists, chiropractors, optometrists and therapists, and urgent care centers in 2023, up 10.6% from 2019. Official counts list 190 one-person businesses without payroll.
How much do households in St. Charles County, MO spend on medical and dental services?
About $267.1M a year, or $1,656 per household. That is 29% above the U.S. average (an index of 129, where 100 is the U.S. average). Spread across the 1,163 medical and dental practices on map listings, it comes to $230K per practice. It is estimated from the incomes of the 161,311 households in St. Charles County and national spending patterns by income.
How does St. Charles County, MO compare with the U.S. for medical and dental practices?
St. Charles County has 72.1 medical and dental practices per 10,000 households, 15% below the U.S. rate of 84.5. Spending per practice is $230K, 51% above the U.S. figure of $152K. At the U.S. ratio of medical and dental practices to household spending, St. Charles County would have about 1,752, against 1,163 on map listings. There is one business with payroll in the industry for every 287 households, against one for every 270 across the U.S. The official count rose 10.6% from 2019 to 2023, against +1.5% for the U.S.
How fast is St. Charles County, MO growing?
Population estimates put St. Charles County at 426,499 people in 2025, up 4.9% since 2020, faster than the U.S. (+3.1%). It has 161,311 households. The median household income in St. Charles County is $104,692 a year, 30% above the U.S. median of $80,734. That rose 23.2% 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. St. Charles County scores 61 for medical and dental practices (upper middle), #712 of 2,394 scored counties.
How can I see the market around a specific site?
Run a Groundwork site report on an address in St. Charles 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 St. Charles County
Screening a site or an acquisition in St. Charles 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 St. Charles 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.