Health care · County · Missouri
Urgent care and walk-in clinics in St. Charles County, MO
Competitor counts, household spending and official business counts for urgent care and walk-in clinics in St. Charles County, MO, set against other counties and the U.S.
Groundwork market score · out of 100
Score 88 out of 100: High
Ranked #2 of 325 scored counties
#1 of 7 scored counties in Missouri
- Listings
- 6
- 1 chain location (17%)
- Official establishments
- 7
- Businesses with payroll, 2023
- Household spending a year
- $267.1M
- On medical and dental services · $1,656 a household
- Spending per listing
- $44.5M
- 81% above the U.S.
- Listings per 10k households
- 0.4
- 20% below the U.S.
- Population, 2025
- 426,499
- +4.9% since 2020
See the urgent care and walk-in clinics around any address in St. Charles County
The site report maps the urgent care and walk-in clinics 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
St. Charles County scores 88 (high) on the Groundwork market score for urgent care and walk-in clinics, ranking #2 of 325 scored counties and #1 of 7 scored counties in Missouri. That puts it in the top 10% of counties for urgent care and walk-in clinics.
As of September 2026, map listings count 6 urgent care and walk-in clinics in St. Charles County. One of them (17%) is a chain location, against 24% across the U.S. Per 10,000 households, that is 0.4, 20% below the U.S. rate of 0.5.
At $1,656 per household (29% above the U.S. average), households in St. Charles County spend about $267.1M a year on medical and dental services. That is about $44.5M of household spending for each clinic on map listings, 81% above the U.S. figure of $24.5M. That spending covers all medical and dental services, which urgent care and walk-in clinics share with other businesses in the trade.
The official count of businesses with payroll classed as freestanding emergency and urgent care centers in St. Charles County was 7 in 2023. That is one for every 23,044 households, against one for every 12,867 across the U.S. Population estimates put the population change in St. Charles County from 2020 to 2025 at +4.9%, faster than the U.S. (+3.1%).
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 urgent care and walk-in clinics 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 | 0.4 | 0.5 | 0.5 |
| Spending per listing | $44.5M | $29.5M | $24.5M |
| Households per official establishment | 23,044 | 15,875 | 12,867 |
| Official establishment growth, 2019–2023 | n/a | +21.5% | +32.0% |
| 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 | 88 | 61 |
Official counts and lending
Businesses
- Official establishments, 2019 to 2023
- 4 → 7
- Employees, 2023
- 87
- Annual payroll, 2023
- $3.9M
- One-person businesses, 2023
- Not publishedNot published for this business type
- Map listings, September 2026
- 61 chain location
- Listings at the U.S. rate for this spending
- 11The 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 freestanding emergency 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 urgent care and walk-in clinics 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 cardUrgent care and walk-in clinics across Missouri
Every Missouri market ranked →The highest-scoring counties in Missouri for urgent care and walk-in clinics, 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 |
|---|---|---|---|---|---|---|
| 1St. Charles County, MO | 88 | 6 | 0.4 | $44.5M | +4.9% | #2 of 325 |
| 2Jackson County, MO | 63 | 16 | 0.5 | $26.3M | +2.1% | #78 of 325 |
| 3St. Louis County, MO | 56 | 25 | 0.6 | $25.5M | −1.2% | #127 of 325 |
| 4Clay County, MO | 56 | 7 | 0.7 | $22M | +4.3% | #130 of 325 |
| 5St. Louis city, MO | 55 | 5 | 0.3 | $37M | −7.4% | #132 of 325 |
| 6Greene County, MO | 28 | 16 | 1.2 | $10.6M | +3.3% | #286 of 325 |
| 7Cole County, MO | 26 | 7 | 2.3 | $6.2M | +1.7% | #298 of 325 |
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 urgent care and walk-in clinics are in St. Charles County, MO?
St. Charles County has 6 urgent care and walk-in clinics on map listings as of September 2026. One of them (17%) is a chain location. The listings count urgent care and walk-in clinics. Official counts show 7 businesses with payroll classed as freestanding emergency and urgent care centers in 2023.
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 6 urgent care and walk-in clinics on map listings, it comes to $44.5M per clinic. The spending figure covers all medical and dental services, not only urgent care and walk-in clinics. 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 urgent care and walk-in clinics?
St. Charles County has 0.4 urgent care and walk-in clinics per 10,000 households, 20% below the U.S. rate of 0.5. Spending per clinic is $44.5M, 81% above the U.S. figure of $24.5M. At the national ratio of urgent care and walk-in clinics to household spending, St. Charles County would have about 11, against 6 on map listings. There is one business with payroll in the industry for every 23,044 households, against one for every 12,867 across 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 88 for urgent care and walk-in clinics (high), #2 of 325 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 urgent care and walk-in clinics 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 urgent care and walk-in clinics · 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.