Health care · County · Washington
Physical therapy clinics in King County, WA
The physical therapy clinics in King County, WA, the household spending behind them and how the market ranks against other counties.
Groundwork market score · out of 100
Score 59 out of 100: Upper middle
Ranked #478 of 1,422 scored counties
#14 of 26 scored counties in Washington
- Listings
- 589
- 111 chain locations (19%)
- Official establishments
- 467
- +35.8% since 2019
- Household spending a year
- $1.5B
- On medical and dental services · $1,632 a household
- Spending per listing
- $2.6M
- 9% above the U.S.
- Listings per 10k households
- 6.3
- 17% above the U.S.
- Population, 2025
- 2,344,939
- +3.1% since 2020
See the physical therapy clinics around any address in King County
The site report maps the physical therapy 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 King 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
At $1,632 per household (27% above the U.S. average), households in King County spend about $1.5B a year on medical and dental services. That works out to $2.6M per clinic, 9% above the U.S. figure of $2.4M. The spending figure covers all medical and dental services, not only physical therapy clinics.
King County has 589 physical therapy clinics on map listings as of September 2026. Chain locations make up 19% of them, against 23% across the U.S. Per 10,000 households, that is 6.3, 17% above the U.S. rate of 5.4.
The official count of businesses with payroll classed as physical, occupational and speech therapists in King County was 467 in 2023, up 35.8% from 2019. That is one for every 2,015 households, against one for every 2,482 across the U.S. Since fiscal 2022, 21 SBA-backed loans worth $7.5M have gone to businesses classed as physical, occupational and speech therapists in King County.
Population estimates show King County grew 3.1% from 2020 to 2025, in step with the U.S. (+3.1%). For physical therapy clinics, King County has a Groundwork market score of 59 (upper middle): #478 of 1,422 scored counties and #14 of 26 scored counties in Washington.
How King County compares
The same measures for Washington and the whole U.S. Spending per listing divides a year of household spending on all medical and dental services by the physical therapy 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 | King County | Washington | U.S. |
|---|---|---|---|
| Listings per 10k households | 6.3 | 5.6 | 5.4 |
| Spending per listing | $2.6M | $2.6M | $2.4M |
| Households per official establishment | 2,015 | 2,345 | 2,482 |
| Official establishment growth, 2019–2023 | +35.8% | +22.7% | +23.1% |
| Population growth, 2020–2025 | +3.1% | +3.6% | +3.1% |
| Spending per household on medical and dental services | $1,632 | $1,446 | $1,288 |
| Median household income | $124,746 | $98,141 | $80,734 |
| Groundwork market score | 59 | 67 |
Official counts and lending
Businesses
- Official establishments, 2019 to 2023
- 344 → 467+35.8% over the period
- Employees, 2023
- 3,144
- Annual payroll, 2023
- $175.5M
- One-person businesses, 2023
- Not publishedNot published for this business type
- Map listings, September 2026
- 589111 chain locations
- Listings at the U.S. rate for this spending
- 639The U.S. ratio of listings to household spending, applied here
SBA-backed loans since fiscal 2022
- Loans
- 21
- Amount
- $7.5M
SBA-backed loans to businesses classed as physical, occupational and speech therapists in King 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 King County
- Population, 2025 estimate
- 2,344,939+3.1% since 2020
- Households
- 941,054
- Median age
- 38.8
- Homes lived in by their owners
- 55%
- Vehicles per household
- 1.6
- Land area
- 2,116 sq. mi.
- People per square mile
- 1,081
- Median household income
- $124,746+31.4% vs. 2015–2019, before inflation
- Average household income
- $176,807
- Median home value
- $859,900
- Jobs located here
- 1,503,962
- Daytime population
- 2,645,877Residents who don’t work, plus everyone whose job is here
Looking at a specific site in King 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 physical therapy clinics on map listings by name and distance.
Or open the report at the center of King County. Signed out, you see a blurred preview; on an account, each report is one action.
Free10 actions over 3 days, no cardPhysical therapy across Washington
Every Washington market ranked →The highest-scoring counties in Washington for physical therapy clinics, numbered among those based in Washington, with King County marked.
Top counties in Washington
| Market | Score | Listings | Per 10k households | Spending per listing | Population growth | U.S. rank |
|---|---|---|---|---|---|---|
| 1Mason County, WA | 90 | 6 | 2.3 | $5.6M | +7.8% | #6 of 1,422 |
| 2Franklin County, WA | 81 | 11 | 3.7 | $3.6M | +5.6% | #47 of 1,422 |
| 3Grant County, WA | 79 | 11 | 3.1 | $3.9M | +6.3% | #73 of 1,422 |
| 4Cowlitz County, WA | 79 | 14 | 3.2 | $3.9M | +3.5% | #74 of 1,422 |
| 5Clark County, WA | 77 | 83 | 4.2 | $3.3M | +5.3% | #108 of 1,422 |
| 6Clallam County, WA | 71 | 12 | 3.4 | $3.6M | +1.1% | #199 of 1,422 |
| 7Snohomish County, WA | 69 | 165 | 5.2 | $2.9M | +4.9% | #247 of 1,422 |
| 8Jefferson County, WA | 68 | 7 | 4.3 | $2.9M | +2.7% | #261 of 1,422 |
| 9Lewis County, WA | 67 | 14 | 4.3 | $2.9M | +6.7% | #285 of 1,422 |
| 10Whitman County, WA | 65 | 5 | 2.7 | $4.3M | +1.5% | #318 of 1,422 |
| 14King County, WA | 59 | 589 | 6.3 | $2.6M | +3.1% | #478 of 1,422 |
Other business types in King 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 physical therapy clinics are in King County, WA?
Map listings as of September 2026 show 589 physical therapy clinics in King County. 111 of them (19%) are chain locations. The listings count physical therapy and rehabilitation clinics. Official counts show 467 businesses with payroll classed as physical, occupational and speech therapists in 2023, up 35.8% from 2019.
How much do households in King County, WA spend on medical and dental services?
About $1.5B a year, or $1,632 per household. That is 27% above the U.S. average (an index of 127, where 100 is the U.S. average). Spread across the 589 physical therapy clinics on map listings, it comes to $2.6M per clinic. That spending covers all medical and dental services, which physical therapy clinics share with other businesses in the trade. It is estimated from the incomes of the 941,054 households in King County and national spending patterns by income.
How does King County, WA compare with the U.S. for physical therapy clinics?
King County has 6.3 physical therapy clinics per 10,000 households, 17% above the U.S. rate of 5.4. Spending per clinic is $2.6M, 9% above the U.S. figure of $2.4M. At the U.S. ratio of physical therapy clinics to household spending, King County would have about 639, against 589 on map listings. There is one business with payroll in the industry for every 2,015 households, against one for every 2,482 across the U.S. The official count rose 35.8% from 2019 to 2023, against +23.1% for the U.S.
How fast is King County, WA growing?
Population estimates put King County at 2,344,939 people in 2025, up 3.1% since 2020, in step with the U.S. (+3.1%). It has 941,054 households. Median household income in King County is $124,746, 55% above the U.S. median of $80,734. Against the 2015–2019 survey, the median rose 31.4%, 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. King County scores 59 for physical therapy clinics (upper middle), #478 of 1,422 scored counties.
How can I see the market around a specific site?
Run a Groundwork site report on an address in King County. It maps the physical therapy 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 physical therapy clinics · All 56 business types in King County
Screening a site or an acquisition in King 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 King 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.