Health care · County · Washington
Dentists and orthodontists in King County, WA
Competitor counts, household spending and official business counts for dentists and orthodontists in King County, WA, set against other counties and the U.S.
Groundwork market score · out of 100
Score 39 out of 100: Lower middle
Ranked #1,337 of 1,886 scored counties
#29 of 32 scored counties in Washington
- Listings
- 1,778
- 133 chain locations (7%)
- Official establishments
- 1,434
- −1.5% since 2019
- Household spending a year
- $1.5B
- On medical and dental services · $1,632 a household
- Spending per listing
- $864K
- 12% below the U.S.
- Listings per 10k households
- 18.9
- 44% above the U.S.
- Population, 2025
- 2,344,939
- +3.1% since 2020
See the dentists and orthodontists around any address in King County
The site report maps the dentists and orthodontists 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
Household spending on medical and dental services in King County comes to about $1.5B a year: $1,632 per household, 27% above the U.S. average. That is about $864K of household spending for each practice on map listings, 12% below the U.S. figure of $984K. The spending figure covers all medical and dental services, not only dentists and orthodontists.
King County has 1,778 dentists and orthodontists on map listings as of September 2026. Chain locations make up 7% of them, against 12% across the U.S. Per 10,000 households, that is 18.9, 44% above the U.S. rate of 13.1.
The official count of businesses with payroll classed as offices of dentists in King County was 1,434 in 2023, down 1.5% from 2019. That is one for every 656 households, against one for every 952 across the U.S. Since fiscal 2022, 26 SBA-backed loans worth $16.9M have gone to businesses classed as offices of dentists in King County.
Between 2020 and 2025, the population of King County grew 3.1%, in step with the U.S. (+3.1%). For dentists and orthodontists, King County has a Groundwork market score of 39 (lower middle): #1,337 of 1,886 scored counties and #29 of 32 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 dentists and orthodontists 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 | 18.9 | 14.9 | 13.1 |
| Spending per listing | $864K | $971K | $984K |
| Households per official establishment | 656 | 844 | 952 |
| Official establishment growth, 2019–2023 | −1.5% | −0.5% | −0.5% |
| 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 | 39 | 47 |
Official counts and lending
Businesses
- Official establishments, 2019 to 2023
- 1,456 → 1,434−1.5% over the period
- Employees, 2023
- 11,673
- Annual payroll, 2023
- $723.9M
- One-person businesses, 2023
- Not publishedNot published for this business type
- Map listings, September 2026
- 1,778133 chain locations
- Listings at the U.S. rate for this spending
- 1,562The U.S. ratio of listings to household spending, applied here
SBA-backed loans since fiscal 2022
- Loans
- 26
- Amount
- $16.9M
SBA-backed loans to businesses classed as offices of dentists 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 dentists and orthodontists 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 cardDentists and orthodontists across Washington
Every Washington market ranked →The highest-scoring counties in Washington for dentists and orthodontists, 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 | 81 | 17 | 6.5 | $2M | +7.8% | #61 of 1,886 |
| 2Klickitat County, WA | 79 | 6 | 6.1 | $2M | +6.6% | #85 of 1,886 |
| 3Pacific County, WA | 78 | 7 | 6.4 | $1.8M | +3.6% | #103 of 1,886 |
| 4Stevens County, WA | 74 | 16 | 8.3 | $1.5M | +6.6% | #185 of 1,886 |
| 5Grant County, WA | 72 | 26 | 7.3 | $1.7M | +6.3% | #219 of 1,886 |
| 6Douglas County, WA | 71 | 13 | 8.2 | $1.6M | +8.0% | #246 of 1,886 |
| 7Jefferson County, WA | 70 | 10 | 6.1 | $2.1M | +2.7% | #258 of 1,886 |
| 8Franklin County, WA | 70 | 23 | 7.7 | $1.7M | +5.6% | #267 of 1,886 |
| 9San Juan County, WA | 69 | 6 | 6.7 | $2M | +4.2% | #280 of 1,886 |
| 10Island County, WA | 62 | 27 | 7.5 | $1.8M | −1.5% | #498 of 1,886 |
| 29King County, WA | 39 | 1,778 | 18.9 | $864K | +3.1% | #1,337 of 1,886 |
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
- Doctors, dentists and clinics45
- Dentists and orthodontists39
- Primary care and pediatrics71
- Urgent care and walk-in clinics80
- Chiropractors56
- Physical therapy59
- Optometrists and eye care65
Child care
Clothing and laundry
Home services
Real estate
Funeral services
Questions
How many dentists and orthodontists are in King County, WA?
Map listings as of September 2026 show 1,778 dentists and orthodontists in King County. 133 of them (7%) are chain locations. The listings count dental practices, orthodontists included. Official counts show 1,434 businesses with payroll classed as offices of dentists in 2023, down 1.5% 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 1,778 dentists and orthodontists on map listings, it comes to $864K per practice. That spending covers all medical and dental services, which dentists and orthodontists 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 dentists and orthodontists?
King County has 18.9 dentists and orthodontists per 10,000 households, 44% above the U.S. rate of 13.1. Spending per practice is $864K, 12% below the U.S. figure of $984K. At the U.S. ratio of dentists and orthodontists to household spending, King County would have about 1,562, against 1,778 on map listings. There is one business with payroll in the industry for every 656 households, against one for every 952 across the U.S. The official count fell 1.5% from 2019 to 2023, against −0.5% 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 39 for dentists and orthodontists (lower middle), #1,337 of 1,886 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 dentists and orthodontists 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 dentists and orthodontists · 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.