Health care · County · New York
Medical and dental practices in Nassau County, NY
The medical and dental practices in Nassau County, NY, the household spending behind them and how the market ranks against other counties.
Groundwork market score · out of 100
Score 29 out of 100: Lower middle
Ranked #2,134 of 2,394 scored counties
#58 of 61 scored counties in New York
- Listings
- 7,122
- 476 chain locations (7%)
- Official establishments
- 3,537
- −6.5% since 2019
- Household spending a year
- $739.1M
- On medical and dental services · $1,613 a household
- Spending per listing
- $104K
- 32% below the U.S.
- Listings per 10k households
- 155.4
- 84% above the U.S.
- Population, 2025
- 1,398,939
- +0.6% since 2020
See the medical and dental practices around any address in Nassau 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 Nassau 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
Nassau County scores 29 (lower middle) on the Groundwork market score for medical and dental practices, ranking #2,134 of 2,394 scored counties and #58 of 61 scored counties in New York. That puts it in the bottom quarter of counties.
Household spending on medical and dental services in Nassau County comes to about $739.1M a year: $1,613 per household, 25% above the U.S. average. Spread across 7,122 medical and dental practices, that is $104K per practice, 32% below the U.S. figure of $152K.
There are 7,122 medical and dental practices on map listings in Nassau County as of September 2026. Chain locations make up 7% of them, against 11% across the U.S. That is 155.4 per 10,000 households, 84% above the U.S. rate of 84.5.
In 2023, official counts showed 3,537 businesses with payroll in Nassau County classed as offices of physicians, dentists, chiropractors, optometrists and therapists, and urgent care centers, down 6.5% from 2019. That is one for every 130 households, against one for every 270 across the U.S. Since fiscal 2022, 44 SBA-backed loans worth $34.3M have gone to businesses classed as offices of physicians, dentists, chiropractors, optometrists and therapists, and urgent care centers in Nassau County. Population estimates put the population change in Nassau County from 2020 to 2025 at +0.6%, slower than the U.S. (+3.1%).
How Nassau County compares
The same measures for New York 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 | Nassau County | New York | U.S. |
|---|---|---|---|
| Listings per 10k households | 155.4 | 81.5 | 84.5 |
| Spending per listing | $104K | $157K | $152K |
| Households per official establishment | 130 | 270 | 270 |
| Official establishment growth, 2019–2023 | −6.5% | −5.7% | +1.5% |
| Population growth, 2020–2025 | +0.6% | −0.6% | +3.1% |
| Spending per household on medical and dental services | $1,613 | $1,278 | $1,288 |
| Median household income | $146,202 | $85,974 | $80,734 |
| Groundwork market score | 29 | 37 |
Official counts and lending
Businesses
- Official establishments, 2019 to 2023
- 3,784 → 3,537−6.5% over the period
- Employees, 2023
- 29,551
- Annual payroll, 2023
- $2.2B
- One-person businesses, 2023
- 3,222Businesses with no payroll
- Map listings, September 2026
- 7,122476 chain locations
- Listings at the U.S. rate for this spending
- 4,846The U.S. ratio of listings to household spending, applied here
SBA-backed loans since fiscal 2022
- Loans
- 44
- Amount
- $34.3M
SBA-backed loans to businesses classed as offices of physicians, dentists, chiropractors, optometrists and therapists, and urgent care centers in Nassau 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 Nassau County
- Population, 2025 estimate
- 1,398,939+0.6% since 2020
- Households
- 458,166
- Median age
- 42.4
- Homes lived in by their owners
- 82%
- Vehicles per household
- 1.9
- Land area
- 285 sq. mi.
- People per square mile
- 4,884
- Median household income
- $146,202+25.9% vs. 2015–2019, before inflation
- Average household income
- $191,703
- Median home value
- $684,700
- Jobs located here
- 639,475
- Daytime population
- 1,328,680Residents who don’t work, plus everyone whose job is here
Looking at a specific site in Nassau 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 Nassau 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 New York
Every New York market ranked →The highest-scoring counties in New York for medical and dental practices, numbered among those based in New York, with Nassau County marked.
Top counties in New York
| Market | Score | Listings | Per 10k households | Spending per listing | Population growth | U.S. rank |
|---|---|---|---|---|---|---|
| 1Schoharie County, NY | 72 | 41 | 31.9 | $353K | +1.4% | #282 of 2,394 |
| 2Yates County, NY | 69 | 29 | 30.6 | $373K | −0.8% | #365 of 2,394 |
| 3Lewis County, NY | 68 | 26 | 23.4 | $457K | −0.3% | #390 of 2,394 |
| 4Washington County, NY | 67 | 55 | 22.5 | $494K | −2.9% | #429 of 2,394 |
| 5Orleans County, NY | 67 | 43 | 26.5 | $405K | −0.5% | #433 of 2,394 |
| 6Delaware County, NY | 67 | 57 | 29.7 | $364K | +0.2% | #438 of 2,394 |
| 7Sullivan County, NY | 65 | 141 | 44.9 | $262K | +2.7% | #543 of 2,394 |
| 8Herkimer County, NY | 64 | 62 | 24.1 | $449K | −1.4% | #559 of 2,394 |
| 9Allegany County, NY | 64 | 60 | 33.9 | $306K | +0.9% | #569 of 2,394 |
| 10Essex County, NY | 62 | 51 | 31.2 | $365K | −2.2% | #643 of 2,394 |
| 58Nassau County, NY | 29 | 7,122 | 155.4 | $104K | +0.6% | #2,134 of 2,394 |
Other business types in Nassau 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 clinics29
- Dentists and orthodontists28
- Primary care and pediatrics37
- Urgent care and walk-in clinics59
- Chiropractors50
- Physical therapy31
- Optometrists and eye care40
Child care
Clothing and laundry
Home services
Real estate
Funeral services
Questions
How many medical and dental practices are in Nassau County, NY?
As of September 2026, map listings count 7,122 medical and dental practices in Nassau County. 476 of them (7%) are chain locations. The listings count every outpatient clinic and practice, and urgent care. Official counts show 3,537 businesses with payroll classed as offices of physicians, dentists, chiropractors, optometrists and therapists, and urgent care centers in 2023, down 6.5% from 2019. Another 3,222 one-person businesses have no payroll, by official counts.
How much do households in Nassau County, NY spend on medical and dental services?
About $739.1M a year, or $1,613 per household. That is 25% above the U.S. average (an index of 125, where 100 is the U.S. average). Spread across the 7,122 medical and dental practices on map listings, it comes to $104K per practice. It is estimated from the incomes of the 458,166 households in Nassau County and national spending patterns by income.
How does Nassau County, NY compare with the U.S. for medical and dental practices?
Nassau County has 155.4 medical and dental practices per 10,000 households, 84% above the U.S. rate of 84.5. Spending per practice is $104K, 32% below the U.S. figure of $152K. At the U.S. ratio of medical and dental practices to household spending, Nassau County would have about 4,846, against 7,122 on map listings. There is one business with payroll in the industry for every 130 households, against one for every 270 across the U.S. The official count fell 6.5% from 2019 to 2023, against +1.5% for the U.S.
How fast is Nassau County, NY growing?
Population estimates put Nassau County at 1,398,939 people in 2025, up 0.6% since 2020, slower than the U.S. (+3.1%). It has 458,166 households. The median household income in Nassau County is $146,202 a year, 81% above the U.S. median of $80,734. That rose 25.9% 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. Nassau County scores 29 for medical and dental practices (lower middle), #2,134 of 2,394 scored counties.
How can I see the market around a specific site?
Run a Groundwork site report on an address in Nassau 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 Nassau County
Screening a site or an acquisition in Nassau 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 Nassau 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.