Health care · County · New York
Dentists and orthodontists in Nassau County, NY
The dentists and orthodontists in Nassau County, NY, the household spending behind them and how the market ranks against other counties.
Groundwork market score · out of 100
Score 28 out of 100: Lower middle
Ranked #1,707 of 1,886 scored counties
#56 of 58 scored counties in New York
- Listings
- 1,158
- 74 chain locations (6%)
- Official establishments
- 958
- −7.7% since 2019
- Household spending a year
- $739.1M
- On medical and dental services · $1,613 a household
- Spending per listing
- $638K
- 35% below the U.S.
- Listings per 10k households
- 25.3
- 93% above the U.S.
- Population, 2025
- 1,398,939
- +0.6% since 2020
See the dentists and orthodontists around any address in Nassau 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 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
For dentists and orthodontists, Nassau County has a Groundwork market score of 28 (lower middle): #1,707 of 1,886 scored counties and #56 of 58 scored counties in New York. That puts it in the bottom quarter of counties.
As of September 2026, map listings count 1,158 dentists and orthodontists in Nassau County. Chain locations make up 6% of them, against 12% across the U.S. Per 10,000 households, that is 25.3, 93% above the U.S. rate of 13.1.
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. That works out to $638K per practice, 35% below the U.S. figure of $984K. That spending covers all medical and dental services, which dentists and orthodontists share with other businesses in the trade.
In 2023, official counts showed 958 businesses with payroll in Nassau County classed as offices of dentists, down 7.7% from 2019. That is one for every 478 households, against one for every 952 across the U.S. Since fiscal 2022, 17 SBA-backed loans worth $18.7M have gone to businesses classed as offices of dentists in Nassau County. Population estimates show Nassau County grew 0.6% from 2020 to 2025, 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 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 | Nassau County | New York | U.S. |
|---|---|---|---|
| Listings per 10k households | 25.3 | 12.8 | 13.1 |
| Spending per listing | $638K | $995K | $984K |
| Households per official establishment | 478 | 963 | 952 |
| Official establishment growth, 2019–2023 | −7.7% | −7.7% | −0.5% |
| 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 | 28 | 35 |
Official counts and lending
Businesses
- Official establishments, 2019 to 2023
- 1,038 → 958−7.7% over the period
- Employees, 2023
- 6,120
- Annual payroll, 2023
- $376.2M
- One-person businesses, 2023
- Not publishedNot published for this business type
- Map listings, September 2026
- 1,15874 chain locations
- Listings at the U.S. rate for this spending
- 751The U.S. ratio of listings to household spending, applied here
SBA-backed loans since fiscal 2022
- Loans
- 17
- Amount
- $18.7M
SBA-backed loans to businesses classed as offices of dentists 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 dentists and orthodontists 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 cardDentists and orthodontists across New York
Every New York market ranked →The highest-scoring counties in New York for dentists and orthodontists, 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 |
|---|---|---|---|---|---|---|
| 1Sullivan County, NY | 74 | 19 | 6.0 | $1.9M | +2.7% | #175 of 1,886 |
| 2Delaware County, NY | 73 | 6 | 3.1 | $3.5M | +0.2% | #187 of 1,886 |
| 3Schoharie County, NY | 73 | 7 | 5.4 | $2.1M | +1.4% | #195 of 1,886 |
| 4Allegany County, NY | 72 | 7 | 4.0 | $2.6M | +0.9% | #209 of 1,886 |
| 5Washington County, NY | 69 | 8 | 3.3 | $3.4M | −2.9% | #275 of 1,886 |
| 6Herkimer County, NY | 67 | 10 | 3.9 | $2.8M | −1.4% | #325 of 1,886 |
| 7Tioga County, NY | 67 | 12 | 5.9 | $1.9M | −1.9% | #333 of 1,886 |
| 8Genesee County, NY | 67 | 15 | 6.0 | $1.9M | +0.2% | #335 of 1,886 |
| 9Greene County, NY | 66 | 13 | 7.0 | $1.7M | −1.1% | #378 of 1,886 |
| 10Orleans County, NY | 65 | 9 | 5.5 | $1.9M | −0.5% | #400 of 1,886 |
| 56Nassau County, NY | 28 | 1,158 | 25.3 | $638K | +0.6% | #1,707 of 1,886 |
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 dentists and orthodontists are in Nassau County, NY?
Nassau County has 1,158 dentists and orthodontists on map listings as of September 2026. 74 of them (6%) are chain locations. The listings count dental practices, orthodontists included. Official counts show 958 businesses with payroll classed as offices of dentists in 2023, down 7.7% from 2019.
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 1,158 dentists and orthodontists on map listings, it comes to $638K per practice. The spending figure covers all medical and dental services, not only dentists and orthodontists. 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 dentists and orthodontists?
Nassau County has 25.3 dentists and orthodontists per 10,000 households, 93% above the U.S. rate of 13.1. Spending per practice is $638K, 35% below the U.S. figure of $984K. At the national ratio of dentists and orthodontists to household spending, Nassau County would have about 751, against 1,158 on map listings. There is one business with payroll in the industry for every 478 households, against one for every 952 across the U.S. The official count fell 7.7% from 2019 to 2023, against −0.5% 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 28 for dentists and orthodontists (lower middle), #1,707 of 1,886 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 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 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.