County profile · New York
Nassau County, NY market data
Population, household spending and competition for 56 business types in Nassau County, each scored against other counties.
- Population, 2025
- 1,398,939
- +0.6% since 2020
- Households
- 458,166
- Median household income
- $146,202
- +25.9% vs. 2015–2019, before inflation
- Median home value
- $684,700
- Jobs located here
- 639,475
- Highest market score
- 82
- Roofing and gutters, #39 of 1,177 scored counties
A site report maps the competitors on map listings around any address in Nassau County by name and distance, and the households and spending within reach. 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
An estimated 1,398,939 people live in Nassau County, in 458,166 households. Between 2020 and 2025, the population of Nassau County grew 0.6%, slower than the U.S. (+3.1%). 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.
Set against the U.S., households in Nassau County spend the most on child care and other personal services (an index of 178, where 100 is the U.S. average) and the least on gasoline and other fuels (83).
The highest Groundwork market scores in Nassau County are for roofing and gutter companies (82), oil change and quick-lube shops (73) and funeral homes (70). Nassau County ranks #39 of 1,177 scored counties for roofing and gutter companies.
Nassau County is part of the New York-Newark-Jersey City metro area. For its number of households, Nassau County has the most map listings, relative to the U.S., for dry cleaners (2.5 times the U.S. rate) and the fewest for oil change and quick-lube shops (57% below the U.S. rate).
All 56 business types in Nassau County
Highest Groundwork market score first. Each score compares Nassau County with other counties for that business type, from 0 to 100. Spending per listing divides a whole spending line (all vehicle repairs, all eating out) by one type’s listings: the demand for each competitor, not a business’s revenue. Compare it across markets with its index, where 100 is the U.S. figure for the same type; the real estate types, whose line is all housing costs, show the index only. How the score works.
| Business type | Score | Rank among counties | Listings | Per 10k households | Spending per listing | Spending per listing vs. U.S. (100) | Official establishments |
|---|---|---|---|---|---|---|---|
| Roofing and gutters | 82 | #39 of 1,177 | 104 | 2.3 | $19.1M | 226 | 53 |
| Oil change and quick lube | 73 | #39 of 479 | 13 | 0.3 | $35.8M | 261 | 23 |
| Funeral homes | 70 | #231 of 1,472 | 91 | 2.0 | $963K | 142 | 79 |
| Veterinarians | 68 | #317 of 1,485 | 137 | 3.0 | $3.1M | 114 | 116 |
| Tire shops | 64 | #415 of 1,530 | 141 | 3.1 | $3.3M | 132 | 68 |
| Pet businesses | 64 | #498 of 2,200 | 445 | 9.7 | $958K | 109 | 254 |
| Convenience stores | 63 | #635 of 2,261 | 284 | 6.2 | $13.2M | 168 | 323 |
| Pet grooming and boarding | 62 | #421 of 1,461 | 166 | 3.6 | $2.6M | 101 | 94 |
| Urgent care and walk-in clinics | 59 | #100 of 325 | 21 | 0.5 | $35.2M | 143 | 59 |
| Grocery and convenience stores | 59 | #820 of 2,402 | 919 | 20.1 | $4.1M | 121 | 775 |
| Landscaping and lawn care | 58 | #498 of 1,493 | 197 | 4.3 | $4.1M | 139 | 985 |
| Gyms | 58 | #593 of 1,792 | 467 | 10.2 | $1.6M | 123 | 262 |
| Pizza | 58 | #704 of 2,090 | 403 | 8.8 | $6.3M | 124 | 1,430 |
| HVAC and plumbing | 57 | #596 of 1,707 | 346 | 7.6 | $5.7M | 121 | 690 |
| Child care and preschools | 57 | #620 of 1,611 | 376 | 8.2 | $1.3M | 126 | 661 |
| Home repair trades | 57 | #692 of 2,057 | 660 | 14.4 | $3M | 124 | 1,241 |
| House cleaning | 56 | #297 of 847 | 111 | 2.4 | $7.2M | 113 | 358 |
| Lawn, cleaning and pest control | 55 | #676 of 1,771 | 387 | 8.4 | $2.1M | 123 | 1,434 |
| Pest control | 54 | #297 of 699 | 79 | 1.7 | $10.1M | 99 | 91 |
| Pet stores | 53 | #422 of 974 | 97 | 2.1 | $4.4M | 97 | 44 |
| Coffee shops and cafes | 53 | #879 of 2,063 | 536 | 11.7 | $4.7M | 128 | 573 |
| Property management | 52 | #398 of 910 | 140 | 3.1 | Index only | 138 | 639 |
| Car washes and detailing | 51 | #694 of 1,451 | 156 | 3.4 | $3M | 118 | 112 |
| Mortgage brokers and lenders | 50 | #442 of 887 | 239 | 5.2 | Index only | 115 | 132 |
| Chiropractors | 50 | #728 of 1,490 | 318 | 6.9 | $2.3M | 97 | 226 |
| Gyms, studios and classes | 50 | #1,041 of 2,088 | 1,056 | 23.0 | $706K | 107 | 572 |
| Grocery stores | 49 | #1,043 of 2,070 | 419 | 9.1 | $9M | 96 | 452 |
| Hair salons | 49 | #1,227 of 2,339 | 1,303 | 28.4 | $480K | 111 | 738 |
| Yoga, Pilates and fitness studios | 48 | #418 of 777 | 172 | 3.8 | $4.3M | 107 | 262 |
| Gas stations | 48 | #1,265 of 2,358 | 491 | 10.7 | $2M | 84 | 376 |
| Home inspectors | 47 | #221 of 415 | 56 | 1.2 | Index only | 73 | 43 |
| Electricians | 47 | #656 of 1,160 | 210 | 4.6 | $9.5M | 79 | 498 |
| Fast food and sandwich shops | 46 | #1,303 of 2,222 | 908 | 19.8 | $2.8M | 92 | 1,430 |
| Restaurants and cafes | 46 | #1,351 of 2,405 | 6,614 | 144.4 | $384K | 104 | 3,405 |
| Auto repair and car care | 45 | #1,408 of 2,401 | 1,582 | 34.5 | $294K | 110 | 985 |
| Martial arts and dance studios | 43 | #863 of 1,334 | 417 | 9.1 | $1.8M | 89 | 310 |
| Clothing and shoe stores | 42 | #1,331 of 2,087 | 1,182 | 25.8 | $1.2M | 96 | 653 |
| Sit-down restaurants | 42 | #1,544 of 2,405 | 3,882 | 84.7 | $655K | 99 | 1,379 |
| Optometrists and eye care | 40 | #923 of 1,302 | 378 | 8.3 | $2M | 62 | 98 |
| Barbershops | 40 | #929 of 1,356 | 371 | 8.1 | $1.7M | 89 | 146 |
| Laundromats | 38 | #530 of 785 | 152 | 3.3 | $9.5M | 76 | 155 |
| Bakeries and dessert shops | 38 | #1,364 of 1,889 | 720 | 15.7 | $3.5M | 85 | 640 |
| Primary care and pediatrics | 37 | #1,234 of 1,656 | 555 | 12.1 | $1.3M | 75 | 1,666 |
| Clothing, shoes and laundry | 37 | #1,627 of 2,210 | 1,905 | 41.6 | $760K | 86 | 1,033 |
| Auto repair shops | 37 | #1,769 of 2,378 | 1,077 | 23.5 | $432K | 97 | 773 |
| Real estate agents and brokers | 36 | #1,816 of 2,176 | 2,237 | 48.8 | Index only | 88 | 769 |
| Real estate | 35 | #1,875 of 2,229 | 2,672 | 58.3 | Index only | 92 | 1,823 |
| Salons, barbers and spas | 35 | #1,959 of 2,385 | 3,218 | 70.2 | $194K | 91 | 1,747 |
| Spas and skin care | 33 | #1,466 of 1,769 | 854 | 18.6 | $732K | 84 | 278 |
| Physical therapy | 31 | #1,192 of 1,422 | 490 | 10.7 | $1.5M | 63 | 530 |
| Nail salons | 30 | #1,145 of 1,328 | 600 | 13.1 | $1M | 62 | 559 |
| Dry cleaners | 29 | #444 of 507 | 148 | 3.2 | $9.8M | 62 | 225 |
| Doctors, dentists and clinics | 29 | #2,134 of 2,394 | 7,122 | 155.4 | $104K | 68 | 3,537 |
| Dentists and orthodontists | 28 | #1,707 of 1,886 | 1,158 | 25.3 | $638K | 65 | 958 |
| Collision repair and body shops | 25 | #1,185 of 1,327 | 245 | 5.3 | $1.9M | 62 | 246 |
| Insurance agencies | 15 | #2,176 of 2,272 | 949 | 20.7 | $805K | 64 | 862 |
Household spending in Nassau County
What households here spend in a year on each line, in total and per household, with the index against the U.S. average (100).
| Spending line | A year, all households | Per household | Index vs. U.S. (100) |
|---|---|---|---|
| Vehicle maintenance and repairs | $465.6M | $1,016 | 106 |
| Gasoline and other fuels | $987.3M | $2,155 | 83 |
| Food away from home | $2.5B | $5,547 | 136 |
| Groceries | $3.8B | $8,193 | 130 |
| Personal care products and services | $625.1M | $1,364 | 136 |
| Child care and other personal services | $473.5M | $1,033 | 178 |
| Memberships, classes and admissions | $745.7M | $1,628 | 166 |
| Medical and dental services | $739.1M | $1,613 | 125 |
| Pets | $426.4M | $931 | 102 |
| Clothing, shoes and related services | $1.4B | $3,158 | 154 |
| Vehicle insurance | $763.6M | $1,667 | 85 |
| Home repairs, maintenance and insurance | $2B | $4,340 | 144 |
| Lawn care, cleaning and other household services | $799M | $1,744 | 123 |
| Rent and homeowner costs | $10.7B | $23,348 | 140 |
Household spending is estimated from the incomes of the households in each neighborhood, using what households at each income spent nationally in 2024, adjusted for the region. It counts what residents spend, wherever they spend it.
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 competitors on map listings by name and distance, for any of the 56 business types.
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 cardRelated markets
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- Westchester County, NY999,677 people
- Suffolk County, NY1,454,777 people
- Richmond County, NY494,956 people
- Rockland County, NY341,883 people
Questions
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. Against the 2015–2019 survey, median household income rose 25.9%, before inflation.
How much do households in Nassau County, NY spend?
Households in Nassau County spend about $10.7B a year on rent and homeowner costs, $3.8B on groceries and $2.5B on food away from home. Relative to the U.S., household spending in Nassau County runs highest on child care and other personal services (an index of 178, where 100 is the U.S. average) and lowest on gasoline and other fuels (83).
Which business types have the highest market scores in Nassau County, NY?
Of the business types scored in Nassau County, roofing and gutter companies (82), oil change and quick-lube shops (73) and funeral homes (70) have the highest Groundwork market scores. For roofing and gutter companies, that ranks #39 of 1,177 scored counties.
How does Nassau County, NY compare with the U.S.?
Median household income in Nassau County is $146,202, 81% above the U.S. median of $80,734. The population rose 0.6% from 2020 to 2025, against +3.1% for the U.S. The median home value is $684,700, against $332,700 for the U.S. Against the U.S., map listings per household run highest for dry cleaners (2.5 times the U.S. rate) and lowest for oil change and quick-lube shops (57% below the U.S. rate).
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. All 56 business types have a score in Nassau County, each ranked against other 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 competitors 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.
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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.