Jeremiah Kinner (1756-1838) home in Mount Sinai, New York in 1913, 1913
Mount Sinai’s story
362 years in pictures
The archive holds 6 old photos and papers going back to 1873 and 5 maps from 1902 on.
- 1664Mount Sinai is founded
Mount SinaiNY
5 bordering townsMap →
Photo: Iracaz · CC BY-SA 3.0
Population
11,093
Census survey, 2020–24
Typical home
$770K
+6.5% in a year
Household income
$162K
median
Median age
46.6
years
Jobs based here
1,675
A commuter town
Is Mount Sinai a good place to live?
Mount Sinai’s rent at the middle of the market is $3,088 a month, where New York’s towns sit at $1,101 a month and U.S. towns at $1,185 a month. Only 6 of the 759 New York towns we compare have a lower share of residents below the poverty line than Mount Sinai. Mount Sinai’s trail network density is 1.4 miles per square mile, above both the New York town median (0.4) and the median of U.S. towns (0.4). Cedar Beach Town Park, at 58 acres with 1.5 miles of trail, is the biggest park or preserve. We don’t grade Mount Sinai yet; the figures below are still real.
What makes Mount Sinai stand out
Where Mount Sinai beats most towns.
Nearby attractions
All 536 attractions →Nassau Veterans Memorial Coliseum and 81 more within 40 miles
Museums, parks, gardens and other places to visit around Mount Sinai. Close and well known come first.
33 mi Stadium & arenaNassau Veterans Memorial Coliseum
26 mi Stadium & arenaYale Bowl
25 mi National Historic SiteSagamore Hill National Historic Site122K visitors a year
30 mi MuseumGlass House
35 mi State parkJones Beach State Park
11 mi LandmarkCalverton National CemeterySources: National Park Service · ski areas © OpenSkiMap / OpenStreetMap contributors · Wikidata · Wikipedia readership · photos via Wikimedia Commons
Photo credits
Nassau Veterans Memorial Coliseum: iMatthew // talk //, Public domain · Yale Bowl: Kenneth Zirkel, CC BY-SA 4.0 · Sagamore Hill National Historic Site: Unknown, Public domain · Glass House: Carol M. Highsmith, Public domain · Jones Beach State Park: Bjoertvedt, CC BY-SA 3.0 · Calverton National Cemetery: United States Department of Veterans Affairs, Public domain
Getting set up
Moving to Mount Sinai: who provides what
Mount Sinai is unincorporated, so Suffolk County and regional agencies provide most services.
PowerPSEG Long Island26.2¢/kWh · EIA 2025HIFLD · EIA
WaterSuffolk County Water AuthorityNo health-based violations in 5 years · EPAEPA
Internet3 providers98% of addresses get 100/20 MbpsFCC
Trash & county servicesSuffolk CountySuffolk County provides services here
Register to voteOnlineIn New York you can register online until 10 days before Election Day, in person until 10 days before Election Day, or by mail (postmarked 15 days before and received 10 days before).vote.govWho runs elections hereSuffolk County Board of ElectionsSuffolk County; contacts on the Handbook page.FVAP, Sep 2024
ZIP codes11766, 1177611766 95% · 11776 4%Census 2020
EPA SDWIS (Oct 9, 2026) · HIFLD + EIA-861 2025 · Census 2020 ZCTAs · NCES 2024–25 · registration: vote.gov, updated Aug 3, 2026.
The data
Ordered by what stands out in Mount Sinai.
Natural hazards
The biggest natural risk in Mount Sinai is inland flooding, at a very low overall level
Expected losses in Mount Sinai break down as 66% from inland flooding and 14% from hurricanes. Storm and flood damage is expected to run lower than in 91% of U.S. communities. Also worth knowing: since 1979, Mount Sinai has seen 8 flood insurance claims paid out.
9risk score of 100
FEMA risk score
Inland floodingHurricanesEarthquakes
8
paid flood claims since 1979
FEMA flood insurance claims · FEMA National Risk Index · OpenFEMA
Housing
Zillow puts the typical Mount Sinai home at about $770K
Typical home values rose 6.5% in the year to September 2026. For households in Mount Sinai, the share who are owner-occupiers is 93%. On the market here: a median 31 days to sell.
$770KZillow home value
Typical home value
Mount Sinai$770K
New York$525K
Market temperature
31
days on market
101.6%
sale-to-list price
+6.5%
value change, 1 year
14
homes sold in September
Census ACS, 2020–24 · Zillow Home Value Index · Redfin Data Center
Work & commute
Mount Sinai has 0.3 jobs for every working resident, so most commute out
The top destinations are Brookhaven (39%), New York (16%) and Islip (13%). For most workers, Mount Sinai is a place to come home to: only 6% work in town. Its median household income stands at $162,000.
6%work in town
| Mount Sinai | New York towns | U.S. towns | |
|---|---|---|---|
| Median household income | $162,000 | $82,000 | $80,000 |
| Average trip to work | 37 minutes | 25 minutes | 25 minutes |
| Working residents who work in town | 5.6% | 10% | 8% |
| Work from home | 13% | 12% | 11% |
Where working residents work
In Mount Sinai6%
Brookhaven39%
New York16%
Islip13%
Smithtown6%
13 mi
median commute distance
1,675
jobs based in Mount Sinai
A commuter town
jobs vs. working residents
Census LEHD 2023 · ACS
Climate
Four seasons and pleasant summers: that is Mount Sinai’s year
July afternoons reach 83°, January nights drop to 24° and about 32 inches of snow falls in a winter.
32″snow a winter
Typical low → high °F
Winter26–42°
Spring40–58°
Summer64–81°
Fall48–64°
Nov 7
typical first frost
Apr 4
typical last frost
+2.3°
vs. the 20th-century average
NOAA U.S. Climate Normals, 1991–2020
Health
How healthy Mount Sinai is
Among adults in Mount Sinai, 83% had a checkup this year. This New York town beats the New York average on 19 of 32 CDC measures and trails it on 2. 27% of adults in Mount Sinai feel lonely; 13% report frequent mental distress.
| Mount Sinai | New York towns | U.S. towns | |
|---|---|---|---|
| Depression (CDC PLACES) | 16% | 21% | 23% |
| Feel lonely (CDC PLACES) | 27% | 32% | 33% |
| Frequent mental distress (CDC PLACES) | 13% | 16% | 17% |
| Smoke cigarettes (CDC PLACES) | 8.3% | 13% | 14% |
32 measures vs. New York
19 better11 too close to call2 worse
| What stands out | Mount Sinai | NY |
|---|---|---|
| Fewer adults facing food insecurity | 8.1% | 17.2% |
| Fewer adults facing a utility shut-off | 4.2% | 8.2% |
| More adults who have had cancer | 10.7% | 7.7% |
St. Charles Hospital
2.1 mi away · emergency room
None
primary care, dental or mental-health shortage
CDC PLACES 2025 · modeled estimates for adults · CMS · HRSA
7%conserved
7%
conserved · 332 of 4,731 acres
10 mi
of trails · 1.4 per sq mi
| Biggest places to walk | Trails | Acres |
|---|---|---|
| 1. Chandler Estate County Park | 1.6 mi | 41 |
| 2. Cedar Beach Town Park | 1.5 mi | 58 |
| 3. North Shore Rail Trail | — | 23 |
Trails & parks © OpenStreetMap contributors · Conserved land: USGS PAD-US
Keep exploring
Everything we know about Mount Sinai
17pages on Mount Sinai
The big questions
Out and about
After high school
Colleges nearby
2 within 15 miles of the center of Mount Sinai
Stony Brook UniversityUniversity or college · Public · Stony Brook5.6 mi$10,931 in-state tuitionSuffolk County Community CollegeCommunity college · Public · Selden6.7 mi$6,630 in-state tuition
About 4 of every 100 Mount Sinai residents are enrolled in college, against 7 across New York.
A commuter town
94% of working residents leave Mount Sinai for work
Where Mount Sinai’s working residents go each day. Line width shows the share.
1,675jobs based in Mount Sinai
6%of working residents work in town
13 mimedian commute distance
Census LEHD 2023
Famous people from Mount Sinai
3 notable people were born in Mount Sinai.
About Mount Sinai
Hamlet and census-designated place in New York, United States
Mount Sinai is a hamlet and census-designated place (CDP) located within the Town of Brookhaven, in Suffolk County, New York, United States. As of the 2020 census, Mount Sinai had a population of 11,623. The hamlet is located on the North Shore of Long Island. Mount Sinai was first settled in the 1660s and was known by the name of Old Mans until a name change in the 1840s. Initially an agricultural hamlet, it transitioned into a popular resort town in the late-19th century and developed into a suburb of New York City in the mid-20th century. While primarily a residential community, the hamlet contains Mount Sinai Harbor and its popular public beach, Cedar Beach.
From Wikipedia, licensed CC BY-SA 4.0 · facts via Wikidata (CC0)
- Area
- 6.4 sq mi
- Elevation
- 33 ft
- ZIP code
- 11766
- Area code
- 631
Mount Sinai’s neighbors
5 towns share a border with Mount Sinai.
Port JeffersonMiller PlaceTerryvilleCoramPort Jefferson StationMount Sinai
How the neighbors grade
| Town | NY rank | Overall | Cost | Safety | Schools | Health |
|---|---|---|---|---|---|---|
| Mount Sinai | — | — | — | — | — | — |
| Port Jefferson | #63 | A | D− | — | A | A+ |
| Miller Place | — | — | — | — | — | — |
| Terryville | — | — | — | — | — | — |
| Coram | — | — | — | — | — | — |
| Port Jefferson Station | — | — | — | — | — | — |
Port Jefferson reports no FBI crime data of its own. Mount Sinai, Miller Place, Terryville, Coram and Port Jefferson Station aren’t graded (fewer than 1,000 residents, or not enough data). Compare Mount Sinai with a neighbor →
Questions about Mount Sinai
Short answers, built from the data on this page.
Is Mount Sinai, NY a good place to live?
We don’t grade Mount Sinai yet; the figures below are still real.
What is Mount Sinai, NY known for?
3 notable people were born here, including Trent Barreta and Sam Faber.