Town of Shelter Island, Suffolk County, New York

The Town of Shelter Island is a town in Suffolk County, New York. About 3,355 people live there (2020–2024 estimate). It covers 12.2 sq mi (31.6 km²) of land and uses Eastern Time. It has its own local government.

New YorkBuffaloYonkers
Town of Shelter Island in New York
Town of Shelter Island and its neighbors (simplified outlines). Open in OpenStreetMap ↗
Population, 2020–2024 estimate
3,355 ± 448
County
Suffolk County
School district
Shelter Island Union Free School District
Land area
12.2 sq mi (31.6 km²)
Type
TownIts own local government
Time zone
Eastern TimeUTC-05:00 in January; UTC-04:00 in July
Median household income
$133,967 ± $47,985
Median home value
$1,104,300 ± $107,183
Water area
16.5 sq mi (42.8 km²)
State
New York
Census code (GEOID)
3610366839
Coordinates (central point)
41.065576, -72.319645

These coordinates mark a central point for the area, not a street address. Population, income and home value: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, ± margin at 90% confidence; checked on October 20, 2026.

Cities, towns and communities in the Town of Shelter Island, largest first

  1. Shelter Island (CDP)2,125 people
  2. Shelter Island Heights (CDP)1,230 people
  3. Dering Harbor (village)0 people

These places’ central points lie inside the Town of Shelter Island. A place can reach across the line, and its government, if it has one, can be separate from the town’s.

Bordering areas, nearest first

  1. Town of Southold5.1 mi north
  2. Town of East Hampton11 mi east
  3. Town of Southampton15 mi southwest

These towns, townships, cities and boroughs share a boundary with the Town of Shelter Island. Distances are straight lines between central points, not driving distances.

Other towns in Suffolk County, largest first

  1. Town of Brookhaven489,810 people
  2. Town of Islip339,106 people
  3. Town of Babylon218,262 people
  4. Town of Huntington204,059 people
  5. Town of Smithtown116,097 people
  6. Town of Southampton69,679 people
  7. Town of Riverhead35,980 people
  8. Town of East Hampton28,701 people
  9. Town of Southold23,905 people

People counts are American Community Survey 2020–2024 5-year estimates. See Suffolk County for its cities, ZIP Code areas and county seat.

Sunrise and sunset in the Town of Shelter Island

Longest day
15 hours 8 minutes around June 21
Shortest day
9 hours 13 minutes around December 21
Earliest sunrise
5:16 AM around June 14
Latest sunrise
7:25 AM the day before clocks go back in November
Earliest sunset
4:20 PM around December 8
Latest sunset
8:25 PM around June 27

Clocks go forward an hour on the second Sunday in March and back on the first Sunday in November, so sunrise and sunset jump an hour later in March and an hour earlier in November.

Sunrise and sunset on the 15th of each month
DaySunriseSunsetDaylight
Jan 157:12 AM4:45 PM9 h 33 min
Feb 156:43 AM5:23 PM10 h 40 min
Mar 157:01 AM6:55 PM11 h 54 min
Apr 156:10 AM7:28 PM13 h 18 min
May 155:31 AM8:00 PM14 h 29 min
Jun 155:16 AM8:23 PM15 h 7 min
Jul 155:29 AM8:20 PM14 h 51 min
Aug 155:58 AM7:48 PM13 h 50 min
Sep 156:29 AM6:58 PM12 h 29 min
Oct 157:00 AM6:08 PM11 h 8 min
Nov 156:36 AM4:30 PM9 h 54 min
Dec 157:07 AM4:21 PM9 h 14 min

Approximate times for a flat horizon at the central point; the days move by a day or so from year to year. Hills and weather can change what you see.

Before using this answer on a form

A town line is not always the line on your mail: a mailing address can name another town or post office, and school districts, ZIP Codes and tax districts follow their own lines. For taxes, voting or permits, check the full address with Suffolk County or the local office.

Find the township or town where you are now or find your county.

See this area on Census.gov ↗