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Summary for Port Jefferson

About Port Jefferson (Click for our profile page)

Located in: Suffolk County (see below)

Typical Abbreviation: Prt. Jefferson

Time Zone: Port Jefferson lies in the Eastern Time Zone (EST/EDT)

Telephone Area Codes: 631 & 934<1>

ZIP Code: 11777<2>

Elevation: 230 feet [70.1 m] above sea level<3>

From the 2010 US Census (For more detail, see our Census Page for Port Jefferson)

Population

Year	Population
2019 Est:<4>	8,153 (5.2% increase since 2010)
2010:	7,750 (1.11% decrease since 2000)
2000:	7,837

Total Area:<5> 3.08 sq. miles [8 km²]

Housing Units:<6> 3,270

Official Website: www.portjeff.com/

GPS Coordinates (Latitude/Longitude)<7>

For the purpose of mapping and calculating distances, we have chosen the following reference point for Port Jefferson:

Lat: 40.946700° (or 40°56'48" N)

Lon: -73.069300° (or -73°4'9" W)

USGS Topo Map: Port Jefferson<8>

Federal GNIS/FIPS Codes for Port Jefferson

GNIS ID: 2391078

FIPS State / Place Code: 36 / 59355

(For more about Federal Codes, see our Misc Page for Port Jefferson)

About Suffolk County

The village of Riverhead is the County Seat for Suffolk County.

From the 2010 US Census (For more detail, see our Census Page for Suffolk)

Population

Year	Population
2019 Est:	1,476,601 (1.19% decrease since 2010)
2010	1,494,339 (5.28% increase since 2000)
2000:	1,419,369

Total Area: 2,373 sq. miles [6,146.4 km²] - of which 61.6% is water (1,461 sq. miles [3,784.2 km²])

Housing Units: 569,985

Official Website: https://www.suffolkcountyny.gov/

Federal GNIS/FIPS Codes for Suffolk

GNIS ID: 974149

FIPS State / County Code: 36 / 103

(For more about Federal Codes, see our Misc Page for Port Jefferson)

About New York

From the US Census

Population

Year	Population
2019 Est:	19,463,131 (0.44% increase since 2010)
2010:	19,378,102 (2.12% increase since 2000)
2000:	18,976,457

Websites for State of New York

Official Website: https://www.ny.gov/

Tourism: https://www.iloveny.com/

Parks: https://parks.ny.gov/

Fishing: https://dec.ny.gov/things-to-do/freshwater-fishing

Hunting: https://dec.ny.gov/things-to-do/hunting

Federal GNIS/FIPS Codes for State of New York

GNIS ID: 1779796

FIPS State: 36

(For more about Federal Codes, see our Misc Page for Port Jefferson)

Footnotes ...

<1>	When there's a risk of an area code running out of phone numbers, an 'Overlay Area Code' is created that has the same geographic boundaries as the existing area code. In this case, the 631 code has been Overlayed with the 934 area code. New phone numbers in the Port Jefferson area will be assigned with one of these codes: 631 or 934. As a result, placing a call in the Port Jefferson area will require 10-digit dialing (where you enter both the area code and then the phone number).
<2>	ZIP Codes have been created by the United States Postal Service (USPS) as a way of grouping addresses to make delivery more efficient. The boundaries of the ZIP Code can be changed, re-assigned, eliminated or overlapped with other ZIP Codes. So keep in mind that any given ZIP Code is only 'loosely' associated with a village (such as Port Jefferson). When looking for a ZIP Code, whether Port Jefferson or elsewhere, it's always best to check the website of the United States Postal Service (USPS).
<3>	The elevation is an estimate for the area around Port Jefferson - it will be higher in some places and lower in others.
<4>	Every year, the US Census Bureau creates a population estimate for the preceeding year. Keep in mind that this value is an estimate and not an actual count. The most recent Census estimate is for the year 2019.
<5>	The area value has been supplied by the US Census Bureau and it can be different than the geographic boundaries of Port Jefferson. The value given by the Census Bureau reflects their statistical (or sampling) requirements. For example, if there is a cluster of people living just outside of the community's official boundary, the Census-defined area might be expanded to include that group.
<6>	A Housing Unit is a broad term for those places where people live (whether occupied or temporarily vacant), such as a house, an apartment, a mobile home, or an area that is considered as a separate living quarter. Separate living quarters (consisting of one or more rooms) are considered to be those places where people live, sleep and eat separately from others and that have access to the outside (either directly or by a shared hallway).
<7>	Longitude & latitude values may not be the geographic center of Port Jefferson, rather it may be a prominent intersection or the center of population, etc. It will vary depending on the source.
<8>	Name of the USGS 7.5 Minute topographic map which includes Port Jefferson.