ZIP Code 11777 — Port Jefferson, New York

    📍 ZIP code 11777 is in Port Jefferson, Suffolk County, New York.

    ZIP code 11777 is located in Port Jefferson, Suffolk County, New York. It is a standard zip code in the Eastern Time Zone with an estimated population of 9,347. The area code for zip code 11777 is 631.

    ZIP
    11777
    City
    Port Jefferson
    County
    Suffolk County
    State
    New York
    Time Zone
    Eastern
    Area Code
    631
    Type
    Standard
    USPS City
    Port Jefferson
    Latitude
    40.9561° N
    Longitude
    73.0667° W
    Land Area
    4.4 sq mi
    Water Area
    2.1 sq mi

    ZIP Code 11777 Map

    Coordinates: 40.9561°N, 73.0667°W

    ZIP Code 11777 Demographics

    Population

    Total Population9,347
    Density2,124/sq mi
    Median Age45.2
    Male / Female47.9% / 52.1%

    Income & Economy

    Median Household$148,519
    Per Capita$77,057
    Poverty Rate5%
    Unemployment3.5%

    Housing

    Total Units3,893
    Owner-Occupied74.3%
    Renter-Occupied25.7%
    Median Home Value$655,900
    Median Rent$2,261

    Education

    High School Grad96.5%
    Bachelor's Degree68.7%

    Population and demographic data sourced from the U.S. Census Bureau American Community Survey (ACS) 5-Year Estimates. ZIP code routing data sourced from the United States Postal Service (USPS).

    Affordability & Profile: ZIP 11777 in Context

    The median home in 11777 is valued at $655,900 against a median household income of $148,519, a price-to-income ratio of 4.4. That is far above the 2.9 median across the 1,572 New York ZIP codes with published housing data, and past the 3.0 ratio that marks an attainable market nationally, though it is among the more attainable ratios in the state. Within Suffolk County, 11777 ranks 54 of 95 ZIPs on affordability (1 = lowest ratio); the county median ratio is 4.2. Renting takes 18.3% of median household income (median rent $2,261 a month), under the 30% cost-burden threshold.

    11777 ranks 136 of 1,572 statewide on median household income and 239 of 1,572 on median home value; its income is above the $128,844 Suffolk County median. 74% of households own their home, below the 80% statewide ZIP median, making this a majority-owner ZIP. 69% of adults hold a bachelor's degree or higher, far above the 31% median, and the poverty rate is 5.0%, below the 9.9% statewide ZIP median and among the lowest in the state. Unemployment stands at 3.5%.

    With 2,124 residents per square mile across 4.4 square miles of land, 11777 is far denser than the statewide ZIP median of 197 (rank 399 of 1,572). This is a low-density pattern of large lots, small towns or scattered subdivisions.

    Ratios and ranks are computed from the ACS figures above across the 1,572 New York ZIP codes with published housing data. See the 2026 New York affordability report for the statewide analysis and the methodology for definitions.

    Nearby Zip Codes

    Cities & Places Served

    ZIP code 11777 primarily serves Port Jefferson in Suffolk County, New York.

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