ZIP Code 11971 — Southold, New York

    📍 ZIP code 11971 is in Southold, Suffolk County, New York.

    ZIP code 11971 is located in Southold, Suffolk County, New York. It is a standard zip code in the Eastern Time Zone with an estimated population of 6,507. The area code for zip code 11971 is 631.

    ZIP
    11971
    City
    Southold
    County
    Suffolk County
    State
    New York
    Time Zone
    Eastern
    Area Code
    631
    Type
    Standard
    USPS City
    Southold
    Latitude
    41.0647° N
    Longitude
    72.4291° W
    Land Area
    11 sq mi
    Water Area
    4.1 sq mi

    ZIP Code 11971 Map

    Coordinates: 41.0647°N, 72.4291°W

    ZIP Code 11971 Demographics

    Population

    Total Population6,507
    Density592/sq mi
    Median Age52.8
    Male / Female50.2% / 49.8%

    Income & Economy

    Median Household$124,097
    Per Capita$74,677
    Poverty Rate3.5%
    Unemployment6.8%

    Housing

    Total Units3,963
    Owner-Occupied84.8%
    Renter-Occupied15.2%
    Median Home Value$762,700
    Median Rent$2,240

    Education

    High School Grad91.9%
    Bachelor's Degree52.8%

    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 11971 in Context

    The median home in 11971 is valued at $762,700 against a median household income of $124,097, a price-to-income ratio of 6.1. That is far above the 2.9 median across the 1,572 New York ZIP codes with published housing data, and well past the 3.0 ratio that marks an attainable market nationally, so buying here on a local median income requires substantial savings or a second income. Within Suffolk County, 11971 ranks 73 of 95 ZIPs on affordability (1 = lowest ratio); the county median ratio is 4.2. Renting takes 21.7% of median household income (median rent $2,240 a month), under the 30% cost-burden threshold.

    11971 ranks 245 of 1,572 statewide on median household income and 165 of 1,572 on median home value; its income is in line with the $128,844 Suffolk County median. 85% of households own their home, above the 80% statewide ZIP median, making this a majority-owner ZIP. 53% of adults hold a bachelor's degree or higher, far above the 31% median, and the poverty rate is 3.5%, far below the 9.9% statewide ZIP median and among the lowest in the state. Unemployment stands at 6.8%.

    With 592 residents per square mile across 11 square miles of land, 11971 is far denser than the statewide ZIP median of 197 (rank 576 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 11971 primarily serves Southold in Suffolk County, New York.

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