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Southold CDP, NY

ZIP Code 11971 — Southold CDP, NY Demographics & Data

Source: U.S. Census Bureau ACS 2019–2023 5-Year Estimates. Page data updated 2026-08-02.

Upper Middle ClassLow Snow Area

Map, Quick Facts & Location

Quick Facts

Local time
Population
6,507
Median Income
$124,097
+65% vs US avg
Home Value
$762,700
+119% vs US avg
Median Rent
$1,848
+59% vs US avg
Median Age
52.8 yrs
+36% vs US avg
Area Code
Congress
Top Ancestry
IrishGermanItalian
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Location
Coordinates
41.0640, -72.4309
Elevation
20 ft
Land Area
11.1 sq mi
Water Area
4.1 sq mi (27% water)

At a glance

Population
6,507
Density
N/A
Median income
$124,097
+65% vs US avg
Home value
$762,700
+119% vs US avg
Median rent
$1,848
+59% vs US avg
Timezone

Overview of ZIP Code 11971

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What to know about ZIP 11971

ZIP code 11971 covers Southold, NY in Suffolk County with a population of about 6,507.

At a glance, the area shows median age of 52.8 versus a U.S. median of about 38.9.

It sits in telephone area codes 631, 934; U.S. House district NY-1; the NEW YORK media market.

Income and economy in Southold, NY

Median household income in ZIP 11971 is about $124,097 — about 65% above the U.S. median ($75,149).

On socioeconomic markers, US5 shows a poverty rate of 3.5%; unemployment rate near 6.8%; 52.8% of adults with a bachelor’s degree or higher (about 19.1 points above the national share (33.7%)).

Labor and commute patterns include leading industry context around Retail trade, Healthcare, and Construction; about 12.7% of workers reporting work-from-home (about 2.5 points below the U.S. share (15.2%)); a mean commute of about 180.0 minutes (U.S. average near 26.8).

Housing and affordability in ZIP 11971

Median home value is about $762,700 — about 119% above the U.S. median home value ($348,079).

Housing tenure and rents show median gross rent around $1,848 (about 59% above the U.S. median rent ($1,163)), and owner-occupancy near 84.8% (about 19.4 points above the national owner-occupancy rate (65.4%)).

To comfortably buy a median-priced home in ZIP 11971 in Southold, NY, a household would need roughly $210,000 in annual income under a 20% down, 30-year loan at 6.8% (illustrative), keeping housing costs near 28% of income. Estimated monthly PITI is about $4,899. That is about 69% above the local median household income ($124,097), so the median earner would likely stretch or need a larger down payment. Rates, taxes, insurance, and HOA fees vary — treat this as a planning estimate, not a lender quote.

Climate risk and migration signals

FEMA’s National Risk Index rates natural-hazard risk for Southold CDP, NY as Relatively High (composite score 97.3), which is among the highest nationally. The strongest component scores on US5 are flood (98.3) and hurricane (96.8). These scores are county-linked NRI values published for planning context — all ZIP codes in the same county share the same composite score on US5. Useful when comparing insurance and disaster exposure across areas, not a substitute for a parcel-level flood or fire determination.

Climate normals for Southold CDP, NY show little to no average snow and around 45.0 inches of annual precipitation.

IRS migration statistics show a net inflow of about 281 for ZIP 11971 (Southold CDP, NY) on US5’s published series — a signal of people/tax filers moving in relative to those leaving. Inflows often track job growth, housing demand, or lifestyle migration; treat the figure as a directional indicator rather than a precise headcount.

Nearby (from this ZIP)

Airport GON (27.2 miles (43.8 km)) · Mitchell College (25.2 miles (40.6 km)) · Fire Island National Seashore (39.1 miles (62.9 km)) · VA: Riverhead Clinic (15.9 miles (25.7 km))

Full lists and map pins are in the Infrastructure section below.