PlainZIP

Southold, NY · standard

ZIP Code 11971

Suffolk County, New York - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.

5,818
203/sq mi
$129,507
Median income
$843,300
Median home value
55.2%
Bachelor's or higher

The verdict

Southold pairs a top-decile household income with top-decile home values, in a low-density, homeowner-dominated area.

Top 7%
household income, US ZIPs
Top 4%
home value, US ZIPs
203
people per sq mi
84%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 11971 against every reporting US ZIP.

ZIP code 11971 is a mid-sized community (a standard USPS delivery area) in Southold, Suffolk County, New York, home to 5,818 residents across 28.7 square miles, a density of 203 people per square mile, in the New York time zone.

ZIP 11971 skews affluent, with a median household income of $129,507 (40% above the New York average), while per-capita income is $76,891. Local economic indicators show a 3.9% poverty rate alongside 6.0% unemployment. Median home value sits at $843,300 (123% above the state average), median rent at $2,335 a month, and owner-occupancy at 84.3%.

This is a highly-educated ZIP: 55.2% of adults hold a bachelor's degree or higher, the median age is 48.7, and the average commute is 27 minutes. To put 11971 in local context, 10 ZIP codes within roughly 10 miles appear further down this page alongside 6 additional ZIPs in Suffolk County, for a geography-aware comparison.

Every figure on this page is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates (including median rent) and the FHFA House Price Index, no estimates, no proprietary scoring. Verify with Census →

Top industries in ZIP 11971

Top 5 sectors by establishment count in Southold, NY

Which industries have the most business establishments in ZIP 11971.

establishments

What this shows Establishment counts come from the Census ZIP Code Business Patterns program, which counts physical business locations rather than employees or revenue.

Source U.S. Census Bureau · ZIP Code Business Patterns (ZBP) As of 2023

Source: U.S. Census Bureau, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + FHFA HPI ACS demographics and median rent, ZBP business establishments, FHFA HPI for ZIP 11971, Southold, NY · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; FHFA HPI updated quarterly/annually.

Quick Facts

5,818

Population

28.7

Area (sq mi)

203

People / sq mi

New York

Time Zone

standard

ZIP Type

Neighborhood Scorecard
Get an A-F grade across income, safety, housing, rent, education, commute, and childcare for this ZIP code.
View Scorecard →

Who lives in ZIP 11971?

48.7

Median Age

49.3%

Male

50.7%

Female

12.4%

Foreign-Born

White 80.4%
African American 0.7%
Asian 3.2%
American Indian or Alaska Native 0.0%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 5.9%
Hispanic or Latino 14.7%

Hispanic or Latino is an ethnicity category from the Census Bureau and may overlap with other categories above.

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

How much do residents earn?

$129,507

Median Household Income

+40% vs state

$76,891

Per Capita Income

3.9%

Poverty Rate

6.0%

Unemployment Rate

27.4 min

Mean Commute Time

How ZIP 11971 ranks nationally

Southold, NY household income vs. every US ZIP code

Median household income, the full national distribution, with this ZIP marked

$129,507 Top 7% higher than 93% of 30,318 US ZIPs

$0–$20,000: 118 US ZIPs (0%). Below this entry. $20,000–$40,000: 1,573 US ZIPs (5%). Below this entry. $40,000–$60,000: 7,092 US ZIPs (23%). Below this entry. $60,000–$80,000: 9,980 US ZIPs (33%). Below this entry. $80,000–$100,000: 5,778 US ZIPs (19%). Below this entry. $100,000–$120,000: 2,855 US ZIPs (9%). Below this entry. $120,000–$140,000: 1,362 US ZIPs (4%). This entry sits in this band. $140,000–$160,000: 686 US ZIPs (2%). Above this entry. $160,000–$180,000: 364 US ZIPs (1%). Above this entry. $180,000–$200,000: 186 US ZIPs (1%). Above this entry. $200,000–$220,000: 324 US ZIPs (1%). Above this entry. This ZIP $0 $200K+ every reporting US ZIP, bucketed by value

Each bar is a $20K-wide band; taller bars hold more US ZIPs. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source U.S. Census Bureau, ACS 5-Year Estimates · 2019–2023

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What is the education profile here?

High School Graduate or Higher 74.8%
Bachelor's Degree or Higher 55.2%

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What does housing look like?

3,946

Total Housing Units

2,437

Occupied Units

1,509

Vacant Units

2.59

Avg Household Size

Occupancy Type

Owner 84.3%
Renter 15.7%

$843,300

Median Home Value

+123% vs state

$2,335

Median Rent

1971

Median Year Built

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

How have home values changed over time?

FHFA House Price Index, annual appreciation data based on repeat sales and appraisals

+2.3%

YoY Change (2024)

346

HPI Index (2000 = 100)

+246%

Total Change Since 2000

Home values in ZIP 11971 have increased 2.3% over the past year (2024). Since 2000, this ZIP has seen +246% cumulative appreciation.

Year Annual Change HPI Index
2020 +4.9% 236
2021 +12.0% 265
2022 +16.3% 308
2023 +10.1% 339
2024 +2.3% 346

Source: Federal Housing Finance Agency (FHFA) House Price Index, All-Transactions, Five-Digit ZIP Codes (Developmental Index). Index base = 100 in year 2000. Data through 2024. ZIP codes with few transactions may show missing values.

What businesses operate in this ZIP?

Census Bureau data shows 233 business establishments in ZIP 11971, employing approximately 1,306 people with a combined annual payroll of $68,857,000.

233

Businesses

1,306

Employees

$68.9M

Annual Payroll

12

Industry Sectors

Industry Establishments % of Total
Construction 39 16.7%
Accommodation and food services 30 12.9%
Retail trade 28 12.0%
Professional, scientific, and technical services 25 10.7%
Administrative and support and waste management and remediation services 21 9.0%
Health care and social assistance 20 8.6%
Other services (except public administration) 18 7.7%
Real estate and rental and leasing 15 6.4%
Arts, entertainment, and recreation 10 4.3%
Manufacturing 8 3.4%
Wholesale trade 8 3.4%
Transportation and warehousing 6 2.6%

Source: U.S. Census Bureau, ZIP Code Business Patterns (ZBP), 2023. Employment figures may include noise for disclosure avoidance.

Nearby ZIP Codes

Want a side-by-side? Compare 11971 vs 11958 →

ZIP 11971 vs its nearest neighbors, by population

Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.

residents

What this shows Among its immediate neighbors, ZIP 11971 ranks #2 by population - useful context the national average alone can't give.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023

ZIP 11971 vs its nearest neighbors, by median income

Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.

median income

What this shows By household income, ZIP 11971 ranks #5 of 9 neighboring ZIPs, local affluence varies block to block, not just metro to metro.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023
ZIP Code City Population Distance
11958 Peconic, NY 635 2.4 mi
11965 Shelter Island Heights, NY 534 4.0 mi
11944 Greenport, NY 4,299 4.0 mi
11935 Cutchogue, NY 3,304 4.4 mi
11964 Shelter Island, NY 1,858 5.5 mi
11956 New Suffolk, NY 349 5.8 mi
11939 East Marion, NY 926 6.5 mi
11963 Sag Harbor, NY 6,622 7.1 mi
11952 Mattituck, NY 4,637 7.5 mi
11976 Water Mill, NY 1,565 10.0 mi

More ZIP Codes in Suffolk County

11746 standard
Huntington Station, NY
Pop: 67,094
11706 standard
Bay Shore, NY
Pop: 62,543
11717 standard
Brentwood, NY
Pop: 60,745
11757 standard
Lindenhurst, NY
Pop: 45,700
11772 standard
Patchogue, NY
Pop: 44,837
11743 standard
Huntington, NY
Pop: 42,230

Related Areas

Suffolk County Southold, NY New York

Frequently Asked Questions

What county is ZIP code 11971 in? ▼
ZIP code 11971 (Southold) is located in Suffolk County, New York. Suffolk County contains multiple ZIP codes, see the full list at /counties/suffolk-ny.
What is the population of ZIP code 11971? ▼
ZIP code 11971 in Southold, NY has a population of 5,818 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 11971? ▼
The median household income in ZIP 11971 is $129,507, which is 70% above the national average of $76,288.
What is the average home value in ZIP 11971? ▼
The median home value in ZIP 11971 is $843,300, which is 203% above the national average of $278,155.
What is the demographic makeup of ZIP 11971? ▼
The largest racial group in ZIP 11971 is White at 80.4%. Hispanic or Latino residents make up 14.7% of the population.
How many businesses are in ZIP code 11971? ▼
ZIP code 11971 has 233 business establishments employing approximately 1,306 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 11971? ▼
The top industries by establishment count in ZIP 11971 are: Construction (39), Accommodation and food services (30), Retail trade (28). There are 12 industry sectors represented in total.
How have home values changed in ZIP code 11971? ▼
According to the FHFA House Price Index, home values in ZIP 11971 increased by 2.3% in 2024. Since 2000, home values in this ZIP have appreciated by approximately 246%. This is a developmental index based on repeat sales and appraisal data from Fannie Mae and Freddie Mac.
What is the education level in ZIP code 11971? ▼
In ZIP code 11971, 74.8% of residents aged 25+ have a high school diploma or higher, and 55.2% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What is the average commute time in ZIP 11971? ▼
The mean commute time for workers in ZIP code 11971 is 27.4 minutes according to Census ACS data. The national average is roughly 26 minutes, so commuters here spend more time traveling to work than typical.
What percentage of residents own vs. rent in ZIP 11971? ▼
In ZIP code 11971, approximately 84.3% of occupied housing units are owner-occupied and 15.7% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 11971? ▼
The poverty rate in ZIP code 11971 is 3.9% according to Census Bureau ACS 2023 estimates. This measures the percentage of the population living below the federal poverty threshold.

Read our methodology to see how this data is sourced, computed, and verified.