ZIP Code 11931, New York
ZIP Code 11931 profile, demographic data, and geographic information.
ZCTA5 11931 is a 5-digit ZIP Code area located in Suffolk County, New York. As of official census estimates, it has a reported population of 27. The land area covers 0.22 sq mi. [1]
Demographics & Population
| Demographic Metric | Estimate / Count | Margin of Error | Survey Period / Source |
|---|---|---|---|
| Total Population | 27 | ±41 | 2020-2024 / Census ACS 5-Year 2024 |
| Median Age | Suppressed | — | 2020-2024 / Census ACS 5-Year 2024 |
| Total Households | 13 | ±20 | 2020-2024 / Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).
Housing & Real Estate Profile
| Housing Metric | Estimate / Value | Margin of Error |
|---|---|---|
| Total Housing Units | 13 | ±20 |
| Occupied Housing Units | 13 | ±20 |
| Vacant Housing Units | 0 | ±14 |
| Median Home Value | Suppressed | — |
| Median Gross Rent | Suppressed | — |
Source: U.S. Census Bureau ACS 5-Year (2020-2024).
Economy & Workforce
| Economic Metric | Estimate / Value | Margin of Error |
|---|---|---|
| Median Household Income | Suppressed | — |
| Per Capita Income | Data unavailable | — |
| Poverty Rate | 0% | ±51.9% |
| Population Below Poverty Level | 0 | ±14 |
| Unemployment Rate | 0% | ±51.9% |
| Civilian Labor Force, Employed | 27 | ±41 |
| Broadband Internet Rate | 100% | ±0% |
Source: U.S. Census Bureau ACS 5-Year (2020-2024).
Local Government & Public Administration
Authoritative general-purpose local government units serving this area
U.S. Census Bureau GUS (2026) / GMAF
| Government Unit | Unit Type | Jurisdiction Role | Contact / Address |
|---|---|---|---|
|
GUS Population: 1,535,909 (2024)
ID: 170437
|
County | Official County Government |
Contact: MUNICIPAL LAW BUREAU CHIEF
PO BOX 6100, HAUPPAUGE NY 11788-0099
|
Education
Listing 10 local institutions (NCES 2024-2025)
External reference via K12Guides
| Institution | Type | Grades | Location |
|---|---|---|---|
| Regular School Nearby | 06-08 | SHOREHAM, NY | |
| Regular School Nearby | PK-05 | AQUEBOGUE, NY | |
| Regular School Nearby | 09-12 | CENTER MORICHES, NY | |
| Regular School Nearby | 06-08 | CENTER MORICHES, NY | |
| Regular School Nearby | KG-05 | CENTER MORICHES, NY | |
| Regular School Nearby | 03-06 | MANORVILLE, NY | |
| Regular School Nearby | PK-06 | EAST MORICHES, NY | |
| Regular School Nearby | 05-08 | EAST MORICHES, NY | |
| Regular School Nearby | KG-06 | EAST QUOGUE, NY | |
| Regular School Nearby | 03-06 | EASTPORT, NY |
Source: k12guides.com.
Community Facilities & Infrastructure
Displaying 10 civic institutions across 2 datasets queried
CMS • IPEDS • IMLS
| Facility Name | Category | Relationship | Address / Location | Contact |
|---|---|---|---|---|
|
Eastern Suffolk BOCES
|
College Vocational | 2.6 mi away | 970 North Griffing Avenue, Riverhead, NY, 11901-2763 |
6312334450
|
|
RIVERHEAD FREE LIBRARY
|
Library | 2.6 mi away | 330 COURT STREET, RIVERHEAD, NY, 11901 |
(631) 727-3228
|
|
Suffolk County Community College
|
College | 23.4 mi away | 533 College Rd, Selden, NY, 11784-2899 |
6314514110
|
|
BAITING HOLLOW FREE LIBRARY
|
Library | 6.1 mi away | 4 WARNER DRIVE, CALVERTON, NY, 11933 |
(631) 727-8765
|
|
TIGI Hairdressing Academy Guilford
|
College Vocational | 24.7 mi away | 860 Boston Post Road, Guilford, CT, 06437 |
2034583334
|
|
MATTITUCK-LAUREL LIBRARY
|
Library | 6.3 mi away | 13900 MAIN ROAD, MATTITUCK, NY, 11952 |
(631) 298-4134
|
|
HAMPTON BAYS PUBLIC LIBRARY
|
Library | 6.7 mi away | 52 PONQUOGUE AVENUE, HAMPTON BAYS, NY, 11946 |
(631) 728-6241
|
|
QUOGUE LIBRARY
|
Library | 8.0 mi away | 90 QUOGUE STREET, QUOGUE, NY, 11959 |
(631) 653-4224
|
|
WESTHAMPTON FREE LIBRARY
|
Library | 8.6 mi away | 7 LIBRARY AVENUE, WESTHAMPTON BEACH, NY, 11978 |
(631) 288-3335
|
|
CUTCHOGUE NEW SUFFOLK FREE LIBRARY
|
Library | 8.9 mi away | 27550 MAIN ROAD, CUTCHOGUE, NY, 11935 |
(631) 734-6360
|
Distances calculated from authoritative source coordinates. Source: CMS, IMLS, NCES IPEDS.
Climate & Weather Observations
NOAA Monthly Climate Normals
Observation Station: Climate data reflects NOAA 1991–2020 standard normals recorded at RIVERHEAD RSCH FARM, NY US, located 5.3 miles from ZCTA5 11931. Local microclimates, topography, and elevation may cause municipal conditions to differ.
| Month | High (°F) | Low (°F) | Mean (°F) | Precip (in) | Snow (in) |
|---|---|---|---|---|---|
| January | 39.7° | 26.0° | 32.9° | 3.79" | — |
| February | 41.3° | 26.9° | 34.1° | 3.31" | — |
| March | 48.3° | 32.7° | 40.5° | 4.72" | — |
| April | 59.8° | 41.5° | 50.7° | 4.08" | — |
| May | 70.2° | 51.0° | 60.6° | 3.60" | — |
| June | 78.6° | 60.6° | 69.6° | 3.82" | — |
| July | 83.9° | 66.9° | 75.4° | 3.05" | — |
| August | 82.3° | 66.1° | 74.2° | 3.93" | — |
| September | 75.7° | 60.2° | 68.0° | 4.07" | — |
| October | 64.9° | 49.5° | 57.2° | 4.46" | — |
| November | 54.0° | 40.0° | 47.0° | 3.81" | — |
| December | 44.9° | 31.9° | 38.4° | 4.58" | — |
Source: NOAA U.S. Climate Normals (1991–2020).
Local Weather Forecast
Weather forecast data is currently unavailable in the local cache.
Nearby Cities & Communities
Listing adjacent communities by spatial proximity (miles)
Proximity discovery
| Community Name | Classification | Distance | Population |
|---|---|---|---|
| Aquebogue CDP | CDP | 1.2 mi | — |
| Jamesport CDP | CDP | 2.8 mi | — |
| Northville CDP | CDP | 3.0 mi | — |
| Riverhead CDP | CDP | 3.1 mi | — |
| Flanders CDP | CDP | 3.2 mi | — |
| Riverside CDP | CDP | 3.2 mi | — |
Sources & Data Provenance
- Geographic Classification & Identifiers: U.S. Census Bureau Gazetteer (2026) and TIGER/Line Shapefiles. GEOID: 11931. • Official Source Dataset →
- Socioeconomic & Housing Metrics: U.S. Census Bureau American Community Survey (ACS) 5-year estimates and Population Estimates Program (PEP). Margin of Error (MOE) intervals are reported where published; suppressed values are never estimated or replaced with false zeros.
- Civic Directory Datasets: Centers for Medicare & Medicaid Services (CMS Hospital Directory), National Center for Education Statistics (NCES IPEDS Postsecondary Directory), and Institute of Museum and Library Services (IMLS Public Libraries Survey). Airport landing facilities are provided by airport-data.com.
- Weather & Climate Observations: National Oceanic and Atmospheric Administration (NOAA) U.S. Climate Normals 1991–2020 and National Weather Service (NWS) point forecasts.