ZIP code · Jamesport · New York · United States
ZIP code 11947 — Jamesport
ZIP code 11947 serves Jamesport, New York.
- Postal code
- 11947Single source Value from one source, not cross-checked.
- City
- Jamesport
- County
- Suffolk FIPS 36103
- State
- New York
- Country
- United States
- Coordinates
- 40.9495, -72.5815 — precision precise (locality)
View on OpenStreetMap - Population
- 248 (ZCTA, ACS 5-year)
- Population density
- 7,137 / sq mi
- Land area
- 0 sq mi (0.1 km²) (ZCTA, ACS 5-year)
- Per-capita income
- $80,267
- Median age
- 51.4
- Households
- 100
- Housing units
- 100
- Congressional district
- NY-1 (119th Congress)
- Time zone
- America/New_York (UTC−5 / UTC−4 DST)
Tools: compare 11947 with another ZIP · ZIPs within 25 miles · distance from 11947
Map of ZIP code 11947
Climate — monthly normals
Warmest month Jul (avg high 82°F), coldest Jan (avg low 23°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 38 | 40 | 47 | 57 | 67 | 75 | 82 | 81 | 74 | 64 | 53 | 43 |
| Avg low °F | 23 | 24 | 30 | 39 | 48 | 59 | 65 | 64 | 57 | 46 | 36 | 28 |
| Precip in | 3.6 | 3.1 | 4.3 | 4.1 | 3.5 | 3.8 | 3.1 | 4.1 | 3.8 | 4.0 | 3.5 | 4.3 |
NOAA 1991–2020 climate normals from the nearest station: MATTITUCK (4.6 mi) · NOAA NCEI
About this page
US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.
GeoNames · U.S. Census Bureau (ACS) · U.S. Census Bureau · NOAA NCEI. Data generated on 2026-08-21. Methodology · Report an error on this page