ZIP code 11791
Where is ZIP code 11791?
Syosset, New York
Nassau County · Standard ZIP code
ZIP code 11791 belongs to Syosset, New York in Nassau County. 11791 is a standard ZIP code, so it covers street addresses as well as PO Boxes. It is in the Eastern Time zone and uses area codes 363, 516, 631 and 934. About 25,520 people live in the 11791 area, where the median household income is $202,962. The closest ZIP codes are 11773 (Melville, 0.8 mi north), 11797 (Woodbury, 1.6 mi east) and 11753 (Jericho, 2.4 mi southwest).
| ZIP code | 11791 |
|---|---|
| Type | Standard ZIP code for street addresses and PO Boxes |
| Status | Active |
| City | Syosset |
| State | New York (NY) |
| County | Nassau County |
| Time zone | Eastern Time · now |
| Area codes | 363, 516, 631, 934 |
| Coordinates | 40.8146, -73.5024 map |
| 3-digit prefix | 117 |
Population and income in 11791
| Population | 25,520 · higher than 85% of New York ZIP codes |
|---|---|
| People per square mile | 2,039 · higher than 75% of New York ZIP codes |
| Median age | 43.2 years · lower than 52% of New York ZIP codes |
| Men / women | 50% / 50% |
| Median household income | $202,962 · higher than 98% of New York ZIP codes |
| Income per person | $88,245 |
| Below the poverty line | 4.1% |
| Bachelor’s degree or higher | 70% of adults 25+ |
| Median home value | $937,700 · higher than 94% of New York ZIP codes |
| Median rent | $3,019 a month |
| Housing units | 8,322 |
| Households | 8,113 (3.11 people on average) |
| Owners / renters | 94% / 6.5% |
| Land area | 12.51 sq mi (plus 0.28 sq mi of water) |
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024) for ZIP Code Tabulation Area 11791. Census ZIP areas are close to, but not exactly the same as, USPS delivery areas.
ZIP codes near 11791
| ZIP code | City | Distance | Type |
|---|---|---|---|
| 11773 | Melville, NY | 0.8 mi N | Unique |
| 11797 | Woodbury, NY | 1.6 mi E | Standard |
| 11753 | Jericho, NY | 2.4 mi SW | Standard |
| 11853 | Jericho, NY | 2.5 mi SW | Unique |
| 11803 | Plainview, NY | 2.7 mi SE | Standard |
| 11732 | East Norwich, NY | 2.8 mi NW | Standard |
| 11802 | Hicksville, NY | 3.4 mi S | PO Box only |
| 11801 | Hicksville, NY | 3.8 mi S | Standard |
| 11771 | Oyster Bay, NY | 3.8 mi N | Standard |
| 11804 | Old Bethpage, NY | 4.2 mi SE | Standard |
| 11724 | Cold Spring Harbor, NY | 4.4 mi NE | Standard |
| 11760 | Melville, NY | 4.8 mi E | PO Box only |
Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 11791 or measure the distance to another ZIP code.
How to address mail to 11791
123 MAIN ST
SYOSSET NY 11791
Put the city, the two-letter state code and the ZIP code on the last line. Avoid Laurel Hollow, Muttontown and Oyster Bay Cove: USPS doesn’t recognize them as the city for this ZIP code. Adding the 4-digit ZIP+4 code (11791-XXXX) helps mail sort faster but isn’t required.
Questions
- What city is ZIP code 11791?
- 11791 is a Syosset, New York ZIP code.
- What county is 11791 in?
- ZIP code 11791 is in Nassau County, New York.
- What time zone is ZIP code 11791 in?
- 11791 is in the Eastern Time zone (America/New_York).
- What area code is 11791?
- Phone numbers in ZIP code 11791 use area codes 363, 516, 631 and 934.
- What is the population of ZIP code 11791?
- About 25,520 people live in ZIP code 11791, according to the Census Bureau’s American Community Survey (2020–2024).
- What is the median income in 11791?
- The median household income in 11791 is $202,962 a year, higher than 98% of New York ZIP codes.
- What ZIP codes are near 11791?
- The nearest ZIP codes to 11791 are 11773 (Melville, 0.8 miles), 11797 (Woodbury, 1.6 miles), 11753 (Jericho, 2.4 miles) and 11853 (Jericho, 2.5 miles).