11777 ZIP Code, Port Jefferson, NY
11777 is a ZIP code in Port Jefferson, New York in Suffolk County. It covers 4.4 square miles of land. The closest ZIP codes are 11733, 11766 and 11776. 9,396 people live here in 3,701 households. At about 2,139 people per square mile it has suburban density, and most homes are owner-occupied (75%). Median household income is $150,505, well above the New York median of $85,974.
Quick facts
- Mailing city: Port Jefferson, NY
- County: Suffolk County
- Land area: 4.4 sq mi
- Population: 9,396
- Median household income: $150,505
- Carrier routes: 11 (3,999 homes)
Key figures
| Measure | Value |
|---|---|
| Residents | 9,396 |
| Households | 3,701 |
| Median household income | $150,505 |
| Income per person | $77,822 |
| Median age | 44.9 |
| Homeowners | 74.8% |
| Median home value | $680,200 |
| Median rent | $2,359 |
| Bachelor's degree or higher | 68.0% |
| Average commute (minutes) | 31.6 |
| Households with kids under 18 | 24.2% |
| Moved in the past year | 8.1% |
| Below the poverty line | 5.1% |
| Broadband internet | 96.4% |
| Speak a non-English language at home | 18.2% |
Household income
| % of households | Value |
|---|---|
| <$10K | 1.0% |
| $10–15K | 1.0% |
| $15–25K | 1.1% |
| $25–35K | 3.2% |
| $35–50K | 5.7% |
| $50–75K | 10.9% |
| $75–100K | 12.0% |
| $100–150K | 14.9% |
| $150–200K | 12.2% |
| $200K+ | 38.0% |
Age
| % of all residents | Value |
|---|---|
| <10 | 7.8% |
| 10–19 | 13.2% |
| 20–24 | 6.5% |
| 25–34 | 11.2% |
| 35–44 | 11.6% |
| 45–54 | 13.2% |
| 55–64 | 13.1% |
| 65–74 | 13.3% |
| 75+ | 10.3% |
Tenure
| % of housing units | Value |
|---|---|
| Owned, with mortgage | 41.9% |
| Owned outright | 27.8% |
| Rented | 22.0% |
| Vacant | 8.4% |
Type of building
| % of housing units | Value |
|---|---|
| Detached house | 69.4% |
| Townhome | 10.4% |
| 2–4 units | 7.9% |
| 5–19 units | 8.0% |
| 20+ units | 4.4% |
| Mobile / other | 0.0% |
Businesses in 11777
454 business establishments with 7,308 employees (ZIP Codes Business Patterns 2023).
- Health Care and Social Assistance: 92
- Professional, Scientific, and Technical Services: 77
- Accommodation and Food Services: 52
- Construction: 38
- Other Services (except Public Administration): 36
- Retail Trade: 30
- Administrative and Support and Waste Management and Remediation Services: 29
- Finance and Insurance: 27
EDDM carrier routes
11777 has 11 USPS carrier routes with 3,999 residential and 406 business mailboxes. Open the EDDM route map.
Carrier routes in 11777
11777 has 11 USPS carrier routes (11 city (C)) with 3,999 residential and 406 business mailboxes. Routes range from 196 homes (C005) to 512 homes (C026); the median route has 364 homes. The Census counted 3,701 households in 11777 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.
| Homes per route | Routes |
|---|---|
| 1–249 | 1 |
| 250–499 | 9 |
| 500–749 | 1 |
| 750–999 | 0 |
| 1,000–1,499 | 0 |
| 1,500+ | 0 |
Best routes in 11777 for…
Most businesses
For B2B offers: office supplies, cleaning, IT, catering and commercial services.
- Route C017 — USPS business mailboxes 98, 415 homes
- Route C012 — USPS business mailboxes 74, 404 homes
- Route C014 — USPS business mailboxes 70, 453 homes
- Route C006 — USPS business mailboxes 65, 341 homes
- Route C026 — USPS business mailboxes 37, 512 homes
Select these 5 routes on the route map
Every carrier route in 11777
| Route | Type | Homes | Businesses | Est. median income | Est. owners | Est. families with kids | Est. moved in past year |
|---|---|---|---|---|---|---|---|
| C005 | City | 196 | 0 | $110,642 | — | — | — |
| C006 | City | 341 | 65 | $105,948 | — | — | — |
| C007 | City | 300 | 29 | $105,948 | — | — | — |
| C009 | City | 410 | 0 | $142,575 | — | — | — |
| C012 | City | 404 | 74 | $124,778 | — | — | — |
| C014 | City | 453 | 70 | $105,948 | — | — | — |
| C017 | City | 415 | 98 | $124,778 | — | — | — |
| C020 | City | 364 | 16 | $124,778 | — | — | — |
| C024 | City | 303 | 4 | $200,001+ | — | — | — |
| C026 | City | 512 | 37 | $124,778 | — | — | — |
| C030 | City | 301 | 13 | $124,778 | — | — | — |
Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 11777 on the EDDM route map.
How route demographics are estimated
Mailbox counts come from USPS; demographics are estimates
The number of homes and businesses on each carrier route is the current USPS EDDM count. The Census Bureau does not publish figures for carrier routes, so income, homeownership, ages, families, movers and housing age on a route are EDDM2GO estimates built from Census block groups (neighborhood areas of roughly 600 to 3,000 people).
How a route gets its figures: the block-group length-share method
We trace each route's streets every 25 meters and record which block group each stretch falls in. The route's homes are spread along its streets in proportion to length, so a route with 60% of its street length in one block group is assumed to have 60% of its homes there. Each block group then contributes its Census counts in proportion to the share of its housing units that sit on the route (capped at the whole block group). Medians are recalculated from the combined income, home-value and age brackets, the way the Census Bureau computes them, not averaged.
Margins of error
Census survey figures carry a margin of error at 90% confidence; we carry it through the calculation and show it as ±. Our margins treat the route-to-block-group split as exact, so the real uncertainty is larger. Routes with fewer than 100 estimated households, large margins, or streets we could not place are flagged.
Different years
USPS mailbox counts are current. Census figures are 5-year averages for 2020–2024, so a new subdivision may have more homes on the route today than the Census counted. Use the route figures to compare routes with each other, not as an exact head count.
Why some routes show identical figures
Two routes that run through the same block group get the same percentages and medians, because the Census publishes one set of figures for the whole block group. Their mailbox counts still differ, and those are exact.
Route and mailbox counts: USPS EDDM route data. Route demographics: EDDM2GO estimates from U.S. Census Bureau American Community Survey 5-year block-group data (2020–2024) and 2024 cartographic block-group boundaries. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.
Nearby ZIP codes
- 11733 — East Setauket CDP, NY (2.6 mi)
- 11766 — Mount Sinai CDP, NY (2.8 mi)
- 11776 — Terryville CDP, NY (3.1 mi)
- 11794 — Stony Brook University CDP, NY (4 mi)
- 11790 — Stony Brook CDP, NY (4.6 mi)
- 11789 — Sound Beach CDP, NY (5 mi)
- 11764 — Miller Place CDP, NY (5.2 mi)
- 11720 — Centereach CDP, NY (6 mi)
Areas that include 11777
- Port Jefferson, NY ZIP codes — 1 ZIP code
- Belle Terre, NY ZIP codes — 1 ZIP code
- Suffolk County ZIP codes — 108 ZIP codes
- New York ZIP code data
Mail every home in 11777
Route counts on this page price as Full Service 6.5 × 9 postcards: we print, bundle by carrier route and hand the mailing to USPS. Prefer to take it to the Post Office yourself? Print only costs less and you pay postage at drop-off.
EDDM guides
ZIP code statistics describe the Census ZIP Code Tabulation Area (ZCTA) 11777, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.
Frequently asked questions
- What city is 11777 in?
- 11777 is a Port Jefferson, NY mailing address. By land area, 70% lies inside Port Jefferson, 20% lies inside Belle Terre, 4% lies inside East Setauket and 1% lies inside Mount Sinai; the rest is outside any Census-defined city or community.
- What county is 11777 in?
- 11777 is in Suffolk County.
- What is the population of 11777?
- About 9,396 people (±330), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 9,346.
- What is the median household income in 11777?
- $150,505 (±$19,398), compared with $85,974 for New York as a whole. Half the households in the ZIP code earn more and half earn less.
- How many carrier routes and mailboxes are in 11777?
- 11 USPS carrier routes with 3,999 residential and 406 business mailboxes (4,405 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
- What ZIP codes are near 11777?
- The closest, measured center to center: 11733 (2.6 mi, East Setauket), 11766 (2.8 mi, Mount Sinai), 11776 (3.1 mi, Terryville), 11794 (4 mi, Stony Brook University), 11790 (4.6 mi, Stony Brook) and 11789 (5 mi, Sound Beach).
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.