11730 ZIP Code, East Islip, NY
11730 is a ZIP code in East Islip, New York in Suffolk County. It covers 4.5 square miles of land. The closest ZIP codes are 11739, 11751 and 11752. 14,247 people live here in 4,994 households. At about 3,169 people per square mile it has suburban density, and most homes are owner-occupied (85%). Median household income is $145,652, well above the New York median of $85,974.
Quick facts
- Mailing city: East Islip, NY
- County: Suffolk County
- Land area: 4.5 sq mi
- Population: 14,247
- Median household income: $145,652
- Carrier routes: 13 (5,166 homes)
Key figures
| Measure | Value |
|---|---|
| Residents | 14,247 |
| Households | 4,994 |
| Median household income | $145,652 |
| Income per person | $62,048 |
| Median age | 43.4 |
| Homeowners | 84.7% |
| Median home value | $594,200 |
| Median rent | $2,732 |
| Bachelor's degree or higher | 43.0% |
| Average commute (minutes) | 29.7 |
| Households with kids under 18 | 30.6% |
| Moved in the past year | 8.1% |
| Below the poverty line | 4.9% |
| Broadband internet | 95.3% |
| Speak a non-English language at home | 17.2% |
Household income
| % of households | Value |
|---|---|
| <$10K | 1.5% |
| $10–15K | 1.6% |
| $15–25K | 5.5% |
| $25–35K | 4.7% |
| $35–50K | 4.7% |
| $50–75K | 9.0% |
| $75–100K | 7.1% |
| $100–150K | 18.9% |
| $150–200K | 15.0% |
| $200K+ | 32.0% |
Age
| % of all residents | Value |
|---|---|
| <10 | 8.2% |
| 10–19 | 11.8% |
| 20–24 | 5.9% |
| 25–34 | 14.9% |
| 35–44 | 11.4% |
| 45–54 | 10.4% |
| 55–64 | 16.3% |
| 65–74 | 13.3% |
| 75+ | 7.6% |
Tenure
| % of housing units | Value |
|---|---|
| Owned, with mortgage | 58.4% |
| Owned outright | 23.9% |
| Rented | 14.4% |
| Vacant | 3.3% |
Type of building
| % of housing units | Value |
|---|---|
| Detached house | 80.3% |
| Townhome | 1.3% |
| 2–4 units | 4.7% |
| 5–19 units | 4.2% |
| 20+ units | 9.6% |
| Mobile / other | 0.0% |
Businesses in 11730
418 business establishments with 3,261 employees (ZIP Codes Business Patterns 2023).
- Construction: 64
- Health Care and Social Assistance: 55
- Retail Trade: 54
- Other Services (except Public Administration): 52
- Professional, Scientific, and Technical Services: 50
- Accommodation and Food Services: 38
- Administrative and Support and Waste Management and Remediation Services: 30
- Finance and Insurance: 21
EDDM carrier routes
11730 has 13 USPS carrier routes with 5,166 residential and 299 business mailboxes. Open the EDDM route map.
Carrier routes in 11730
11730 has 13 USPS carrier routes (13 city (C)) with 5,166 residential and 299 business mailboxes. Routes range from 282 homes (C005) to 496 homes (C014); the median route has 384 homes. The Census counted 4,994 households in 11730 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.
| Homes per route | Routes |
|---|---|
| 1–249 | 0 |
| 250–499 | 13 |
| 500–749 | 0 |
| 750–999 | 0 |
| 1,000–1,499 | 0 |
| 1,500+ | 0 |
Best routes in 11730 for…
Most businesses
For B2B offers: office supplies, cleaning, IT, catering and commercial services.
- Route C005 — USPS business mailboxes 129, 282 homes
- Route C006 — USPS business mailboxes 36, 386 homes
- Route C004 — USPS business mailboxes 27, 378 homes
- Route C016 — USPS business mailboxes 26, 376 homes
- Route C009 — USPS business mailboxes 24, 367 homes
Select these 5 routes on the route map
Every carrier route in 11730
| Route | Type | Homes | Businesses | Est. median income | Est. owners | Est. families with kids | Est. moved in past year |
|---|---|---|---|---|---|---|---|
| C002 | City | 417 | 6 | $123,122 | — | — | — |
| C004 | City | 378 | 27 | $124,996 | — | — | — |
| C005 | City | 282 | 129 | $198,851 | — | — | — |
| C006 | City | 386 | 36 | $117,578 | — | — | — |
| C007 | City | 371 | 1 | $189,825 | — | — | — |
| C008 | City | 448 | 9 | $117,578 | — | — | — |
| C009 | City | 367 | 24 | $117,662 | — | — | — |
| C012 | City | 342 | 17 | $91,767 | — | — | — |
| C014 | City | 496 | 18 | $84,935 | — | — | — |
| C015 | City | 491 | 1 | $117,662 | — | — | — |
| C016 | City | 376 | 26 | $84,935 | — | — | — |
| C017 | City | 428 | 3 | $188,147 | — | — | — |
| C018 | City | 384 | 2 | $198,851 | — | — | — |
Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 11730 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
- 11739 — Great River CDP, NY (1.5 mi)
- 11751 — Islip CDP, NY (1.5 mi)
- 11752 — North Great River CDP, NY (2.2 mi)
- 11769 — Oakdale CDP, NY (3.2 mi)
- 11706 — Bay Shore CDP, NY (3.3 mi)
- 11722 — Central Islip CDP, NY (3.9 mi)
- 11718 — Brightwaters village, NY (4.1 mi)
- 11716 — Bohemia CDP, NY (4.3 mi)
Areas that include 11730
- East Islip, NY ZIP codes — 1 ZIP code
- Great River, NY ZIP codes — 2 ZIP codes
- Suffolk County ZIP codes — 108 ZIP codes
- New York ZIP code data
Mail every home in 11730
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) 11730, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.
Frequently asked questions
- What city is 11730 in?
- 11730 is a East Islip, NY mailing address. By land area, 88% lies inside East Islip and 12% lies inside Great River.
- What county is 11730 in?
- 11730 is in Suffolk County.
- What is the population of 11730?
- About 14,247 people (±1,185), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 14,523.
- What is the median household income in 11730?
- $145,652 (±$17,912), 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 11730?
- 13 USPS carrier routes with 5,166 residential and 299 business mailboxes (5,467 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
- What ZIP codes are near 11730?
- The closest, measured center to center: 11739 (1.5 mi, Great River), 11751 (1.5 mi, Islip), 11752 (2.2 mi, North Great River), 11769 (3.2 mi, Oakdale), 11706 (3.3 mi, Bay Shore) and 11722 (3.9 mi, Central Islip).
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.