11733 ZIP Code, East Setauket, NY

11733 is a ZIP code in East Setauket, New York in Suffolk County. It covers 12 square miles of land. The closest ZIP codes are 11794, 11790 and 11777. 17,752 people live here in 6,137 households. At about 1,512 people per square mile it has suburban density, and most homes are owner-occupied (85%). Median household income is $173,281, well above the New York median of $85,974.

Quick facts

Key figures

MeasureValue
Residents17,752
Households6,137
Median household income$173,281
Income per person$80,855
Median age44.8
Homeowners85.0%
Median home value$683,400
Median rent$2,411
Bachelor's degree or higher62.2%
Average commute (minutes)29
Households with kids under 1835.0%
Moved in the past year7.7%
Below the poverty line4.9%
Broadband internet97.6%
Speak a non-English language at home13.8%

Household income

% of householdsValue
<$10K1.7%
$10–15K1.5%
$15–25K2.3%
$25–35K4.4%
$35–50K3.9%
$50–75K6.4%
$75–100K7.9%
$100–150K14.8%
$150–200K13.6%
$200K+43.4%

Age

% of all residentsValue
<109.9%
10–1914.5%
20–246.3%
25–349.4%
35–4410.2%
45–5413.3%
55–6415.3%
65–7412.4%
75+8.8%

Tenure

% of housing unitsValue
Owned, with mortgage46.6%
Owned outright32.3%
Rented13.6%
Vacant7.5%

Type of building

% of housing unitsValue
Detached house86.2%
Townhome6.6%
2–4 units1.4%
5–19 units3.2%
20+ units0.7%
Mobile / other1.9%

Businesses in 11733

665 business establishments with 5,672 employees (ZIP Codes Business Patterns 2023).

EDDM carrier routes

11733 has 15 USPS carrier routes with 6,129 residential and 512 business mailboxes. Open the EDDM route map.

Carrier routes in 11733

11733 has 15 USPS carrier routes (15 city (C)) with 6,129 residential and 512 business mailboxes. Routes range from 82 homes (C015) to 559 homes (C017); the median route has 438 homes. The Census counted 6,137 households in 11733 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per routeRoutes
1–2491
250–49912
500–7492
750–9990
1,000–1,4990
1,500+0

Best routes in 11733 for…

Most businesses

For B2B offers: office supplies, cleaning, IT, catering and commercial services.

  1. Route C015 — USPS business mailboxes 138, 82 homes
  2. Route C012 — USPS business mailboxes 84, 348 homes
  3. Route C013 — USPS business mailboxes 81, 313 homes
  4. Route C021 — USPS business mailboxes 76, 339 homes
  5. Route C017 — USPS business mailboxes 43, 559 homes

Select these 5 routes on the route map

Every carrier route in 11733

RouteTypeHomesBusinessesEst. median incomeEst. ownersEst. families with kidsEst. moved in past year
C002City48129$82,887———
C003City5416$173,877———
C004City4601$200,001+———
C005City49711$169,779———
C006City4142$173,731———
C007City4643$200,001+———
C009City43812$200,000+———
C010City4421$200,001+———
C011City35024$190,185———
C012City34884$190,185———
C013City31381$200,001+———
C015City82138$109,916———
C017City55943$109,916———
C020City4011$200,001+———
C021City33976$200,001+———

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 11733 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

Areas that include 11733

Where it ranks

Mail every home in 11733

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) 11733, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 11733 in?
11733 is a East Setauket, NY mailing address. By land area, 48% lies inside East Setauket, 20% lies inside Setauket, 18% lies inside Old Field and 6% lies inside Port Jefferson Station.
What county is 11733 in?
11733 is in Suffolk County.
What is the population of 11733?
About 17,752 people (±1,198), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 17,967.
What is the median household income in 11733?
$173,281 (±$23,624), 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 11733?
15 USPS carrier routes with 6,129 residential and 512 business mailboxes (6,642 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 11733?
The closest, measured center to center: 11794 (1.6 mi, Stony Brook University), 11790 (2.4 mi, Stony Brook), 11777 (2.6 mi, Port Jefferson), 11780 (3.7 mi, St. James), 11776 (4 mi, Terryville) and 11766 (4.9 mi, Mount Sinai).

This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.