What city is 11755 in?

11755 is a Lake Grove, NY mailing address. By land area, 90% lies inside Lake Grove, 6% lies inside Lake Ronkonkoma and 4% lies inside St. James.

What is the population of 11755?

About 12,144 people (±500), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 12,118.

What is the median household income in 11755?

$119,364 (±$9,370), 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 11755?

10 USPS carrier routes with 4,322 residential and 379 business mailboxes (4,701 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.

What ZIP codes are near 11755?

The closest, measured center to center: 11767 (1.7 mi, Nesconset), 11720 (2 mi, Centereach), 11779 (3.1 mi, Ronkonkoma), 11790 (3.5 mi, Stony Brook), 11784 (4 mi, Selden) and 11794 (4.3 mi, Stony Brook University).

11755 ZIP Code, Lake Grove, NY

11755 is a ZIP code in Lake Grove, New York in Suffolk County. It covers 3.3 square miles of land. The closest ZIP codes are 11767, 11720 and 11779. 12,144 people live here in 4,085 households. At about 3,715 people per square mile it has suburban density, and most homes are owner-occupied (79%). Median household income is $119,364, above the New York median of $85,974.

Quick facts

Mailing city: Lake Grove, NY
County: Suffolk County
Land area: 3.3 sq mi
Population: 12,144
Median household income: $119,364
Carrier routes: 10 (4,322 homes)

Key figures

Measure	Value
Residents	12,144
Households	4,085
Median household income	$119,364
Income per person	$50,381
Median age	40.2
Homeowners	78.5%
Median home value	$601,600
Median rent	$2,157
Bachelor's degree or higher	45.2%
Average commute (minutes)	38
Households with kids under 18	33.3%
Moved in the past year	6.3%
Below the poverty line	7.4%
Broadband internet	96.7%
Speak a non-English language at home	17.1%

Household income

% of households	Value
<$10K	5.8%
$10–15K	2.6%
$15–25K	1.5%
$25–35K	2.6%
$35–50K	11.5%
$50–75K	6.6%
$75–100K	13.5%
$100–150K	16.1%
$150–200K	12.3%
$200K+	27.5%

Age

% of all residents	Value
<10	9.3%
10–19	16.2%
20–24	7.4%
25–34	11.1%
35–44	10.2%
45–54	14.0%
55–64	14.7%
65–74	9.3%
75+	7.8%

Tenure

% of housing units	Value
Owned, with mortgage	53.3%
Owned outright	24.4%
Rented	20.8%
Vacant	1.6%

Type of building

% of housing units	Value
Detached house	80.4%
Townhome	2.8%
2–4 units	2.3%
5–19 units	10.7%
20+ units	3.8%
Mobile / other	0.0%

Businesses in 11755

413 business establishments with 5,132 employees (ZIP Codes Business Patterns 2023).

Retail Trade: 158
Construction: 45
Professional, Scientific, and Technical Services: 39
Accommodation and Food Services: 36
Health Care and Social Assistance: 30
Other Services (except Public Administration): 28
Finance and Insurance: 15
Wholesale Trade: 14

EDDM carrier routes

11755 has 10 USPS carrier routes with 4,322 residential and 379 business mailboxes. Open the EDDM route map.

Carrier routes in 11755

11755 has 10 USPS carrier routes (10 city (C)) with 4,322 residential and 379 business mailboxes. Routes range from 169 homes (C015) to 525 homes (C010); the median route has 481 homes. The Census counted 4,085 households in 11755 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per route	Routes
1–249	1
250–499	4
500–749	5
750–999	0
1,000–1,499	0
1,500+	0

Best routes in 11755 for…

Most businesses

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

Route C007 — USPS business mailboxes 227, 373 homes
Route C006 — USPS business mailboxes 105, 357 homes
Route C005 — USPS business mailboxes 31, 512 homes
Route C002 — USPS business mailboxes 9, 520 homes
Route C015 — USPS business mailboxes 5, 169 homes

Select these 5 routes on the route map

Every carrier route in 11755

Route	Type	Homes	Businesses	Est. median income	Est. owners	Est. families with kids	Est. moved in past year
C002	City	520	9	$155,036	—	—	—
C003	City	507	0	$93,984	—	—	—
C004	City	455	0	$200,001+	—	—	—
C005	City	512	31	$181,190	—	—	—
C006	City	357	105	$101,360	—	—	—
C007	City	373	227	$178,371	—	—	—
C009	City	512	1	$103,725	—	—	—
C010	City	525	0	$113,215	—	—	—
C011	City	392	1	$125,773	—	—	—
C015	City	169	5	$106,406	—	—	—

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 11755 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

11767 — Nesconset CDP, NY (1.7 mi)
11720 — Centereach CDP, NY (2 mi)
11779 — Ronkonkoma CDP, NY (3.1 mi)
11790 — Stony Brook CDP, NY (3.5 mi)
11784 — Selden CDP, NY (4 mi)
11794 — Stony Brook University CDP, NY (4.3 mi)
11738 — Farmingville CDP, NY (4.4 mi)
11749 — Islandia village, NY (4.5 mi)

Areas that include 11755

Lake Grove, NY ZIP codes — 1 ZIP code
Suffolk County ZIP codes — 108 ZIP codes
New York ZIP code data

Where it ranks

Mail every home in 11755

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) 11755, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 11755 in?: 11755 is a Lake Grove, NY mailing address. By land area, 90% lies inside Lake Grove, 6% lies inside Lake Ronkonkoma and 4% lies inside St. James.
What county is 11755 in?: 11755 is in Suffolk County.
What is the population of 11755?: About 12,144 people (±500), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 12,118.
What is the median household income in 11755?: $119,364 (±$9,370), 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 11755?: 10 USPS carrier routes with 4,322 residential and 379 business mailboxes (4,701 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 11755?: The closest, measured center to center: 11767 (1.7 mi, Nesconset), 11720 (2 mi, Centereach), 11779 (3.1 mi, Ronkonkoma), 11790 (3.5 mi, Stony Brook), 11784 (4 mi, Selden) and 11794 (4.3 mi, Stony Brook University).

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