11803 ZIP Code, Plainview, NY

11803 is a ZIP code in Plainview, New York in Nassau County. It covers 6.2 square miles of land. The closest ZIP codes are 11804, 11797 and 11714. 29,713 people live here in 10,237 households. At about 4,824 people per square mile it is built up to city-neighborhood density, and most homes are owner-occupied (94%). Median household income is $187,514, well above the New York median of $85,974; the median age is 46.6, older than most ZIP codes.

Quick facts

Key figures

MeasureValue
Residents29,713
Households10,237
Median household income$187,514
Income per person$78,137
Median age46.6
Homeowners93.6%
Median home value$800,200
Median rent$3,392
Bachelor's degree or higher66.8%
Average commute (minutes)35.4
Households with kids under 1834.6%
Moved in the past year4.7%
Below the poverty line3.4%
Broadband internet96.1%
Speak a non-English language at home21.7%

Household income

% of householdsValue
<$10K2.3%
$10–15K1.0%
$15–25K2.2%
$25–35K3.1%
$35–50K3.4%
$50–75K4.6%
$75–100K6.3%
$100–150K15.3%
$150–200K14.9%
$200K+46.7%

Age

% of all residentsValue
<1010.9%
10–1913.0%
20–245.4%
25–346.3%
35–4412.7%
45–5412.3%
55–6415.0%
65–7414.4%
75+9.9%

Tenure

% of housing unitsValue
Owned, with mortgage52.8%
Owned outright37.4%
Rented6.0%
Vacant3.9%

Type of building

% of housing unitsValue
Detached house86.8%
Townhome3.2%
2–4 units1.3%
5–19 units6.8%
20+ units1.8%
Mobile / other0.0%

Businesses in 11803

1,505 business establishments with 21,821 employees (ZIP Codes Business Patterns 2023).

EDDM carrier routes

11803 has 38 USPS carrier routes with 10,420 residential and 1,074 business mailboxes. Open the EDDM route map.

Carrier routes in 11803

11803 has 38 USPS carrier routes (38 city (C)) with 10,420 residential and 1,074 business mailboxes. Routes range from 134 homes (C035) to 658 homes (C052); the median route has 277 homes. The Census counted 10,237 households in 11803 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per routeRoutes
1–24910
250–49926
500–7491
750–9990
1,000–1,4990
1,500+0

Best routes in 11803 for…

Most businesses

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

  1. Route C038 — USPS business mailboxes 202, 137 homes
  2. Route C036 — USPS business mailboxes 132, 0 homes
  3. Route C035 — USPS business mailboxes 116, 134 homes
  4. Route C037 — USPS business mailboxes 99, 202 homes
  5. Route C039 — USPS business mailboxes 92, 229 homes

Select these 5 routes on the route map

Every carrier route in 11803

RouteTypeHomesBusinessesEst. median incomeEst. ownersEst. families with kidsEst. moved in past year
C001City26735$162,877———
C002City28519$161,396———
C003City3433$116,193———
C004City2740$141,466———
C005City3152$161,396———
C006City3271$179,255———
C007City3663$187,778———
C008City2624$116,193———
C009City3211$178,866———
C010City2950$195,608———
C012City2750$200,001+———
C013City2771$164,241———
C014City2950$182,671———
C015City3111$200,001+———
C017City24662$179,255———
C018City3090$134,497———
C019City17917$200,001+———
C021City32420$200,001+———
C022City2861$159,152———
C024City21667$116,193———
C025City2501$141,466———
C026City26421$200,001+———
C027City17654$165,961———
C028City2746$141,466———
C029City3010$178,866———
C031City20654$200,001+———
C033City3064$116,193———
C034City2482$200,001+———
C035City134116$200,001+———
C036City0132$200,001+———
C037City20299$139,044———
C038City137202$139,125———
C039City22992$200,001+———
C040City3123$58,231———
C042City38029$200,001+———
C050City2710$187,778———
C051City2993$162,877———
C052City65819$200,001+———

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 11803 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 11803

Where it ranks

Mail every home in 11803

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) 11803, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 11803 in?
11803 is a Plainview, NY mailing address. By land area, 91% lies inside Plainview, 5% lies inside Bethpage and 4% lies inside Old Bethpage.
What county is 11803 in?
11803 is in Nassau County.
What is the population of 11803?
About 29,713 people (±1,566), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 30,049.
What is the median household income in 11803?
$187,514 (±$15,255), 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 11803?
38 USPS carrier routes with 10,420 residential and 1,074 business mailboxes (11,488 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 11803?
The closest, measured center to center: 11804 (1.8 mi, Old Bethpage), 11797 (2.7 mi, Woodbury), 11714 (2.8 mi, Bethpage), 11801 (3 mi, Hicksville), 11747 (3.3 mi, Melville) and 11791 (3.5 mi, Syosset).

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