What city is 08243 in?

08243 is a Sea Isle City, NJ mailing address. By land area, 100% lies inside Sea Isle City.

What is the population of 08243?

About 2,000 people (±231), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 2,104.

What is the median household income in 08243?

$108,359 (±$14,443), compared with $103,556 for New Jersey as a whole. Half the households in the ZIP code earn more and half earn less.

How many carrier routes and mailboxes are in 08243?

4 USPS carrier routes with 2,626 residential and 186 business mailboxes (2,812 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.

What ZIP codes are near 08243?

The closest, measured center to center: 08230 (3.5 mi, Seaville), 08248 (3.7 mi, Strathmere), 08246 (4.3 mi, South Seaville), 08202 (4.4 mi, Avalon borough, NJ), 08245 (6.8 mi, South Dennis) and 08210 (7.1 mi, Cape May Court House).

08243 ZIP Code, Sea Isle City, NJ

08243 is a ZIP code in Sea Isle City, New Jersey in Cape May County. It covers 2.2 square miles of land. The closest ZIP codes are 08230, 08248 and 08246. 2,000 people live here in 1,117 households, fewer than in most New Jersey ZIP codes. With about 907 people per square mile it is lightly settled, and most homes are owner-occupied (93%). Median household income is $108,359, close to the New Jersey median of $103,556; the median age is 66.1, older than most ZIP codes.

Quick facts

Mailing city: Sea Isle City, NJ
County: Cape May County
Land area: 2.2 sq mi
Population: 2,000
Median household income: $108,359
Carrier routes: 4 (2,626 homes)

Key figures

Measure	Value
Residents	2,000
Households	1,117
Median household income	$108,359
Income per person	$88,974
Median age	66.1
Homeowners	92.7%
Median home value	$1,087,300
Median rent	not published
Bachelor's degree or higher	48.7%
Average commute (minutes)	29.5
Households with kids under 18	9.0%
Moved in the past year	13.7%
Below the poverty line	5.4%
Broadband internet	96.4%
Speak a non-English language at home	4.0%

Household income

% of households	Value
<$10K	3.2%
$10–15K	1.4%
$15–25K	1.7%
$25–35K	4.0%
$35–50K	8.7%
$50–75K	13.6%
$75–100K	13.7%
$100–150K	20.6%
$150–200K	9.8%
$200K+	23.3%

Age

% of all residents	Value
<10	2.8%
10–19	3.8%
20–24	0.0%
25–34	3.3%
35–44	4.2%
45–54	11.3%
55–64	22.2%
65–74	29.5%
75+	23.2%

Tenure

% of housing units	Value
Owned, with mortgage	8.6%
Owned outright	6.8%
Rented	1.2%
Vacant	83.4%

Type of building

% of housing units	Value
Detached house	14.9%
Townhome	57.7%
2–4 units	12.6%
5–19 units	8.9%
20+ units	5.9%
Mobile / other	0.0%

Businesses in 08243

158 business establishments with 660 employees (ZIP Codes Business Patterns 2023).

Accommodation and Food Services: 54
Retail Trade: 27
Real Estate and Rental and Leasing: 20
Construction: 16
Arts, Entertainment, and Recreation: 9
Other Services (except Public Administration): 9
Professional, Scientific, and Technical Services: 6
Finance and Insurance: 4

EDDM carrier routes

08243 has 4 USPS carrier routes with 2,626 residential and 186 business mailboxes. Open the EDDM route map.

Carrier routes in 08243

08243 has 4 USPS carrier routes (4 city (C)) with 2,626 residential and 186 business mailboxes. Routes range from 494 homes (C003) to 865 homes (C002); the median route has 634 homes. The Census counted 1,117 households in 08243 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per route	Routes
1–249	0
250–499	1
500–749	2
750–999	1
1,000–1,499	0
1,500+	0

Best routes in 08243 for…

Most businesses

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

Route C001 — USPS business mailboxes 70, 630 homes
Route C003 — USPS business mailboxes 43, 494 homes
Route C004 — USPS business mailboxes 39, 637 homes
Route C002 — USPS business mailboxes 34, 865 homes

Select these 4 routes on the route map

Every carrier route in 08243

Route	Type	Homes	Businesses	Est. median income	Est. owners	Est. families with kids	Est. moved in past year
C001	City	630	70	$93,240	—	—	—
C002	City	865	34	$103,792	—	—	—
C003	City	494	43	$118,050	—	—	—
C004	City	637	39	$103,792	—	—	—

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 08243 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

08230 — Seaville CDP, NJ (3.5 mi)
08248 — Strathmere CDP, NJ (3.7 mi)
08246 — South Seaville CDP, NJ (4.3 mi)
08202 — Avalon borough, NJ (4.4 mi)
08245 — South Dennis CDP, NJ (6.8 mi)
08210 — Cape May Court House CDP, NJ (7.1 mi)
08223 — Beesleys Point CDP, NJ (8.5 mi)
08247 — Stone Harbor borough, NJ (8.5 mi)

Areas that include 08243

Sea Isle City, NJ ZIP codes — 1 ZIP code
Cape May County ZIP codes — 16 ZIP codes
New Jersey ZIP code data

Where it ranks

Mail every home in 08243

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) 08243, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 08243 in?: 08243 is a Sea Isle City, NJ mailing address. By land area, 100% lies inside Sea Isle City.
What county is 08243 in?: 08243 is in Cape May County.
What is the population of 08243?: About 2,000 people (±231), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 2,104.
What is the median household income in 08243?: $108,359 (±$14,443), compared with $103,556 for New Jersey as a whole. Half the households in the ZIP code earn more and half earn less.
How many carrier routes and mailboxes are in 08243?: 4 USPS carrier routes with 2,626 residential and 186 business mailboxes (2,812 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 08243?: The closest, measured center to center: 08230 (3.5 mi, Seaville), 08248 (3.7 mi, Strathmere), 08246 (4.3 mi, South Seaville), 08202 (4.4 mi, Avalon borough, NJ), 08245 (6.8 mi, South Dennis) and 08210 (7.1 mi, Cape May Court House).

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