What city is 08830 in?

08830 is a Iselin, NJ mailing address. By land area, 100% lies inside Iselin.

What is the population of 08830?

About 19,551 people (±1,646), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 20,088.

What is the median household income in 08830?

$109,500 (±$12,970), 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 08830?

17 USPS carrier routes with 7,014 residential and 688 business mailboxes (7,725 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.

What ZIP codes are near 08830?

The closest, measured center to center: 07067 (1.4 mi, Colonia), 07095 (2 mi, Woodbridge), 08863 (2.3 mi, Fords), 07001 (2.6 mi, Avenel), 08820 (2.6 mi, South Plainfield borough, NJ) and 08840 (2.9 mi, Metuchen borough, NJ).

08830 ZIP Code, Iselin, NJ

08830 is a ZIP code in Iselin, New Jersey in Middlesex County. It covers 3.2 square miles of land. The closest ZIP codes are 07067, 07095 and 08863. 19,551 people live here in 6,512 households. At about 6,183 people per square mile it is built up to city-neighborhood density, and owners and renters are mixed (65% own). Median household income is $109,500, close to the New Jersey median of $103,556.

Quick facts

Mailing city: Iselin, NJ
County: Middlesex County
Land area: 3.2 sq mi
Population: 19,551
Median household income: $109,500
Carrier routes: 17 (7,014 homes)

Key figures

Measure	Value
Residents	19,551
Households	6,512
Median household income	$109,500
Income per person	$45,254
Median age	38.5
Homeowners	65.3%
Median home value	$426,800
Median rent	$2,113
Bachelor's degree or higher	53.7%
Average commute (minutes)	34.5
Households with kids under 18	38.2%
Moved in the past year	13.1%
Below the poverty line	7.9%
Broadband internet	95.6%
Speak a non-English language at home	60.6%

Household income

% of households	Value
<$10K	3.5%
$10–15K	2.2%
$15–25K	3.7%
$25–35K	2.6%
$35–50K	5.6%
$50–75K	11.2%
$75–100K	14.8%
$100–150K	21.3%
$150–200K	15.0%
$200K+	20.1%

Age

% of all residents	Value
<10	11.8%
10–19	12.7%
20–24	5.2%
25–34	14.5%
35–44	14.7%
45–54	11.5%
55–64	13.5%
65–74	10.4%
75+	5.7%

Tenure

% of housing units	Value
Owned, with mortgage	40.9%
Owned outright	23.1%
Rented	32.8%
Vacant	3.3%

Type of building

% of housing units	Value
Detached house	69.0%
Townhome	2.8%
2–4 units	1.5%
5–19 units	13.9%
20+ units	12.7%
Mobile / other	0.0%

Businesses in 08830

789 business establishments with 21,378 employees (ZIP Codes Business Patterns 2023).

Professional, Scientific, and Technical Services: 262
Retail Trade: 85
Finance and Insurance: 67
Accommodation and Food Services: 59
Health Care and Social Assistance: 46
Other Services (except Public Administration): 45
Transportation and Warehousing: 41
Administrative and Support and Waste Management and Remediation Services: 41

EDDM carrier routes

08830 has 17 USPS carrier routes with 7,014 residential and 688 business mailboxes. Open the EDDM route map.

Carrier routes in 08830

08830 has 17 USPS carrier routes (17 city (C)) with 7,014 residential and 688 business mailboxes. Routes range from 62 homes (C020) to 810 homes (C015); the median route has 405 homes. The Census counted 6,512 households in 08830 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per route	Routes
1–249	2
250–499	13
500–749	0
750–999	2
1,000–1,499	0
1,500+	0

Best routes in 08830 for…

Most businesses

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

Route C020 — USPS business mailboxes 180, 62 homes
Route C014 — USPS business mailboxes 113, 348 homes
Route C018 — USPS business mailboxes 72, 241 homes
Route C017 — USPS business mailboxes 64, 415 homes
Route C019 — USPS business mailboxes 59, 417 homes

Select these 5 routes on the route map

Every carrier route in 08830

Route	Type	Homes	Businesses	Est. median income	Est. owners	Est. families with kids	Est. moved in past year
C001	City	376	42	$144,172	—	—	—
C002	City	420	15	$200,001+	—	—	—
C003	City	405	1	$53,455	—	—	—
C004	City	350	44	$175,252	—	—	—
C005	City	388	1	$93,495	—	—	—
C007	City	410	1	$112,494	—	—	—
C008	City	390	1	$93,542	—	—	—
C010	City	414	23	$83,653	—	—	—
C012	City	779	31	$53,455	—	—	—
C013	City	428	15	$91,651	—	—	—
C014	City	348	113	$91,651	—	—	—
C015	City	810	19	$121,371	—	—	—
C016	City	361	7	$53,455	—	—	—
C017	City	415	64	$121,371	—	—	—
C018	City	241	72	$121,371	—	—	—
C019	City	417	59	$121,371	—	—	—
C020	City	62	180	$123,381	—	—	—

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 08830 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

07067 — Colonia CDP, NJ (1.4 mi)
07095 — Woodbridge CDP, NJ (2 mi)
08863 — Fords CDP, NJ (2.3 mi)
07001 — Avenel CDP, NJ (2.6 mi)
08820 — South Plainfield borough, NJ (2.6 mi)
08840 — Metuchen borough, NJ (2.9 mi)
07065 — Rahway city, NJ (3.2 mi)
07066 — Westfield town, NJ (3.5 mi)

Areas that include 08830

Iselin, NJ ZIP codes — 1 ZIP code
Middlesex County ZIP codes — 40 ZIP codes
New Jersey ZIP code data

Where it ranks

Mail every home in 08830

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) 08830, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 08830 in?: 08830 is a Iselin, NJ mailing address. By land area, 100% lies inside Iselin.
What county is 08830 in?: 08830 is in Middlesex County.
What is the population of 08830?: About 19,551 people (±1,646), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 20,088.
What is the median household income in 08830?: $109,500 (±$12,970), 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 08830?: 17 USPS carrier routes with 7,014 residential and 688 business mailboxes (7,725 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 08830?: The closest, measured center to center: 07067 (1.4 mi, Colonia), 07095 (2 mi, Woodbridge), 08863 (2.3 mi, Fords), 07001 (2.6 mi, Avenel), 08820 (2.6 mi, South Plainfield borough, NJ) and 08840 (2.9 mi, Metuchen borough, NJ).

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