08886 ZIP Code, Stewartsville, NJ

08886 is a ZIP code in Stewartsville, New Jersey in Warren County. It covers 15 square miles of land. The closest ZIP codes are 08804, 08865 and 08802. 6,435 people live here in 2,227 households. With about 416 people per square mile it is lightly settled, and most homes are owner-occupied (96%). Median household income is $161,168, well above the New Jersey median of $103,556.

Quick facts

Key figures

MeasureValue
Residents6,435
Households2,227
Median household income$161,168
Income per person$63,259
Median age42.8
Homeowners96.3%
Median home value$447,100
Median rent$1,840
Bachelor's degree or higher49.8%
Average commute (minutes)42.4
Households with kids under 1839.2%
Moved in the past year4.4%
Below the poverty line5.5%
Broadband internet94.3%
Speak a non-English language at home19.7%

Household income

% of householdsValue
<$10K2.4%
$10–15K0.0%
$15–25K2.5%
$25–35K3.6%
$35–50K2.6%
$50–75K8.5%
$75–100K5.5%
$100–150K21.3%
$150–200K16.9%
$200K+36.6%

Age

% of all residentsValue
<109.9%
10–1915.4%
20–246.2%
25–3410.1%
35–4410.1%
45–5416.1%
55–6418.0%
65–748.8%
75+5.3%

Tenure

% of housing unitsValue
Owned, with mortgage67.3%
Owned outright28.8%
Rented3.5%
Vacant0.4%

Type of building

% of housing unitsValue
Detached house82.1%
Townhome11.0%
2–4 units2.2%
5–19 units4.6%
20+ units0.0%
Mobile / other0.0%

Businesses in 08886

80 business establishments with 614 employees (ZIP Codes Business Patterns 2023).

EDDM carrier routes

08886 has 4 USPS carrier routes with 2,530 residential and 52 business mailboxes. Open the EDDM route map.

Carrier routes in 08886

08886 has 4 USPS carrier routes (4 rural (R)) with 2,530 residential and 52 business mailboxes. Routes range from 576 homes (R002) to 705 homes (R003); the median route has 625 homes. The Census counted 2,227 households in 08886 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per routeRoutes
1–2490
250–4990
500–7494
750–9990
1,000–1,4990
1,500+0

Best routes in 08886 for…

Most businesses

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

  1. Route R002 — USPS business mailboxes 19, 576 homes
  2. Route R004 — USPS business mailboxes 14, 628 homes
  3. Route R001 — USPS business mailboxes 10, 621 homes
  4. Route R003 — USPS business mailboxes 9, 705 homes

Select these 4 routes on the route map

Every carrier route in 08886

RouteTypeHomesBusinessesEst. median incomeEst. ownersEst. families with kidsEst. moved in past year
R001Rural62110$174,182———
R002Rural57619$121,952———
R003Rural7059$154,676———
R004Rural62814$154,676———

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 08886 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 08886

Where it ranks

Mail every home in 08886

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) 08886, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 08886 in?
08886 is a Stewartsville, NJ mailing address. By land area, 7% lies inside Stewartsville, 6% lies inside New Village, 6% lies inside Greenwich and 2% lies inside Lopatcong Overlook; the rest is outside any Census-defined city or community.
What county is 08886 in?
08886 is in Warren County.
What is the population of 08886?
About 6,435 people (±463), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 6,697.
What is the median household income in 08886?
$161,168 (±$15,248), 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 08886?
4 USPS carrier routes with 2,530 residential and 52 business mailboxes (2,582 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 08886?
The closest, measured center to center: 08804 (2.8 mi, Bloomsbury borough, NJ), 08865 (2.8 mi, Phillipsburg), 08802 (4.1 mi, Asbury), 08848 (6.5 mi, Milford borough, NJ), 07882 (6.6 mi, Brass Castle) and 08827 (7.1 mi, Hampton borough, NJ).

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