What city is 08865 in?

08865 is a Phillipsburg, NJ mailing address. By land area, 8% lies inside Phillipsburg, 5% lies inside Finesville, 4% lies inside Alpha and 3% lies inside Harmony; the rest is outside any Census-defined city or community.

What is the population of 08865?

About 31,427 people (±462), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 30,537.

What is the median household income in 08865?

$79,949 (±$7,973), 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 08865?

25 USPS carrier routes with 13,384 residential and 858 business mailboxes (14,249 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.

What ZIP codes are near 08865?

The closest, measured center to center: 08886 (2.8 mi, Stewartsville), 18040 (4.9 mi, Chestnut Hill), 08804 (5 mi, Bloomsbury borough, NJ), 18063 (5.5 mi, Martins Creek), 18042 (6.1 mi, Easton) and 18085 (6.1 mi, Tatamy borough, PA).

08865 ZIP Code, Phillipsburg, NJ

08865 is a ZIP code in Phillipsburg, New Jersey in Warren County. It covers 41 square miles of land. The closest ZIP codes are 08886, 18040 and 08804. 31,427 people live here in 13,467 households. With about 758 people per square mile it is lightly settled, and owners and renters are mixed (68% own). Median household income is $79,949, below the New Jersey median of $103,556.

Quick facts

Mailing city: Phillipsburg, NJ
County: Warren County
Land area: 41 sq mi
Population: 31,427
Median household income: $79,949
Carrier routes: 25 (13,384 homes)

Key figures

Measure	Value
Residents	31,427
Households	13,467
Median household income	$79,949
Income per person	$41,700
Median age	42
Homeowners	68.4%
Median home value	$267,200
Median rent	$1,348
Bachelor's degree or higher	29.4%
Average commute (minutes)	30.1
Households with kids under 18	26.8%
Moved in the past year	11.1%
Below the poverty line	14.0%
Broadband internet	87.5%
Speak a non-English language at home	13.4%

Household income

% of households	Value
<$10K	7.3%
$10–15K	2.8%
$15–25K	7.8%
$25–35K	6.8%
$35–50K	7.4%
$50–75K	14.9%
$75–100K	12.7%
$100–150K	20.8%
$150–200K	10.7%
$200K+	8.8%

Age

% of all residents	Value
<10	11.0%
10–19	10.4%
20–24	5.2%
25–34	14.4%
35–44	13.0%
45–54	12.2%
55–64	15.1%
65–74	9.3%
75+	9.5%

Tenure

% of housing units	Value
Owned, with mortgage	41.7%
Owned outright	24.8%
Rented	29.8%
Vacant	3.7%

Type of building

% of housing units	Value
Detached house	63.7%
Townhome	12.8%
2–4 units	9.4%
5–19 units	9.1%
20+ units	4.9%
Mobile / other	0.0%

Businesses in 08865

622 business establishments with 10,532 employees (ZIP Codes Business Patterns 2023).

Health Care and Social Assistance: 103
Retail Trade: 95
Other Services (except Public Administration): 88
Accommodation and Food Services: 57
Construction: 53
Professional, Scientific, and Technical Services: 49
Manufacturing: 35
Administrative and Support and Waste Management and Remediation Services: 31

EDDM carrier routes

08865 has 25 USPS carrier routes with 13,384 residential and 858 business mailboxes. Open the EDDM route map.

Carrier routes in 08865

08865 has 25 USPS carrier routes (21 city (C), 4 rural (R)) with 13,384 residential and 858 business mailboxes. Routes range from 362 homes (R004) to 1,094 homes (C026); the median route has 501 homes. The Census counted 13,467 households in 08865 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per route	Routes
1–249	0
250–499	12
500–749	12
750–999	0
1,000–1,499	1
1,500+	0

Best routes in 08865 for…

Most businesses

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

Route C017 — USPS business mailboxes 132, 553 homes
Route R004 — USPS business mailboxes 93, 362 homes
Route C004 — USPS business mailboxes 91, 594 homes
Route C021 — USPS business mailboxes 77, 383 homes
Route C003 — USPS business mailboxes 76, 680 homes

Select these 5 routes on the route map

Every carrier route in 08865

Route	Type	Homes	Businesses	Est. median income	Est. owners	Est. families with kids	Est. moved in past year
C002	City	714	5	$75,000	—	—	—
C003	City	680	76	$22,011	—	—	—
C004	City	594	91	$22,011	—	—	—
C005	City	726	12	$76,447	—	—	—
C007	City	544	11	$86,712	—	—	—
C008	City	367	19	$107,673	—	—	—
C009	City	461	12	$97,488	—	—	—
C010	City	365	31	$97,488	—	—	—
C011	City	657	21	$89,336	—	—	—
C012	City	565	21	$99,612	—	—	—
C013	City	501	11	$86,712	—	—	—
C014	City	634	32	$34,383	—	—	—
C015	City	495	24	$97,452	—	—	—
C017	City	553	132	$75,000	—	—	—
C018	City	393	67	$97,452	—	—	—
C019	City	372	31	$100,265	—	—	—
C020	City	447	32	$88,535	—	—	—
C021	City	383	77	$97,488	—	—	—
C023	City	621	11	$75,651	—	—	—
C024	City	563	9	$107,673	—	—	—
C026	City	1,094	3	$76,384	—	—	—
R001	Rural	404	9	$71,178	—	—	—
R002	Rural	458	13	$116,065	—	—	—
R003	Rural	431	15	$122,713	—	—	—
R004	Rural	362	93	$111,570	—	—	—

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 08865 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

08886 — Stewartsville CDP, NJ (2.8 mi)
18040 — Chestnut Hill CDP, PA (4.9 mi)
08804 — Bloomsbury borough, NJ (5 mi)
18063 — Martins Creek CDP, PA (5.5 mi)
18042 — Easton city, PA (6.1 mi)
18085 — Tatamy borough, PA (6.1 mi)
08802 — Asbury CDP, NJ (6.7 mi)
18045 — Palmer Heights CDP, PA (6.8 mi)

Areas that include 08865

Phillipsburg, NJ ZIP codes — 1 ZIP code
Alpha, NJ ZIP codes — 1 ZIP code
Upper Pohatcong, NJ ZIP codes — 1 ZIP code
Delaware Park, NJ ZIP codes — 1 ZIP code
Finesville, NJ ZIP codes — 1 ZIP code
Harmony, NJ ZIP codes — 1 ZIP code
Hutchinson, NJ ZIP codes — 1 ZIP code
Brainards, NJ ZIP codes — 1 ZIP code
Warren County ZIP codes — 19 ZIP codes
New Jersey ZIP code data

Where it ranks

Mail every home in 08865

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) 08865, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 08865 in?: 08865 is a Phillipsburg, NJ mailing address. By land area, 8% lies inside Phillipsburg, 5% lies inside Finesville, 4% lies inside Alpha and 3% lies inside Harmony; the rest is outside any Census-defined city or community.
What county is 08865 in?: 08865 is in Warren County.
What is the population of 08865?: About 31,427 people (±462), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 30,537.
What is the median household income in 08865?: $79,949 (±$7,973), 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 08865?: 25 USPS carrier routes with 13,384 residential and 858 business mailboxes (14,249 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 08865?: The closest, measured center to center: 08886 (2.8 mi, Stewartsville), 18040 (4.9 mi, Chestnut Hill), 08804 (5 mi, Bloomsbury borough, NJ), 18063 (5.5 mi, Martins Creek), 18042 (6.1 mi, Easton) and 18085 (6.1 mi, Tatamy borough, PA).

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