What city is 08691 in?

08691 is a Robbinsville, NJ mailing address. By land area, 6% lies inside Yardville, 3% lies inside Robbinsville Center and 2% lies inside Hamilton Square; the rest is outside any Census-defined city or community.

What is the population of 08691?

About 16,607 people (±568), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 16,866.

What is the median household income in 08691?

$132,520 (±$16,995), 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 08691?

13 USPS carrier routes with 6,843 residential and 617 business mailboxes (7,463 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.

What ZIP codes are near 08691?

The closest, measured center to center: 08561 (2.9 mi, Windsor), 08690 (3.3 mi, Hamilton Square), 08620 (3.7 mi, Yardville), 08501 (3.9 mi, Allentown borough, NJ), 08520 (4.7 mi, Twin Rivers) and 08550 (5.1 mi, Princeton Junction).

08691 ZIP Code, Robbinsville, NJ

Q: What county is 08691 in?

08691 is mostly in Mercer County (89% of its land), with smaller parts in Monmouth County.

08691 is a ZIP code in Robbinsville, New Jersey — mostly in Mercer County (89% of its land), with smaller parts in Monmouth County. It covers 24 square miles of land. The closest ZIP codes are 08561, 08690 and 08620. 16,607 people live here in 6,859 households. With about 685 people per square mile it is lightly settled, and most homes are owner-occupied (75%). Median household income is $132,520, above the New Jersey median of $103,556.

Quick facts

Mailing city: Robbinsville, NJ
County: Mercer County
Land area: 24 sq mi
Population: 16,607
Median household income: $132,520
Carrier routes: 13 (6,843 homes)

Key figures

Measure	Value
Residents	16,607
Households	6,859
Median household income	$132,520
Income per person	$68,118
Median age	44.6
Homeowners	74.8%
Median home value	$552,000
Median rent	$1,954
Bachelor's degree or higher	65.7%
Average commute (minutes)	36
Households with kids under 18	36.0%
Moved in the past year	8.1%
Below the poverty line	4.3%
Broadband internet	93.7%
Speak a non-English language at home	30.8%

Household income

% of households	Value
<$10K	3.0%
$10–15K	1.0%
$15–25K	4.9%
$25–35K	2.3%
$35–50K	9.4%
$50–75K	9.7%
$75–100K	9.9%
$100–150K	13.6%
$150–200K	14.1%
$200K+	32.2%

Age

% of all residents	Value
<10	11.6%
10–19	14.3%
20–24	3.3%
25–34	7.1%
35–44	14.8%
45–54	17.8%
55–64	13.8%
65–74	8.9%
75+	8.4%

Tenure

% of housing units	Value
Owned, with mortgage	51.2%
Owned outright	20.8%
Rented	24.1%
Vacant	3.9%

Type of building

% of housing units	Value
Detached house	45.2%
Townhome	22.9%
2–4 units	4.2%
5–19 units	8.6%
20+ units	17.7%
Mobile / other	1.4%

Businesses in 08691

604 business establishments with 21,729 employees (ZIP Codes Business Patterns 2023).

Professional, Scientific, and Technical Services: 103
Health Care and Social Assistance: 72
Retail Trade: 63
Construction: 55
Other Services (except Public Administration): 52
Accommodation and Food Services: 44
Administrative and Support and Waste Management and Remediation Services: 42
Wholesale Trade: 37

EDDM carrier routes

08691 has 13 USPS carrier routes with 6,843 residential and 617 business mailboxes. Open the EDDM route map.

Carrier routes in 08691

08691 has 13 USPS carrier routes (2 city (C), 11 rural (R)) with 6,843 residential and 617 business mailboxes. Routes range from 197 homes (C001) to 825 homes (R010); the median route has 567 homes. The Census counted 6,859 households in 08691 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per route	Routes
1–249	1
250–499	3
500–749	8
750–999	1
1,000–1,499	0
1,500+	0

Best routes in 08691 for…

Most businesses

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

Route C001 — USPS business mailboxes 198, 197 homes
Route C021 — USPS business mailboxes 149, 513 homes
Route R022 — USPS business mailboxes 94, 416 homes
Route R024 — USPS business mailboxes 60, 613 homes
Route R018 — USPS business mailboxes 46, 567 homes

Select these 5 routes on the route map

Every carrier route in 08691

Route	Type	Homes	Businesses	Est. median income	Est. owners	Est. families with kids	Est. moved in past year
C001	City	197	198	$82,076	—	—	—
C021	City	513	149	$200,001+	—	—	—
R003	Rural	409	15	$170,515	—	—	—
R005	Rural	591	0	$200,001+	—	—	—
R010	Rural	825	2	$158,261	—	—	—
R013	Rural	504	2	$200,001+	—	—	—
R018	Rural	567	46	$82,484	—	—	—
R022	Rural	416	94	$200,001+	—	—	—
R023	Rural	634	2	$154,337	—	—	—
R024	Rural	613	60	$54,247	—	—	—
R026	Rural	625	20	$193,196	—	—	—
R030	Rural	608	7	$36,248	—	—	—
R031	Rural	341	22	$98,223	—	—	—

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 08691 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

08561 — Windsor CDP, NJ (2.9 mi)
08690 — Hamilton Square CDP, NJ (3.3 mi)
08620 — Yardville CDP, NJ (3.7 mi)
08501 — Allentown borough, NJ (3.9 mi)
08520 — Twin Rivers CDP, NJ (4.7 mi)
08550 — Princeton Junction CDP, NJ (5.1 mi)
08619 — Mercerville CDP, NJ (5.6 mi)
08610 — White Horse CDP, NJ (6.2 mi)

Areas that include 08691

Hamilton Square, NJ ZIP codes — 2 ZIP codes
Yardville, NJ ZIP codes — 2 ZIP codes
Robbinsville Center, NJ ZIP codes — 1 ZIP code
Robbinsville, NJ ZIP codes — 1 ZIP code
Mercer County ZIP codes — 23 ZIP codes
Monmouth County ZIP codes — 51 ZIP codes
New Jersey ZIP code data

Where it ranks

Mail every home in 08691

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) 08691, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 08691 in?: 08691 is a Robbinsville, NJ mailing address. By land area, 6% lies inside Yardville, 3% lies inside Robbinsville Center and 2% lies inside Hamilton Square; the rest is outside any Census-defined city or community.
What county is 08691 in?: 08691 is mostly in Mercer County (89% of its land), with smaller parts in Monmouth County.
What is the population of 08691?: About 16,607 people (±568), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 16,866.
What is the median household income in 08691?: $132,520 (±$16,995), 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 08691?: 13 USPS carrier routes with 6,843 residential and 617 business mailboxes (7,463 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 08691?: The closest, measured center to center: 08561 (2.9 mi, Windsor), 08690 (3.3 mi, Hamilton Square), 08620 (3.7 mi, Yardville), 08501 (3.9 mi, Allentown borough, NJ), 08520 (4.7 mi, Twin Rivers) and 08550 (5.1 mi, Princeton Junction).

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