What city is 08512 in?

08512 is a Cranbury, NJ mailing address. By land area, 5% lies inside Cranbury and 2% lies inside Princeton Meadows; the rest is outside any Census-defined city or community.

What is the population of 08512?

About 12,928 people (±1,083), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 12,897.

What is the median household income in 08512?

$118,587 (±$12,155), 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 08512?

10 USPS carrier routes with 5,035 residential and 534 business mailboxes (5,580 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.

What ZIP codes are near 08512?

The closest, measured center to center: 08536 (3.3 mi, Princeton Meadows), 08810 (3.5 mi, Dayton), 08520 (4.6 mi, Twin Rivers), 08852 (4.6 mi, Monmouth Junction), 08831 (4.9 mi, Jamesburg borough, NJ) and 08550 (5.9 mi, Princeton Junction).

08512 ZIP Code, Cranbury, NJ

Q: What county is 08512 in?

08512 is mostly in Middlesex County (93% of its land), with smaller parts in Mercer County.

08512 is a ZIP code in Cranbury, New Jersey — mostly in Middlesex County (93% of its land), with smaller parts in Mercer County. It covers 23 square miles of land. The closest ZIP codes are 08536, 08810 and 08520. 12,928 people live here in 5,102 households. With about 567 people per square mile it is lightly settled, and owners and renters are mixed (57% own). Median household income is $118,587, above the New Jersey median of $103,556; the median age is 48.9, older than most ZIP codes.

Quick facts

Mailing city: Cranbury, NJ
County: Middlesex County
Land area: 23 sq mi
Population: 12,928
Median household income: $118,587
Carrier routes: 10 (5,035 homes)

Key figures

Measure	Value
Residents	12,928
Households	5,102
Median household income	$118,587
Income per person	$68,922
Median age	48.9
Homeowners	57.5%
Median home value	$659,400
Median rent	$1,594
Bachelor's degree or higher	54.5%
Average commute (minutes)	30.8
Households with kids under 18	25.5%
Moved in the past year	8.2%
Below the poverty line	6.4%
Broadband internet	93.1%
Speak a non-English language at home	42.2%

Household income

% of households	Value
<$10K	0.7%
$10–15K	2.8%
$15–25K	4.9%
$25–35K	3.7%
$35–50K	10.4%
$50–75K	15.1%
$75–100K	6.5%
$100–150K	15.9%
$150–200K	10.4%
$200K+	29.5%

Age

% of all residents	Value
<10	8.4%
10–19	11.8%
20–24	5.3%
25–34	8.7%
35–44	11.5%
45–54	13.4%
55–64	18.5%
65–74	11.4%
75+	10.9%

Tenure

% of housing units	Value
Owned, with mortgage	31.4%
Owned outright	25.5%
Rented	41.8%
Vacant	1.3%

Type of building

% of housing units	Value
Detached house	42.2%
Townhome	8.5%
2–4 units	4.6%
5–19 units	34.1%
20+ units	9.7%
Mobile / other	1.0%

Businesses in 08512

518 business establishments with 19,234 employees (ZIP Codes Business Patterns 2023).

Professional, Scientific, and Technical Services: 131
Wholesale Trade: 81
Transportation and Warehousing: 57
Administrative and Support and Waste Management and Remediation Services: 36
Manufacturing: 33
Construction: 32
Health Care and Social Assistance: 25
Retail Trade: 24

EDDM carrier routes

08512 has 10 USPS carrier routes with 5,035 residential and 534 business mailboxes. Open the EDDM route map.

Carrier routes in 08512

08512 has 10 USPS carrier routes (6 city (C), 4 rural (R)) with 5,035 residential and 534 business mailboxes. Routes range from 263 homes (R090) to 1,008 homes (C015); the median route has 350 homes. The Census counted 5,102 households in 08512 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per route	Routes
1–249	0
250–499	6
500–749	1
750–999	2
1,000–1,499	1
1,500+	0

Best routes in 08512 for…

Most businesses

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

Route R090 — USPS business mailboxes 142, 263 homes
Route R091 — USPS business mailboxes 91, 307 homes
Route R092 — USPS business mailboxes 91, 299 homes
Route R093 — USPS business mailboxes 87, 345 homes
Route C001 — USPS business mailboxes 59, 355 homes

Select these 5 routes on the route map

Every carrier route in 08512

Route	Type	Homes	Businesses	Est. median income	Est. owners	Est. families with kids	Est. moved in past year
C001	City	355	59	$200,001+	—	—	—
C002	City	577	18	$200,001+	—	—	—
C004	City	763	1	$187,492	—	—	—
C013	City	777	5	$105,601	—	—	—
C015	City	1,008	3	$187,492	—	—	—
C016	City	341	37	$187,492	—	—	—
R090	Rural	263	142	$187,492	—	—	—
R091	Rural	307	91	$187,492	—	—	—
R092	Rural	299	91	$187,492	—	—	—
R093	Rural	345	87	$200,001+	—	—	—

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 08512 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

08536 — Princeton Meadows CDP, NJ (3.3 mi)
08810 — Dayton CDP, NJ (3.5 mi)
08520 — Twin Rivers CDP, NJ (4.6 mi)
08852 — Monmouth Junction CDP, NJ (4.6 mi)
08831 — Jamesburg borough, NJ (4.9 mi)
08550 — Princeton Junction CDP, NJ (5.9 mi)
08561 — Windsor CDP, NJ (6.1 mi)
08828 — Helmetta borough, NJ (6.5 mi)

Areas that include 08512

Princeton Meadows, NJ ZIP codes — 2 ZIP codes
Cranbury, 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 08512

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) 08512, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 08512 in?: 08512 is a Cranbury, NJ mailing address. By land area, 5% lies inside Cranbury and 2% lies inside Princeton Meadows; the rest is outside any Census-defined city or community.
What county is 08512 in?: 08512 is mostly in Middlesex County (93% of its land), with smaller parts in Mercer County.
What is the population of 08512?: About 12,928 people (±1,083), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 12,897.
What is the median household income in 08512?: $118,587 (±$12,155), 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 08512?: 10 USPS carrier routes with 5,035 residential and 534 business mailboxes (5,580 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 08512?: The closest, measured center to center: 08536 (3.3 mi, Princeton Meadows), 08810 (3.5 mi, Dayton), 08520 (4.6 mi, Twin Rivers), 08852 (4.6 mi, Monmouth Junction), 08831 (4.9 mi, Jamesburg borough, NJ) and 08550 (5.9 mi, Princeton Junction).

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