08840 ZIP Code, Metuchen, NJ
08840 is a ZIP code in Metuchen, New Jersey in Middlesex County. It covers 3.2 square miles of land. The closest ZIP codes are 08837, 08820 and 08863. 18,206 people live here in 6,378 households. At about 5,675 people per square mile it is built up to city-neighborhood density, and most homes are owner-occupied (76%). Median household income is $146,635, above the New Jersey median of $103,556.
Quick facts
- Mailing city: Metuchen, NJ
- County: Middlesex County
- Land area: 3.2 sq mi
- Population: 18,206
- Median household income: $146,635
- Carrier routes: 18 (6,986 homes)
Key figures
| Measure | Value |
|---|---|
| Residents | 18,206 |
| Households | 6,378 |
| Median household income | $146,635 |
| Income per person | $65,960 |
| Median age | 39.2 |
| Homeowners | 76.3% |
| Median home value | $560,100 |
| Median rent | $2,058 |
| Bachelor's degree or higher | 62.2% |
| Average commute (minutes) | 36.4 |
| Households with kids under 18 | 36.6% |
| Moved in the past year | 7.0% |
| Below the poverty line | 3.9% |
| Broadband internet | 97.4% |
| Speak a non-English language at home | 28.7% |
Household income
| % of households | Value |
|---|---|
| <$10K | 3.5% |
| $10–15K | 1.2% |
| $15–25K | 1.9% |
| $25–35K | 2.9% |
| $35–50K | 3.9% |
| $50–75K | 11.0% |
| $75–100K | 9.7% |
| $100–150K | 16.6% |
| $150–200K | 16.1% |
| $200K+ | 33.2% |
Age
| % of all residents | Value |
|---|---|
| <10 | 13.9% |
| 10–19 | 13.9% |
| 20–24 | 3.6% |
| 25–34 | 11.1% |
| 35–44 | 15.9% |
| 45–54 | 13.7% |
| 55–64 | 12.3% |
| 65–74 | 10.2% |
| 75+ | 5.3% |
Tenure
| % of housing units | Value |
|---|---|
| Owned, with mortgage | 50.1% |
| Owned outright | 24.1% |
| Rented | 22.8% |
| Vacant | 3.1% |
Type of building
| % of housing units | Value |
|---|---|
| Detached house | 69.0% |
| Townhome | 9.5% |
| 2–4 units | 5.6% |
| 5–19 units | 7.0% |
| 20+ units | 8.9% |
| Mobile / other | 0.0% |
Businesses in 08840
605 business establishments with 5,838 employees (ZIP Codes Business Patterns 2023).
- Professional, Scientific, and Technical Services: 122
- Health Care and Social Assistance: 103
- Other Services (except Public Administration): 76
- Retail Trade: 60
- Accommodation and Food Services: 46
- Finance and Insurance: 33
- Construction: 28
- Administrative and Support and Waste Management and Remediation Services: 27
EDDM carrier routes
08840 has 18 USPS carrier routes with 6,986 residential and 725 business mailboxes. Open the EDDM route map.
Carrier routes in 08840
08840 has 18 USPS carrier routes (18 city (C)) with 6,986 residential and 725 business mailboxes. Routes range from 242 homes (C019) to 542 homes (C021); the median route has 382 homes. The Census counted 6,378 households in 08840 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.
| Homes per route | Routes |
|---|---|
| 1–249 | 1 |
| 250–499 | 15 |
| 500–749 | 2 |
| 750–999 | 0 |
| 1,000–1,499 | 0 |
| 1,500+ | 0 |
Best routes in 08840 for…
Most businesses
For B2B offers: office supplies, cleaning, IT, catering and commercial services.
- Route C008 — USPS business mailboxes 121, 303 homes
- Route C021 — USPS business mailboxes 120, 542 homes
- Route C011 — USPS business mailboxes 86, 439 homes
- Route C019 — USPS business mailboxes 86, 242 homes
- Route C017 — USPS business mailboxes 75, 461 homes
Select these 5 routes on the route map
Every carrier route in 08840
| Route | Type | Homes | Businesses | Est. median income | Est. owners | Est. families with kids | Est. moved in past year |
|---|---|---|---|---|---|---|---|
| C001 | City | 342 | 66 | $151,249 | — | — | — |
| C002 | City | 399 | 16 | $132,231 | — | — | — |
| C003 | City | 275 | 2 | $200,001+ | — | — | — |
| C004 | City | 333 | 0 | $132,231 | — | — | — |
| C005 | City | 433 | 16 | $112,784 | — | — | — |
| C007 | City | 441 | 1 | $112,784 | — | — | — |
| C008 | City | 303 | 121 | $187,833 | — | — | — |
| C009 | City | 497 | 57 | $187,833 | — | — | — |
| C010 | City | 408 | 35 | $151,249 | — | — | — |
| C011 | City | 439 | 86 | $115,272 | — | — | — |
| C013 | City | 337 | 4 | $200,001+ | — | — | — |
| C014 | City | 303 | 2 | $200,001+ | — | — | — |
| C015 | City | 359 | 1 | $108,798 | — | — | — |
| C016 | City | 365 | 1 | $118,074 | — | — | — |
| C017 | City | 461 | 75 | $151,249 | — | — | — |
| C018 | City | 507 | 36 | $132,228 | — | — | — |
| C019 | City | 242 | 86 | $200,001+ | — | — | — |
| C021 | City | 542 | 120 | $115,272 | — | — | — |
Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 08840 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
- 08837 — Fords CDP, NJ (2.1 mi)
- 08820 — South Plainfield borough, NJ (2.4 mi)
- 08863 — Fords CDP, NJ (2.5 mi)
- 08817 — Rutgers University-Livingston Campus CDP, NJ (2.7 mi)
- 08830 — Iselin CDP, NJ (2.9 mi)
- 08832 — Keasbey CDP, NJ (3.1 mi)
- 07080 — South Plainfield borough, NJ (3.6 mi)
- 07095 — Woodbridge CDP, NJ (3.8 mi)
Areas that include 08840
- Metuchen, NJ ZIP codes — 1 ZIP code
- Menlo Park Terrace, NJ ZIP codes — 1 ZIP code
- Middlesex County ZIP codes — 40 ZIP codes
- New Jersey ZIP code data
Where it ranks
- No. 5 of 39: highest median household income in Middlesex County
- No. 6 of 40: highest median home value in Middlesex County
- No. 10 of 40: highest share of owner-occupied homes in Middlesex County
- No. 12 of 40: highest share of households with children in Middlesex County
- No. 9 of 40: fastest population growth in Middlesex County
Mail every home in 08840
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) 08840, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.
Frequently asked questions
- What city is 08840 in?
- 08840 is a Metuchen, NJ mailing address. By land area, 89% lies inside Metuchen and 11% lies inside Menlo Park Terrace.
- What county is 08840 in?
- 08840 is in Middlesex County.
- What is the population of 08840?
- About 18,206 people (±344), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 17,841.
- What is the median household income in 08840?
- $146,635 (±$13,370), 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 08840?
- 18 USPS carrier routes with 6,986 residential and 725 business mailboxes (7,710 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
- What ZIP codes are near 08840?
- The closest, measured center to center: 08837 (2.1 mi, Fords), 08820 (2.4 mi, South Plainfield borough, NJ), 08863 (2.5 mi, Fords), 08817 (2.7 mi, Rutgers University-Livingston Campus), 08830 (2.9 mi, Iselin) and 08832 (3.1 mi, Keasbey).
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.