08530 ZIP Code, Lambertville, NJ
08530 is a ZIP code in Lambertville, New Jersey — mostly in Hunterdon County (81% of its land), with smaller parts in Mercer County. It covers 27 square miles of land. The closest ZIP codes are 08560, 18938 and 08559. 8,119 people live here in 3,596 households. With about 299 people per square mile it is lightly settled, and most homes are owner-occupied (81%). Median household income is $120,467, above the New Jersey median of $103,556; the median age is 53.3, older than most ZIP codes.
Quick facts
- Mailing city: Lambertville, NJ
- County: Hunterdon County
- Land area: 27 sq mi
- Population: 8,119
- Median household income: $120,467
- Carrier routes: 8 (3,487 homes)
Key figures
| Measure | Value |
|---|---|
| Residents | 8,119 |
| Households | 3,596 |
| Median household income | $120,467 |
| Income per person | $82,506 |
| Median age | 53.3 |
| Homeowners | 80.8% |
| Median home value | $574,800 |
| Median rent | $1,776 |
| Bachelor's degree or higher | 59.4% |
| Average commute (minutes) | 28.8 |
| Households with kids under 18 | 15.2% |
| Moved in the past year | 19.0% |
| Below the poverty line | 2.7% |
| Broadband internet | 95.3% |
| Speak a non-English language at home | 9.9% |
Household income
| % of households | Value |
|---|---|
| <$10K | 1.3% |
| $10–15K | 1.4% |
| $15–25K | 2.9% |
| $25–35K | 7.6% |
| $35–50K | 8.6% |
| $50–75K | 9.8% |
| $75–100K | 9.6% |
| $100–150K | 15.4% |
| $150–200K | 11.0% |
| $200K+ | 32.3% |
Age
| % of all residents | Value |
|---|---|
| <10 | 6.6% |
| 10–19 | 7.0% |
| 20–24 | 5.2% |
| 25–34 | 7.9% |
| 35–44 | 11.6% |
| 45–54 | 14.8% |
| 55–64 | 22.0% |
| 65–74 | 15.2% |
| 75+ | 9.5% |
Tenure
| % of housing units | Value |
|---|---|
| Owned, with mortgage | 52.2% |
| Owned outright | 24.7% |
| Rented | 17.5% |
| Vacant | 5.5% |
Type of building
| % of housing units | Value |
|---|---|
| Detached house | 53.2% |
| Townhome | 28.5% |
| 2–4 units | 9.1% |
| 5–19 units | 3.9% |
| 20+ units | 4.6% |
| Mobile / other | 0.9% |
Businesses in 08530
252 business establishments with 2,004 employees (ZIP Codes Business Patterns 2023).
- Professional, Scientific, and Technical Services: 48
- Retail Trade: 33
- Accommodation and Food Services: 32
- Construction: 26
- Other Services (except Public Administration): 22
- Health Care and Social Assistance: 19
- Administrative and Support and Waste Management and Remediation Services: 12
- Finance and Insurance: 10
EDDM carrier routes
08530 has 8 USPS carrier routes with 3,487 residential and 383 business mailboxes. Open the EDDM route map.
Carrier routes in 08530
08530 has 8 USPS carrier routes (4 city (C), 4 rural (R)) with 3,487 residential and 383 business mailboxes. Routes range from 377 homes (R087) to 508 homes (C005); the median route has 433 homes. The Census counted 3,596 households in 08530 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.
| Homes per route | Routes |
|---|---|
| 1–249 | 0 |
| 250–499 | 7 |
| 500–749 | 1 |
| 750–999 | 0 |
| 1,000–1,499 | 0 |
| 1,500+ | 0 |
Best routes in 08530 for…
Most businesses
For B2B offers: office supplies, cleaning, IT, catering and commercial services.
- Route C002 — USPS business mailboxes 174, 486 homes
- Route C001 — USPS business mailboxes 63, 380 homes
- Route R087 — USPS business mailboxes 50, 377 homes
- Route C004 — USPS business mailboxes 45, 446 homes
- Route C005 — USPS business mailboxes 29, 508 homes
Select these 5 routes on the route map
Every carrier route in 08530
| Route | Type | Homes | Businesses | Est. median income | Est. owners | Est. families with kids | Est. moved in past year |
|---|---|---|---|---|---|---|---|
| C001 | City | 380 | 63 | $116,092 | — | — | — |
| C002 | City | 486 | 174 | $116,092 | — | — | — |
| C004 | City | 446 | 45 | $176,560 | — | — | — |
| C005 | City | 508 | 29 | $176,560 | — | — | — |
| R086 | Rural | 420 | 4 | $146,183 | — | — | — |
| R087 | Rural | 377 | 50 | $105,101 | — | — | — |
| R088 | Rural | 407 | 8 | $165,358 | — | — | — |
| R089 | Rural | 463 | 10 | $165,358 | — | — | — |
Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 08530 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
- 08560 — Titusville CDP, NJ (4.7 mi)
- 18938 — New Hope borough, PA (4.8 mi)
- 08559 — Stockton borough, NJ (6.1 mi)
- 18977 (6.2 mi)
- 08551 — Ringoes CDP, NJ (6.6 mi)
- 08534 — Pennington borough, NJ (6.8 mi)
- 08525 — Hopewell borough, NJ (7.1 mi)
- 18933 (7.2 mi)
Areas that include 08530
- Lambertville, NJ ZIP codes — 1 ZIP code
- Hunterdon County ZIP codes — 24 ZIP codes
- Mercer County ZIP codes — 23 ZIP codes
- New Jersey ZIP code data
Where it ranks
- No. 6 of 22: highest median home value in Hunterdon County
- No. 1 of 22: highest share of residents who moved in during the past year in Hunterdon County
- No. 2 of 22: highest median age in Hunterdon County
Mail every home in 08530
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) 08530, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.
Frequently asked questions
- What city is 08530 in?
- 08530 is a Lambertville, NJ mailing address. By land area, 4% lies inside Lambertville; the rest is outside any Census-defined city or community.
- What county is 08530 in?
- 08530 is mostly in Hunterdon County (81% of its land), with smaller parts in Mercer County.
- What is the population of 08530?
- About 8,119 people (±262), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 7,832.
- What is the median household income in 08530?
- $120,467 (±$19,468), 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 08530?
- 8 USPS carrier routes with 3,487 residential and 383 business mailboxes (3,871 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
- What ZIP codes are near 08530?
- The closest, measured center to center: 08560 (4.7 mi, Titusville), 18938 (4.8 mi, New Hope borough, PA), 08559 (6.1 mi, Stockton borough, NJ), 18977 (6.2 mi), 08551 (6.6 mi, Ringoes) and 08534 (6.8 mi, Pennington borough, NJ).
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.