ZIP Code 08530 and Lambertville, NJ: Population, Cost of Living, and the City-vs-ZIP Boundary

The city of Lambertville has about 4,153 residents (Census Reporter, ACS 2024 5-year estimate). ZIP code 08530, which uses “Lambertville” as its mailing name, covers roughly 8,114 people (ZipDataMaps, 2022 estimate) because it also reaches into Stockton borough, West Amwell Township, Delaware Township, and part of Hopewell Township in neighboring Mercer County. Any number quoted for “Lambertville” population, income, or home values only means something once you know which of the two geographies it describes.
Guides and data sites quote population figures for this area that differ by roughly 2x, from about 4,150 to about 8,100. That is not an error on any one source. City-level pages report the city of Lambertville; ZIP-code data sites report the whole ZIP, five municipalities wide. The two are different footprints, not two competing counts of the same place.

What 08530 Actually Covers

Lambertville ZIP boundary map

Lambertville the city is 1.1 square miles (Census Reporter). ZIP 08530 covers closer to 29 square miles, spread across five municipalities and two counties (ZipDataMaps; the two-county split is independently confirmed by HomeTownLocator).

Municipality County Coverage in 08530
Lambertville (city) Hunterdon Anchor municipality; the ZIP’s post office and mailing name
Stockton (borough) Hunterdon Partial
West Amwell (township) Hunterdon Partial
Delaware (township) Hunterdon Partial
Hopewell (township) Mercer Partial; the only Mercer County piece of the ZIP

Five municipalities and two counties inside one ZIP boundary is the direct cause of the population and income gaps in the table below: a household in West Amwell or Hopewell Township carries a Lambertville, NJ 08530 mailing address without living inside the city limits at all.

Is Lambertville, NJ the same as ZIP code 08530?No. Lambertville city is one of five municipalities the ZIP reaches. An address with a Lambertville, NJ 08530 mailing name can sit in Stockton, West Amwell, Delaware, or Hopewell Township, which means two households with an identical city and ZIP on the envelope can pay taxes to different municipal governments.

Lambertville City vs. ZIP 08530, Side by Side

city vs ZIP data table

Geography Population Median household income Median home value Source and year
Lambertville city 4,153 $109,733 $562,300 Census Reporter / Data USA, ACS 2024 5-year
ZIP 08530 (whole) 8,114 $121,667 Not independently confirmed, see note ZipDataMaps (2022 pop.) / IncomeByZipCode, ACS 2023 5-year

The city is smaller, denser, and lower-income on this table than the ZIP as a whole, because the ZIP-wide figure folds in higher-earning pockets of West Amwell and Hopewell Townships. A reliable ZIP-wide median home value could not be traced to a government or primary source during this research pass, so that cell is left blank instead of filled with a number pulled from an unverifiable aggregator.

American Community Survey figures are five-year rolling estimates, not a single-year headcount, which is why a small geography like this one shows visible swings between vintages and between sources using different release years.

Which county is Lambertville, NJ in?Lambertville city and most of ZIP 08530 sit in Hunterdon County. The Hopewell Township slice of the ZIP is in Mercer County, so those residents answer to a different county government, court system, and property tax structure than the rest of the ZIP.

Cost of Living and Real Estate

Lambertville real estate

Median household income in Lambertville city was $109,733 in the 2024 ACS five-year estimate, with per capita income at $90,431 (Census Reporter). Homeownership stands at 78.3%, and the median property value was $562,300 (Data USA). Across the ZIP, 32.4% of households earn over $200,000 a year, and average household income reaches $181,633, well above the city-only figure, a gap that traces directly to the higher-income townships pulled into the ZIP boundary (IncomeByZipCode).

Is Lambertville, NJ expensive to live in?By city-limits numbers, yes: a $562,300 median home value against a $109,733 median household income is a heavier price-to-income ratio than most of Hunterdon County. The ZIP-wide median household income, $121,667, sits closer to what a buyer would need to qualify comfortably at that price.

Income and Employment

income employment data

Per capita income across the ZIP is $78,984, lower than the city’s $90,431 despite the ZIP’s higher household median. Larger average household size outside city limits accounts for most of that gap: more earners per household raises the household total even when each individual earns less.

Schools

South Hunterdon Regional School District

ZIP 08530 is served by the South Hunterdon Regional School District, which the New Jersey Department of Education lists as three schools with a combined enrollment of 760 (NJ Department of Education).

School Grades Location Enrollment
Lambertville Public School PreK to 6 Lambertville, NJ 08530 Part of 760 district total
West Amwell Township Elementary School K to 6 Lambertville, NJ 08530 Part of 760 district total
South Hunterdon Regional Middle/High School 7 to 12 Lambertville, NJ 08530 377 in grades 7 to 12 (NCES CCD, 2024-25)

The district draws from Lambertville city, Stockton borough, and West Amwell Township, not from the Hopewell Township or Delaware Township edges of the ZIP, which is a separate practical detail from the postal boundary above: a family moving to a 08530 address in Hopewell Township would not automatically enroll in this district.

What school district serves Lambertville, NJ?The South Hunterdon Regional School District, drawing from Lambertville city, Stockton, and West Amwell Township specifically, with 760 students across three schools as of the current NJ DOE district profile.

Safety

Lambertville crime statistics

Lambertville recorded zero violent crimes and 20 property crimes in the FBI’s 2023 Uniform Crime Report, released in September 2024: a property crime rate of 479 per 100,000 residents, 75.5% below the national average (reported via AreaVibes, sourced to FBI UCR data). A town this size can see that rate move sharply from one reporting year to the next on a handful of incidents, so a single year’s zero-violent-crime count describes 2023 specifically.

Is Lambertville, NJ safe?The FBI’s most recent Uniform Crime Report, for 2023, recorded zero violent crimes and 20 property crimes in Lambertville. Checking the current-year figure when it publishes each fall gives a fuller picture than any single year alone.

Getting Around

Lambertville commute data

Average commute time for Lambertville city residents is 30.6 minutes, and most drive alone to work (Data USA). Two figures planned for this section, the ZIP’s exact work-from-home percentage and USPS’s list of acceptable versus unacceptable mailing names for 08530, could not be traced to a verifiable government source in this research pass; treat any number you see quoted for either elsewhere with caution until it can be confirmed directly against usps.com or the Census Bureau’s commuting tables.

What It’s Actually Like

ShadFest Lambertville festival

ShadFest, Lambertville’s annual arts and food festival marking the shad’s spring run up the Delaware River, runs April 25 to 26, 2026, its 43rd year, 11am to 5pm both days, organized by the Greater Lambertville Chamber of Commerce (official ShadFest page; dates cross-confirmed by the city’s own events calendar).

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