Union Township is a township in Hunterdon County, New Jersey, home to about 6,430 people across 19 square miles. Its ZIP code is 08827, and parts of 08802, 08809 and 08867 are in Union Township too.
Homes sold for a median of $270 per square foot in the three months ending August 2026, a seller’s market.
Mostly Union Township; also Bethlehem and Hampton Borough
Mostly Bethlehem; part is in Union Township
Mostly Clinton Town; part is in Union Township
Mostly Franklin Township (Hunterdon County); part is in Union Township
Each card is that ZIP code’s whole market, including any part outside Union Township. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Union Township’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Newark Liberty International Airport (EWR)42 miles away |
|---|---|
| Closer regional airport | Lehigh Valley International Airport (ABE)25 miles away |
| Nearest city of 250,000+ | Newark, NJ42 miles away |
| Nearest city of 1 million+ | Philadelphia, PA45 miles away |
Straight-line distances from the center of Union Township; driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
Union Township had 6,507 residents in the 2020 census, up 6% since 2000.
It’s the 331st largest of 565 towns in New Jersey by population.
Hunterdon County grew from 34,507 residents in 1900 to 128,947 in 2020.
Hunterdon County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 86°F in summer, and winter lows average 21°F. About 50.9 inches of rain and melted snow fall in a typical year, with about 27 inches of snow.
Source: NOAA 1991–2020 climate normals, Flemington 5 Nnw, NJ weather station (7 miles away).
45,700 jobs at 3,672 businesses in Hunterdon County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
37 doctors and other health care providers list an office in Union Township.
Nearest hospitals
Providers with an office here
| Primary care doctors | 10 |
|---|---|
| Specialist doctors | 2 |
| Dentists | 1 |
| Nurse practitioners and physician assistants | 7 |
| Mental health providers | 16 |
| Physical and occupational therapists | 1 |
| Pharmacies | 1 |
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances; providers from the CMS National Plan and Provider Enumeration System (NPPES), by practice address and primary specialty.
Parks (1 nearby)
Grocery stores (1 nearby)
Pharmacies (1 nearby)
Libraries (1 nearby)
Museums
Counts are within about 3 miles of the center of town.
Source: Map data © OpenStreetMap contributors (openstreetmap.org/copyright), as mapped by volunteers; it can miss places or include closed ones.
Established in 1853.
Source: Wikidata (wikidata.org), the free knowledge base; people are listed by place of birth.
Public schools here are run by Hampton Borough School District, Union Township School District. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Hampton Borough SchoolHampton | Pre-K–5 | 113 | Public | 3.6 mi |
| Union Township Elementary SchoolHampton | Pre-K–3 | 259 | Public | 1.9 mi |
| Union Township Middle SchoolHampton | 4–8 | 246 | Public | 1.7 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools. Listed by address; we don’t rate schools.
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Shares ZIP codes with Clinton Town, Bethlehem, Franklin Township (Hunterdon County), Alexandria, Franklin Township (Warren County), Hampton Borough, Clinton Township, Washington Township (Warren County), Raritan Township and Lebanon Township.
Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.