Find the last 4 digits (ZIP+4) for an address in 07840

ZIP 07840, Hackettstown, NJ is filled in. Just type the street address.

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ZIP Code 07840 – Hackettstown, NJ

Hackettstown, New Jersey · Warren County · Eastern time

ZIP code07840
CityHackettstown
StateNew Jersey
CountyWarren CountyMorris County
Population32,105
Time zoneEastern · local time
ZIP typeStandard (has a Census ZCTA area)
Land area37.33 sq mi
Center (lat, long)40.8600, -74.8318

Area codes in this area

973862

These are the area codes that most often serve ZIP 07840 (including overlays). The exact area code depends on the phone number — landlines, mobiles and overlays can differ even on the same street.

Map

Nearby ZIP codes

07880 Vienna · 2.7 mi07870 Schooleys Mountain · 3.9 mi07828 Budd Lake · 4.3 mi07838 Great Meadows · 4.6 mi07820 Allamuchy · 5 mi07853 Long Valley · 5.6 mi07865 Port Murray · 5.7 mi07836 Flanders · 6.4 mi

About ZIP 07840

ZIP code 07840 is assigned to Hackettstown, New Jersey. It crosses 2 counties; most of its land is in Warren County. Its Census area covers about 37.33 square miles of land. The closest neighboring ZIP is 07880 (Vienna), about 2.7 miles away.

Every address in 07840 also has a 4-digit add-on code (ZIP+4) that points to a smaller delivery area. Use the box above to find it.

Sources: US Census Bureau (ZCTA, county relationship files), GeoNames (CC BY 4.0), NANPA via NumberResearch.org (CC BY 4.0). Map © OpenStreetMap contributors. ZIP areas are approximate. Population: U.S. Census Bureau, ACS 5-year estimates, 2024 (ZCTA). Data sources