Zip Code Database List
Account Login
Find ZIP+4 of Address

Find the ZIP Code, County, and +4 of any U.S. Address

FREE ZIP Code Finder

Find info on any U.S. ZIP Code

Other FREE Lookups

Lookup ZIP Code of any City, State, County or Area Code

FREE Radius Search

Find all ZIP Codes

FREE Distance Calc

Calculate the distance between two U.S. or Canadian ZIP codes.

ZIP Code Database - Facts & Stats

Data Last Updated: June 1, 2023

ZIP Codes for City of Hackettstown, NJ

Need a ZIP Code for Hackettstown, NJ? Please enter an address.

Counties:WARREN, NJ
Area Code(s):908
Timezone(s):Eastern (GMT -05:00)
City Population:9,724 (More Details)
CBSA:Allentown-Bethlehem-Easton, PA-NJ
Congressional District(s):07
Land Area:357 square miles (county)
Water Area:6 square miles (county)

1 ZIP Code

Hackettstown, NJ ZIP Code Boundaries

Download ZIP Code Database

Hackettstown, NJ Covers 1 ZIP Code

ZIP CodeTypePopulation% of PopulationAliases
07840Standard29,849100.00%ALLAMUCHY TWP

Hackettstown, NJ Demographic Information *

Total population**9,724
Male population4,653
Female population5,071
Median age (years)37.3
White Population8,273
Black Population239
Indian Population23
Asian Population483
Hawaiian Population5
Hispanic Population1,474
Median age (Male)36.4
Median age (Female)38.3
Total households3,575
Family households (families)2,255
Average household size2.48
Average family size3.09
Total housing units3,755
* Demographic data is based on 2010 Census for the City of HACKETTSTOWN.
** City and ZIP Code Population will not be equal due to differences in their geographies.


  1. U.S. Postal Service [Last Updated: 2/1/2023],
  2. Internal Data Creation [Last Updated: 2/1/2023],
  3. U.S. Geological Survey [Updated as needed],
  4. U.S. Census [Updated Yearly],
  5. U.S. Census 2010 [Decennial] [Last Updated: 1/1/2010],