Hackettstown New Jersey ZIP Codes
Hackettstown holds a single ZIP code.
Every ZIP code in Hackettstown
| ZIP code | County |
|---|---|
| 07840 | Warren County |
We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP. USPS delivery-type products are licensed, and no clean-rights source maps ZIP codes to neighbourhoods — so the Hackettstown codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Hackettstown. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated . ZIP codes are delivery-route groupings, not areas; the boundaries implied by any ZIP map are approximations.
How these codes cluster
Every Hackettstown ZIP code begins 078. Those first three digits identify the sectional center facility that processes mail for this part of New Jersey. Statewide that range covers 56 ZIP codes, so Hackettstown accounts for 2% of it.
Every New Jersey ZIP prefix and the region it covers →
Area codes covering Hackettstown
ZIP codes and area codes are separate systems — one routes mail, the other routes calls — and they do not share boundaries. The code below serves the same ground Hackettstown occupies.
Hackettstown New Jersey area codes in full →
Where Hackettstown's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Hackettstown
| City | Distance | ZIP codes |
|---|---|---|
| Flanders New Jersey ZIP codes | 6.0 mi | 1 ZIP code |
| Netcong New Jersey ZIP codes | 7.2 mi | 1 ZIP code |
| Stanhope New Jersey ZIP codes | 7.6 mi | 1 ZIP code |
| Chester New Jersey ZIP codes | 8.3 mi | 1 ZIP code |
| Califon New Jersey ZIP codes | 9.3 mi | 1 ZIP code |
| Oxford New Jersey ZIP codes | 9.6 mi | 1 ZIP code |
| Andover New Jersey ZIP codes | 10 mi | 1 ZIP code |
| Washington New Jersey ZIP codes | 11 mi | 1 ZIP code |
Straight-line distance between place reference points, not driving distance.