Hardin Kentucky ZIP Codes
Hardin holds a single ZIP code.
Every ZIP code in Hardin
| ZIP code | County |
|---|---|
| 42048 | Marshall 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Hardin codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Hardin. 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 Hardin ZIP code begins 420. Those first three digits identify the sectional center facility that processes mail for this part of Kentucky. Statewide that range covers 52 ZIP codes, so Hardin accounts for 2% of it.
Every Kentucky ZIP prefix and the region it covers →
Area codes covering Hardin
ZIP codes and area codes are separate systems — one routes mail, the other routes calls — and they do not share boundaries. The codes below serve the same ground Hardin occupies.
Hardin Kentucky area codes in full →
Where Hardin's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Hardin
| City | Distance | ZIP codes |
|---|---|---|
| Benton Kentucky ZIP codes | 6.6 mi | 1 ZIP code |
| Murray Kentucky ZIP codes | 11 mi | 1 ZIP code |
| Grand Rivers Kentucky ZIP codes | 17 mi | 1 ZIP code |
| Hazel Kentucky ZIP codes | 18 mi | 1 ZIP code |
| Mayfield Kentucky ZIP codes | 19 mi | 1 ZIP code |
| Calvert City Kentucky ZIP codes | 20 mi | 1 ZIP code |
| Kuttawa Kentucky ZIP codes | 23 mi | 1 ZIP code |
| Eddyville Kentucky ZIP codes | 25 mi | 1 ZIP code |
Straight-line distance between place reference points, not driving distance.