New Castle Kentucky ZIP Codes
New Castle holds a single ZIP code.
Every ZIP code in New Castle
| ZIP code | County |
|---|---|
| 40050 | Henry 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 New Castle codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for New Castle. 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 New Castle ZIP code begins 400. Those first three digits identify the sectional center facility that processes mail for this part of Kentucky. Statewide that range covers 54 ZIP codes, so New Castle accounts for 2% of it.
Every Kentucky ZIP prefix and the region it covers →
Area codes covering New Castle
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 New Castle occupies.
New Castle Kentucky area codes in full →
Where New Castle's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near New Castle
| City | Distance | ZIP codes |
|---|---|---|
| Eminence Kentucky ZIP codes | 4.8 mi | 1 ZIP code |
| Smithfield Kentucky ZIP codes | 5.7 mi | 1 ZIP code |
| Pleasureville Kentucky ZIP codes | 6.5 mi | 1 ZIP code |
| Campbellsburg Kentucky ZIP codes | 6.5 mi | 1 ZIP code |
| La Grange Kentucky ZIP codes | 12 mi | 2 ZIP codes |
| Worthville Kentucky ZIP codes | 13 mi | 1 ZIP code |
| Bedford Kentucky ZIP codes | 14 mi | 1 ZIP code |
| Shelbyville Kentucky ZIP codes | 16 mi | 2 ZIP codes |
Straight-line distance between place reference points, not driving distance.