Princeton Kentucky ZIP Codes
Princeton holds a single ZIP code.
Every ZIP code in Princeton
| ZIP code | County |
|---|---|
| 42445 | Caldwell 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Princeton codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Princeton. 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 Princeton ZIP code begins 424. Those first three digits identify the sectional center facility that processes mail for this part of Kentucky. Statewide that range covers 32 ZIP codes, so Princeton accounts for 3% of it.
Every Kentucky ZIP prefix and the region it covers →
Area codes covering Princeton
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 Princeton occupies.
Princeton Kentucky area codes in full →
Where Princeton's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Princeton
| City | Distance | ZIP codes |
|---|---|---|
| Eddyville Kentucky ZIP codes | 11 mi | 1 ZIP code |
| Dawson Springs Kentucky ZIP codes | 12 mi | 1 ZIP code |
| Fredonia Kentucky ZIP codes | 12 mi | 1 ZIP code |
| Kuttawa Kentucky ZIP codes | 13 mi | 1 ZIP code |
| Cadiz Kentucky ZIP codes | 17 mi | 1 ZIP code |
| Marion Kentucky ZIP codes | 19 mi | 1 ZIP code |
| Grand Rivers Kentucky ZIP codes | 20 mi | 1 ZIP code |
| Providence Kentucky ZIP codes | 22 mi | 1 ZIP code |
Straight-line distance between place reference points, not driving distance.