Port William Ohio ZIP Codes
Port William holds a single ZIP code.
Every ZIP code in Port William
| ZIP code | County |
|---|---|
| 45164 | Clinton 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Port William codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Port William. 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 Port William ZIP code begins 451. Those first three digits identify the sectional center facility that processes mail for this part of Ohio. Statewide that range covers 49 ZIP codes, so Port William accounts for 2% of it.
Every Ohio ZIP prefix and the region it covers →
Area codes covering Port William
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 Port William occupies.
Port William Ohio area codes in full →
Where Port William's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Port William
| City | Distance | ZIP codes |
|---|---|---|
| Bowersville Ohio ZIP codes | 3.9 mi | 1 ZIP code |
| Jamestown Ohio ZIP codes | 7.5 mi | 1 ZIP code |
| Wilmington Ohio ZIP codes | 8.6 mi | 1 ZIP code |
| Sabina Ohio ZIP codes | 9.1 mi | 1 ZIP code |
| Milledgeville Ohio ZIP codes | 11 mi | 1 ZIP code |
| Harveysburg Ohio ZIP codes | 11 mi | 1 ZIP code |
| Xenia Ohio ZIP codes | 12 mi | 1 ZIP code |
| Spring Valley Ohio ZIP codes | 13 mi | 1 ZIP code |
Straight-line distance between place reference points, not driving distance.