Wilmington Ohio ZIP Codes
Wilmington holds a single ZIP code.
Every ZIP code in Wilmington
| ZIP code | County |
|---|---|
| 45177 | 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Wilmington codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Wilmington. 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 Wilmington 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 Wilmington accounts for 2% of it.
Every Ohio ZIP prefix and the region it covers →
Area codes covering Wilmington
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 Wilmington occupies.
Wilmington Ohio area codes in full →
Where Wilmington's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Wilmington
| City | Distance | ZIP codes |
|---|---|---|
| Martinsville Ohio ZIP codes | 7.3 mi | 1 ZIP code |
| Port William Ohio ZIP codes | 8.6 mi | 1 ZIP code |
| Clarksville Ohio ZIP codes | 9.4 mi | 1 ZIP code |
| New Vienna Ohio ZIP codes | 9.7 mi | 1 ZIP code |
| Midland Ohio ZIP codes | 9.8 mi | 1 ZIP code |
| Sabina Ohio ZIP codes | 11 mi | 1 ZIP code |
| Harveysburg Ohio ZIP codes | 11 mi | 1 ZIP code |
| Bowersville Ohio ZIP codes | 12 mi | 1 ZIP code |
Straight-line distance between place reference points, not driving distance.