Greenfield Ohio ZIP Codes
Greenfield holds a single ZIP code.
Every ZIP code in Greenfield
| ZIP code | County |
|---|---|
| 45123 | Highland 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Greenfield codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Greenfield. 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 Greenfield 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 Greenfield accounts for 2% of it.
Every Ohio ZIP prefix and the region it covers →
Area codes covering Greenfield
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 Greenfield occupies.
Greenfield Ohio area codes in full →
Where Greenfield's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Greenfield
| City | Distance | ZIP codes |
|---|---|---|
| South Salem Ohio ZIP codes | 4.5 mi | 1 ZIP code |
| Leesburg Ohio ZIP codes | 8.8 mi | 1 ZIP code |
| Highland Ohio ZIP codes | 11 mi | 1 ZIP code |
| Frankfort Ohio ZIP codes | 12 mi | 1 ZIP code |
| Washington Court House Ohio ZIP codes | 13 mi | 1 ZIP code |
| Hillsboro Ohio ZIP codes | 15 mi | 1 ZIP code |
| New Holland Ohio ZIP codes | 16 mi | 1 ZIP code |
| Sabina Ohio ZIP codes | 16 mi | 1 ZIP code |
Straight-line distance between place reference points, not driving distance.