Rio Grande Ohio ZIP Codes
Rio Grande holds a single ZIP code.
Every ZIP code in Rio Grande
| ZIP code | County |
|---|---|
| 45674 | Gallia 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Rio Grande codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Rio Grande. 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 Rio Grande ZIP code begins 456. Those first three digits identify the sectional center facility that processes mail for this part of Ohio. Statewide that range covers 69 ZIP codes, so Rio Grande accounts for 1% of it.
Every Ohio ZIP prefix and the region it covers →
Area codes covering Rio Grande
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 Rio Grande occupies.
Rio Grande Ohio area codes in full →
Where Rio Grande's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Rio Grande
| City | Distance | ZIP codes |
|---|---|---|
| Vinton Ohio ZIP codes | 7.4 mi | 1 ZIP code |
| Oak Hill Ohio ZIP codes | 10 mi | 1 ZIP code |
| Gallipolis Ohio ZIP codes | 11 mi | 1 ZIP code |
| Wilkesville Ohio ZIP codes | 14 mi | 1 ZIP code |
| Cheshire Ohio ZIP codes | 15 mi | 1 ZIP code |
| Rutland Ohio ZIP codes | 18 mi | 1 ZIP code |
| Jackson Ohio ZIP codes | 18 mi | 1 ZIP code |
| Wellston Ohio ZIP codes | 19 mi | 1 ZIP code |
Straight-line distance between place reference points, not driving distance.