Casstown Ohio ZIP Codes
Casstown holds a single ZIP code.
Every ZIP code in Casstown
| ZIP code | County |
|---|---|
| 45312 | Miami 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Casstown codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Casstown. 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 Casstown ZIP code begins 453. Those first three digits identify the sectional center facility that processes mail for this part of Ohio. Statewide that range covers 80 ZIP codes, so Casstown accounts for 1% of it.
Every Ohio ZIP prefix and the region it covers →
Area codes covering Casstown
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 Casstown occupies.
Casstown Ohio area codes in full →
Where Casstown's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Casstown
| City | Distance | ZIP codes |
|---|---|---|
| Troy Ohio ZIP codes | 5.0 mi | 2 ZIP codes |
| Christiansburg Ohio ZIP codes | 5.5 mi | 1 ZIP code |
| Fletcher Ohio ZIP codes | 6.2 mi | 1 ZIP code |
| Tipp City Ohio ZIP codes | 6.8 mi | 1 ZIP code |
| Piqua Ohio ZIP codes | 8.9 mi | 1 ZIP code |
| New Carlisle Ohio ZIP codes | 9.2 mi | 1 ZIP code |
| North Hampton Ohio ZIP codes | 11 mi | 1 ZIP code |
| Pleasant Hill Ohio ZIP codes | 12 mi | 1 ZIP code |
Straight-line distance between place reference points, not driving distance.